Saturday, April 30, 2011

Peter Gleick Responds

Peter Gleick has graciously sent me for posting a response to my critique of his Huffington Post column.  Here is Peter's response, and below that you will find my rejoinder.  Thanks Peter!
My opening paragraph is not claiming attribution, but that the extreme events of the past week must remind us that the climate is worsening. I think that is undeniable. But moreover, the difficulty in attribution is not the same as proof there is no connection. Indeed, I think it likely that every single climatic event we see today is, to some growing but unquantified degree, influenced by the changing climate -- this is the classic attribution problem. Just as you might (and indeed I might) reject any definitive statement about attributing an effect of climate change on these recent events, I (and I would hope YOU) would reject any definitive statement claiming there is NO effect. As the good NY Times piece on this pointed out, we don't know enough about the dynamics, and the model resolutions are not fine enough to test.

My comment about deaths and destruction was not specific to tornadoes, but to climatic extremes overall, globally. Read the whole piece carefully. And it refers to what I believe is an inevitable growing (not declining) risk from these climatic extremes, which include floods, droughts, sea level rise, hurricanes, etc.

Here is a good example of the misrepresentations of deniers like Morano (in which camp I do NOT put you, of course): We see strawman arguments making fun of any reference to tsunamis, as though any climate scientist argues a connection between climate change and frequency of tsunamis. But there IS a connection: not of attribution, but of consequences. Deniers conveniently (for them if not for society) ignore the consequences of two similar-sized 20-foot tsunamis (for example), but one with a foot-higher sea level, hitting a 20.5 foot tsunami wall. In the first case, nothing; in the second case, disaster. That's the reality of future climate change and the important distinction related to threshhold events.

But I was also shocked at what I consider a gross misuse by you of the tornado death graphic at the very top of your blog, as though that graph was relevant to climatic trends. The historical number of deaths reflects not just tornado frequency and intensity, but location, population dynamics and trends, advanced early warning technology and experience, housing construction trends, and many other factors completely unrelated to climate. It is perfectly plausible to have a clear worsening climate signal and a trend of deaths going in the other direction. Your use of the graph was inappropriate and unsupportable, though it has certainly been adopted by the denier community.

[Finally, for the inevitable complaint about my use of the term "denier," I use it for those who use it to describe themselves, and if you want plenty of examples, I've got them.]
Pielke's rejoinder:
Thanks, Peter.  Here are a few reactions to your response.

1. You seem to want things both ways. You write that the tornadoes this week are a "reminder" that "our climate is worsening" which will lead to more "death, injury, and destruction."  Now you say that you are "not claiming attribution" but then maintain that "every single event" is influenced by climate change. I am sure that I am not alone in reading your commentary as making an explicit link between this week's tornadoes and human-caused climate change.

2. If you invoke tornadoes and climate change in the immediate aftermath of >300 deaths writing "we're affecting the climate; in turn, that will affect the weather; and that, in turn, will affect humans: with death, injury, and destruction" then you should expect people to interpret your post exactly as I have. A broader focus on deaths from extreme weather events around the world also has no scientific basis at this time for asserting a connection to human-caused climate change in any of these phenomena (e.g., PDF).  If you really want to defeat "the deniers" then my advice is to refrain from giving them such easy targets to shoot down.

3. At no point did I suggest or imply that a graph of loss of life from tornadoes can be used to say anything about human-caused climate change, much less "deny" it. If you are familiar with my work at all (and I assume that you are) then you will know that I have repeatedly argued that you cannot use trends in loss of life (much less the loss of life in one day) to say anything about climate trends or causality of those trends, as you do in your piece.  If you want to say something about climate trends, then look first at climate data and not messy impact data -- and here is what NOAA/NCDC says about trends in the strongest tornadoes that cause >70% of deaths in the US.
Of course we need to be careful interpreting such trends because tornado data is problematic for various reasons, which makes it very difficult to argue that human-caused climate change is making tornadoes worse. Remember that the IPCC defines climate change as a change in the statistics of weather over 30-50 years and longer. For extremes, rare by definition, such trend detection will all but certainly require much longer time periods.

I appreciate your engagement.

Cutting-Edge Therapies for Autism & Point to Happy: a book for kids on the autism spectrum

© Flickr User BLW Photography
Today concluded Autism Awareness Month (and April) and I wanted to squeeze in these two books that I only recently was sent. I have always been interested in Autism, although I'm not sure exactly why. None of my family or friends are autistic or have autistic children. I have met autistic children but my interest is from when I was a teenager, before I ever met an autistic child.

Perhaps it's the fact that there are so many ideas about it's cause and how to treat it. I find it intriguing that something can affect so many children without us having a better idea of it's cause. I've read books on Autism and articles and even did research on my own as a teenager. I don't spend time researching it anymore but if I come across a mention of something on autism, I will read it. So as such I've heard of many different therapies for autism.

Cutting-Edge Therapies for Autism 2011-2012 by Ken Siri and Tony Lyons (Stars: *****) has the most comprehensive list of therapy ideas for autism I've ever seen and it will be updated every year in April. This is the second edition so far and it already has 25 more chapters than last year, plus other updates. If you are familiar with autism therapies a bit, you may have heard of ABA (Applied Behaviour Analysis), music therapy, occupational therapy and psychotropic medications. However have you heard of Craniosacral and Chiropractic therapy, Melatonin Therapy for sleep problems or Technological-Based Interventions for Autism - There's an app for that!

Also included is a list of organizations and schools for kids on the autism spectrum, but it's mostly American since that's where the book was published. There are some international organizations and five Canadian schools listed though.

Point to Happy: a book for kids on the autism spectrum by Miriam Smith and Afton Fraser (Stars: ****) is a book to encourage communication skills and provide visual support in autistic children. With beautiful photographs by Margo Smithwick and an attached pointer, the parent can read the words and the child can attempt to point to the answer.
e.g. The boy is happy. Point to happy. The boy is sad. Point to sad. 

There is a place to add a picture of your child's favourite food to the foods page and a whole section for you to add photos of four people important to the child and their names. I don't work with autistic children but I can imagine it would work well.

*I was sent these books in the hopes that I'd review or mention them. No monetary compensation was provided. All opinions are honest and are not affected by how I acquired the item.

For doctors: How to start using social media

How to start

My advice for doctors who are interested in starting using social media for professional purposes is simple:

- Start on Twitter, expand to a blog as natural progression.
- Input your blog posts automatically to a Facebook like/fan page.
- Listen to the leading physicians, nurses and patients' voices on Twitter, and reply.
- Comment on blogs.
- Do not be afraid to share your expertise.
- Comply with HIPAA and common sense.

I posted this on Twitter yesterday: Doctors, when you don't have time to write a blog post, record a video - the orthopedic surgeon @hjluks shows how it's done: http://goo.gl/jL73J


Howard J. Luks, MD

@Doctor_V (Bryan Vartabedian) said, "My blog is my home. Twitter and Facebook are outposts."

I actually disagree a bit. My use of Twitter goes beyond a simple outpost. It's my digital notebook and idea feedback system.

The circle of online information for me is as follows: Google Reader -> Share on Twitter -> Get feedback -> Write a blog post -> Share via RSS and Twitter -> Get feedback, go on.


The circle of online information (full version) (click to enlarge).

Substance over style

Going back to the video embedded above, I think that @hjluks is the current leader in creating original, honest, tell-it-like-it-is clinical content among physicians. This is an example to follow. The technical execution does not have to be perfect, as you will see from the discussion started on Twitter and summarized below. However, the content must be factually correct and professional.

@yayayarndiva (P. Mimi Poinsett MD) had a few comments about the technical aspects of the video such as "if you are going to do a video - make your background a tad less busy:)"

I actually liked the background - it's "authentic" and gives you something to look at during the 8-minute video.

@hjluks actually polled 100 patients on that. They like the laid back office view.

@yayayarndiva P. (Mimi Poinsett MD) thought that "authentically messy AND 8 min video with a head in bouncing chair - think I would rather read the transcript... I think docs like everyone else can sharpen their presentation skills with video... still good to continue. Video? A talking head doesn't confer authenticity- just a new toy:)... Or you could use Dragon software and dictate your post..."

@ePatientDave (Dave deBronkart) convinced @hjluks to do the transcripts, primarily for Google. "Otherwise, thy pearls of light are hidden under a YouTube bushel. I emphasize it's not just *marketing* SEO - it's for being findable for those in need", said @ePatientDave.

I agree. You need the transcript for SEO and quick info. SEO doesn't just apply to marketing - it's a way for people (real humans) to find you online.

Nothing beats video for authenticity though. I understand the concept of creating technically flawless presentations but if you wait to do a perfect video and you are a busy doctor, you may never do it. The same applies to blog posts - if you are going to write a blog post for 2 months, write a journal article instead.

I had some final encouragement for @hjluks: "You don't have to be pro with video. You are pro as orthopod - who uses video."

I think he liked that.

Do you need a social media policy for your medical practice?

Another good discussion point was brought up by an office manager of a pediatric group in Chicago: Do you need a social media policy for your medical practice? http://goo.gl/7APvI - I think you do.

John Sharp and I worked on a social media policy for Cleveland Clinic back in 2005 when all that was a big unknown in healthcare. It still is for many organizations - in terms of professional involvement and outreach. A social media policy provides some much needed guidance and boundaries.

The number one rule is very simple: comply with HIPAA and do not share any of the 18 identifiers: http://goo.gl/WR5MR

Top Twitter Doctors

This is a list of the Top Twitter Doctors arranged by specialty in alphabetical order - feel free to add your own suggestions. The list is open to anybody to edit:


Comments from Twitter and Facebook:

Bryan Vartabedian: "When I present this stuff I recommend doctors find 2-3 role models in their specialty and follow them. Watch and study how they do things. Great place to start."

Are extra tornadoes caused by CO2?

The planet is going to die. The only thing that the global warming cultists are uncertain about is what kind of death it will choose.



The Capitol of a state filled with climate change deniers is being tested by a man-made tornado resembling a nuclear mushroom. (At least that's what the jihadists want the caption to be.)

In 2005, they would tell us that every season would bring its ever increasing number of hurricanes. The number of Katrinas would skyrocket and they would eventually kill everyone. However, a sequence of average and below-the-average hurricane seasons has led the climate cultists to change their preferred doomsday scenario dozens of times in recent years. One could say that every time the weather changed, their holy scripture was rewritten, too.

So during the years, we have "learned" that global climate change will destroy us via hurricanes, snowstorms in New York, floods in Pakistan, heat waves in Russia, maybe even earthquakes in Japan and I could go on and on and on. Right now, the face of the climate god - also known as a rare weather event - are tornadoes in Alabama. ;-)

While most scientists silently acknowledge that there's no link between these twisters and "global climate change" (silently so that their funding is not affected), it is not just infamous unhinged activists who are promoting this link. Kevin Trenberth at Think Progress thinks it is "irresponsible not to mention climate change in the context of the tornadoes". Wow. See 100+ other fresh articles discussing the AGW-tornado link.

Yesterday, Marc Morano has nicely presented this changing perspective about the kind of skyrocketing deadly events on Fox News:



Very true. The climate bigots' belief is meant to be strengthened every time the weather changes. Because the weather has been changing all the time for 4.7 billion years and it is meticulously continuing to do so, it's not surprising that the fanaticism of the climate cultists has already surpassed that of many Muslims.




One year ago, Roy Spencer released his new book, The Great Global Warming Blunder, in which he argued that the influence of the natural cloud cover variations on the temperature has been misinterpreted as the opposite influence and, therefore, a positive feedback. That has greatly and spuriously inflated the predicted sensitivity of the climate to carbon dioxide and similar drivers.

One year later, i.e. two days ago, Real climate has reviewed the book. It's strange to post reviews of a book on an "urgent problem" one year after the book is published, isn't it?

The review is plagued by internal inconsistencies. For example, its author boasts that climate models were "able" to predict a high climate sensitivity even without positive feedbacks. That's too bad because we now know that the no-feedback sensitivity is 1.2 °C per CO2 doubling and the discrepancy only shows that the climate modelers have been cheating and inflating their predictions well before the complexities of the H2O cycle were incorporated into the models.

We may argue that because of the timing, the review of the book is off-topic. But Gavin Schmidt added two remarkably off-topic observations to the thread - tornadoes and Roy Spencer's location.
Coincidentally, Roy Spencer is in the middle of the tornado outbreak that has hit Alabama. Obviously, we hope that he and everyone else affected stay safe.
Well, it would be terrible if the tornadoes badly affected Roy Spencer but the probability is still small. There are 5 million people in Alabama and 250 causalties. So the risk that a given random person is among them is still just 1 in 20,000.

Now, try to explain the relevance of this comment by Schmidt. Why is it a "coincidence" if Schmidt combines several things that have nothing to do with each other? Most n-tuples of things have nothing to do with each other so it is no "coincidence". The only reason why Schmidt may consider it a "coincidence" is that he suggests that there is a relationship between global climate change and the tornadoes. And the only reason why Roy Spencer's location is relevant - another part of the "coincidence" - is that Schmidt suggests that there is a relationship between Roy Spencer and the punishment by Mother Nature if not Gaia. Schmidt doesn't write those things explicitly but much like in the Bible, he surely wants the believers to turn on their imagination and figure out that this is what he wanted to say. And many of them will do so.

Some skeptics don't even want to believe that this is Schmidt's point. Think twice. In the Think Progress article mentioned above, they don't forget to mention that "The Congressional delegations of these states (Alabama, Mississippi, Tennessee, Georgia, Kentucky, Virginia) overwhelmingly voted (HR 910 and McConnell Amendment 183) to reject the science that polluting the climate is dangerous." It's just like when we talk about the Gore effect - the only difference is that we're making fun about innocent cases of cold weather while these people are dead serious and they effectively attribute hundreds of dead people to the skeptics. Those people don't have any morality.

Meanwhile, Roy Spencer is inside the tornado outbreak area, indeed. Before the end of the world which also led to blackouts, he had some charge in the batteries - for 40 minutes - so we could hear quite a lot from him:
Tornado update from Alabama 1
Tornado update from Alabama 2

More tornadoes from global warming. That's a joke, right?
In the first entries, he is happy e.g. about the disappearing light pollution. The hospitable Southerners may finally see lots of stars on the skies! ;-)

Of course, the last entry is most relevant for the discussion of the new face of the global warming Armageddon that is being furiously promoted among the cultists. Spencer explains the real drivers that make tornadoes in the U.S. possible: wind shear, a few others, and an anomalously cold spring.

Much more generally, it's clear that similar events are extremely localized and depend on local non-uniformities while global climate change is, by definition, well, global. It really means that it's largely uniform - much like the concentration of CO2 after a few weeks of diffusion. A uniform change of the broader environment may still affect the frequency and intensity of local non-uniformities. However, Spencer explains that the (weak) influence is really going in the opposite direction than the new Armageddon meme tries to claim - something that is taking place in the case of other "threats", too. Quite generally, global warming may be predicted to reduce the non-uniformities and, therefore, the amount of variability and the frequency of extreme events.

What do the empirical data tell us about these matters?



This is a graph of tornado reports between 1950 and 2006 taken from Andrew Revkin's 2008 blog entry. Revkin copies a caption by NOAA/NSSL:
Frequency of reports of strong (red) and weak (blue) tornadoes since 1950. Experts say the rise in weak tornadoes is from more reporting, not more storms.
You can see that the large tornadoes - which were probably (almost) universally reported even around 1950 - are actually dropping a little bit (red color). On the other hand, the smallest tornadoes (blue color) have gone up which is almost certainly due to the people's increasing ability to report them. It makes sense; there surely had to exist limitations in the citizens' ability and will to report small tornadoes around 1950. Still, we don't know what was the actual number of small tornadoes in 1950 so we can't make any definitive statements about the trends.

Whether or not a theory predicts an increase or a decrease of tornadoes or any other weather phenomenon, it's always useful to do the simplest thing you may think of: to try to check the experimental graphs showing the frequency that was measured in the reality. I think that a vast percentage of the people - including those who consider themselves "well-informed" in the climate change issues - are not doing this simple exercise.

So I would bet that a vast majority of the U.S. citizens is ready to believe that the number of strong tornadoes has been rapidly increasing in the last 60 years even though it has actually been decreasing. Even though many people often mention that the weather is not the climate, the reality is that the weather - and I only mean the weather "right now" (otherwise the climate can be fully extracted from the weather at a long enough time scale) - determines a vast majority of the actual sentiments about the climate.

That's too bad.

There are so many interesting weather events that some of them are guaranteed to be occurring pretty much at every moment of time somewhere. Because global communication has become trivial, we're instantly learning about any of them almost immediately. However, that doesn't mean that their number has been increasing. If one carefully tries to check whether something has been increasing, he will invariably find out that the increase was statistically indistinguishable from zero and the number of exceptions doesn't statistically differ from the number of exceptions that you would expect by chance, too.

The only major graph that shows an increase is the graph of the global mean temperature but this increase is totally unspectacular. Similarly, the number of "record high temperatures" is guaranteed to be increased relatively to "record low temperatures" because of the overall change. But the overall change is small for all practical purposes while all other wind-, humidity-, and pressure-related weather events depend on the local gradients and they have nothing to do with the overall global temperature changes. That's why the corresponding graphs don't show any statistically significant trends.

There is surely no threat - or "crisis" as some of the most outrageous crooks like to call it. There's just a lot of dirty propaganda. CO2 can at most contribute a uniform increase of the temperature by half a degree or a degree or two degrees a century. And such a uniform increase has almost no effect on any weather events that we care about because such events depend on local non-uniformities - sometimes on extremely large gradients of temperature, pressure, and humidity - that have really nothing to do with any global climate change, whether it is man-made or not.

Marc Morano rightfully says that the climate orthodoxy linking tornadoes and human sins against Nature is literally returning us (or some of us) to the era of medieval, pre-scientific superstitions in which witches were being burned because they were causing thunderstorms. It's really incredible if some people who actively help this irrationality to spread are talking about "science".

The actual lesson of all these weather events is that Nature harbors much greater energy than we do - and all these events show how irrelevant the energy flows induced or modified by us are irrelevant from the viewpoint of (or relatively to) the whole Earth. People should conclude that in the context of the natural phenomena, our influence on the climate is tiny. Too bad that some of them are led to make the exactly opposite and spectacularly wrong conclusion.

And that's the memo.



Wow, on Saturday, 1:30 pm, Gaia came to punish me, too. During a nice and sunny Spring day with the temperature near 17 °C, the skies suddenly went dark and lots of ice pellets began to drum on my windows. It has been intense for 15 minutes or so. I wasn't aware it was possible. Therefore it had to be caused by the evil industrial civilization, especially in capitalist countries.

By the way, more seriously, I think that such weather events are a significant negative feedback because they cool the surface - and heat the higher layers of the atmosphere. This combination means that they reduce the lapse rate and act against the "enhanced global warming" which is about the increase of the lapse rate.

BBC 1964: Feynman in Strangeness Minus Three

Steven Miller has sent me a cute 41-minute video:



Richard Feynman, in the BBC Horizon 1964 program called "Strangeness Minus Three", discusses the coming revolution in the understanding of nuclear physics.




Murray Gell-Mann and Yuval Ne'eman predicted a "strangeness=3" particle which had just been found; the quark picture was clearly useful for them. Feynman predicts some breakthroughs in our understanding of nuclear physics. QCD came a few years later.

Feynman discusses the SU(2) symmetry between protons and neutrons and many other features of nuclear physics that had been freshly known to exist at that time. He kindly credits Gell-Mann with the development of strangeness, a numerical quantification of the difficulty that a nuclear particle may have when it wants to decay to a neutron or a proton.

By watching this program, you would never agree that Feynman wasn't nice to Gell-Mann (and others). For example, he says that the search for the Omega minus particle (s=-3) was a typical example of a dramatic scientific investigation. Two ingenious men, Gell-Mann and Ne'eman, had to wait for two years to see whether Nature recognizes their ingenuity. She did. The particle was found. ;-)

Gell-Mann appears at 15:26. He predicts that he has a few more years to actively live; physicists lose flexibility at some point; he describes fiery discussions with Feynman, and so on. After 19:20, Yuval Ne'eman describes his exotic paths from military to science (via Imperial College). (Israeli soldier) Ne'eman has some lovely things to say about his key collaborator (and devout Muslim) Abdus Salam.

A Brookhaven experimenter who found the Omega minus speaks at 23:20. He had to prepare the experiment. Gell-Mann had a great track record of his predictions so it wasn't a problem. Graphs of the decuplet, mass differences, and decay channels are nicely sketched; it seems clear to me that these "technicalities" would be omitted in a 2011 BBC show which would be filmed for a much more dumbed down audience. Finally, the experimenter shows some cutely visual bubble chamber images of their discovered Omega minus.

At 32:50, we get back to Feynman who is a kind of moderator of the show. He discusses how the scientific understanding develops in waves - using an example of periodic table and atomic physics - and meditates on whether or not partially broken symmetries are beautiful or deep. Great discoveries always require some philosophical surprises. Feynman also emphasizes that our (or his) age was exceptional because those things can't be discovered twice. Lots of cute and deep thought of Feynman about Nature and science.

Quite generally, I was impressed by the speaking abilities of all the physicists on the show. Maybe, and quite likely, they were reading some prepared texts. But maybe it is the right thing to do, anyway. It may have been a bad development that the TV shows began to prefer "authentic (disordered) interviews" with the physicists lately.

At the same moment, while the 1960s are often presented as a period of a bursting frenzy in experimental particle physics, I don't quite see it. For two years, people would be waiting for a mundane bound state of three strange quarks and they would dedicate a special BBC show to this single particle in the decuplet. I am absolutely certain that a possible discovery of the Higgs, or even supersymmetry, would make our era much more striking than the 1960s.

That's why I included a link to Lisa Randall's new book, Knocking on Heaven's Door. I happen to know the content in detail and it's excellent - covering quite some details of philosophy of science, particle physics, effective physics, model building, and the LHC. It will be released in September 2011 and you may pre-order it now.

Friday, April 29, 2011

Rainbow Times Two


Wish I could have captured the whole thing. A magnificent, bright rainbow. Times two.

John Baez, octonions, and string theory

John Baez has always been obsessed by octonions. He sees them everywhere. I love octonions but I realize that they don't play much role in most of physics - and not even in most of string theory.

In 2009, I wrote a related article
John Baez, M-theory, and spinors
Scientific American has just published a text by John Baez and his student John Huerta,
The Strangest Numbers in String Theory (demo; free version in 1 month)
The first fact I find utterly crazy is that two people who manifestly and demonstrably don't understand string theory - not even at the undergraduate level - are writing articles for widely read journals pretending to be scientific magazines with "string theory" playing the role of one half of the title. As I will argue, they are really abusing the stellar brand of string theory to promote their idiosyncratic bullshit.




The SciAm article is a simplified version of this more technical article
Division Algebras and Supersymmetry II by John Baez
posted at Jacques Distler's n-category and marijuana coffee shop. As sketched in my 2009 blog entry, Baez is obsessed by the observation that the classical string theories in D=3,4,6,10 - which use spinors with different reality and chirality projections - can be mapped to R,C,H,O, the four division algebras of dimensions 1,2,4,8.

In some sense, SL(2,O) may be interpreted as SO(9,1).

However, that's it. The actual structure of the octonions - their multiplication table whose characteristic automorphism group is G_2 - is not really used in SO(9,1) in a useful way. And if this table and the G_2 symmetry appears at a certain stage, it immediately disappears.

Moreover, the minimal superPoincaré algebras in 3,4,6,10 dimensions are far from being the only four superalgebras in their class. They're not even the most interesting or most symmetric ones. They're just algebras in four dimensionalities D such that D-2 - the number of physical polarizations of a gauge boson - is a power of two. It has to be a power of two in a minimal supersymmetric gauge theory because the number of bosonic polarizations has to match the number of fermionic polarizations and the latter come from a spinor; I don't need division algebras to prove that. Also, I don't need division algebras to prove that minimal super Yang-Mills theories can only exist in these four dimensions.

Also, the "other remarkable structures" that directly come from the R,C,H,O sequence are not that interesting. He also talks about membranes in 4,5,7,11 dimensions (not surprising that they have the same counting of physical degrees of freedom - it's just double dimensional reduction). Except for the last one, they're not terribly interesting theories or vacua. So the detailed data refute Baez's hypothesis; he clearly doesn't care. Also, the R,C,H,O argument doesn't really show why/that only the 10- or 11-dimensiona case is consistent at the quantum level (as a separate theory). This whole R,C,H,O perspective on the landscape of string/M-theory vacua is naive at the level of a kindergarten kid. You simply can't understand the secrets of string theory by learning the sequence 1,2,4,8.

In the slow comments under the 2009 blog entry, Robert Helling argued that there is a lot of interesting fog about the closure of the supersymmetry algebra etc. I find this whole approach to these issues irrational.

There's lots of fascinating, still poorly understood mysteries about string theory's internal mathematical consistency. But the topics that Baez, Huerta, Helling, and others are talking about are pretty much exactly those where the mystery has already been fully eliminated. The mysterious links to pure mathematics continue to exist but you must get much deeper to uncover them.

There are simple ways to prove that 3,4,6,10 are the relevant dimensionalities for the classical superstring - but only D=10 is the actual dimension that is allowed at the quantum level. However, counting of the dimensions is one of the most elementary facts about string theory. All the cancellations that Baez et al. hype can be easily proved - in many different ways, in fact. Joe Polchinski boasts that volume I of his book derives the critical dimension of the bosonic string theory in 7 different ways. So why is there so much ado about nothing? Our ability to derive results in 7 different ways shows that we kind of understand it. Those ways also connect different portions of mathematics - but it is the whole structure of string/M-theory, and not a division algebra, who unifies all this stuff.

Moreover, as hinted in the previous sentence, what I am really irritated by is Baez's obsessive tendency to reduce all the mathematical cleverness of string theory to the division algebras in general and octonions in particular. His way of looking at all these things shows that he is nothing else than an irrational numerologist who can never distinguish real insights from superficial distractions - and who apparently doesn't want to distinguish them.

The division algebra is just one way to look at all the issues linked to 7 imaginary units with the G_2 automorphism group, and all the associated algebraic structure. The octonions as an algebra are just one possible corollary or intellectual projection of the structure behind it. And even all these structures combined are just a totally minuscule portion of the string theory's wisdom, much like John Baez's knowledge of string theory is an infinitesimal fraction of the knowledge of a good graduate student.

So the article hyping a set of a few simple mathematical observations is just pathetic. It's not really demonstrably wrong - unlike Garrett Lisi's pseudoscientific "theories of everything" that can't agree with the most elementary facts of particle physics such as parity violation. But it's still morally wrong because it totally distorts what is understood and what remains mysterious about the remarkable mathematical structure we still call string theory.

This distortion shouldn't be unexpected from authors who don't have a clue about string theory. But this is no real excuse because Scientific American shouldn't be publishing stuff written by people who don't know what they're talking about.

Bill Hooke on Tornadoes

EDITOR'S NOTE:  The brilliant guest post below comes from Bill Hooke, Director of the American Meteorological Society's Policy Program, who first published it on his blog, Living on the Real World on April 23. Bill is a long-time friend, colleague and mentor.  This post, and his blog, deserves a broad readership. H/T: JG
Guessing Games (remember Battleship?), Tornadoes, and Lambert-St. Louis International Airport

Today [April 23] St. Louis suffers, but breathes a sigh of relief. Last night a storm moving through the area spawned high winds, hail, and one or (possibly) more tornadoes that destroyed dozens of homes and hit the main terminal building of Lambert-St. Louis International Airport, badly damaging the roof, and scattering glass throughout the structure. As of this morning, the airport remains closed indefinitely, with officials saying it will take days to put the facilities to rights. Miraculously, though several people were injured, no one was killed. Sounds trite, but it could have been worse.

Across the nation, the catastrophe is but the most recent of this spring. Recall that the United States is really the tornado capital of the world; only 10% of tornadoes occur anywhere else around the globe, and they’re the weaker ones. And this year, tornadoes have been in our news for weeks.

Tornadoes present a unique challenge to the public – that would be the some 200 million of us who live in harm’s way – to policymakers, and to hazards managers. Think about it. The strongest tornadoes pack winds approaching 300 miles per hour. That’s twice the wind speed that you see in the category-5 hurricanes. And the force goes as the square of the wind speed, meaning the greatest tornadic winds pack four times the wallop.

In principle, we could design structures that would survive such power. In fact, armies did, in World War, to protect gun emplacements from artillery shells. They called them pillboxes. Much of the structure lay below grade. Any view was afforded through narrow slits. Glass? You’ve got to be kidding.

If tornadoes were ubiquitous, and present all the time, and if despite such continuous violence, the human race had developed to its present point, we would live this way. But each year’s tornado tracks cover only a small area. [Brace yourself, a bit of arithmetic coming up!] Sticking to round numbers, let’s say we have 1000 tornadoes a year here. Let’s go a little further, and figure that for each one, there’s a swath of damage maybe ¼ mile wide, but 4 miles long. This is probably an over-estimate for the smaller, more common ones; but an underestimate for the bigger ones. So that’s one square mile of damage for each tornado. For the whole year? Maybe 1000 square miles of damage. Picture that as a square roughly 30 miles on a side…and now compare that with the damage swath for a single hurricane, making landfall. There an area maybe 30-50 miles wide, maybe much more, is affected, and the storm penetrates many miles inland.

So the area likely to be damaged by all the tornadoes of a single year might be comparable to the area of property loss affected by a single hurricane.

Now meteorologists are no different from your doctor or your stock broker. We all say, “Past performance is no guarantee of future performance. Actual results may vary.” But you get the general idea.

Now let’s compare the 1000 square miles damaged each year, first with the 2 million square miles of U.S. land in tornado-risk areas. Any particular point (a home, or a building)? Maybe only one in 2000 is hit in any given year. That means (pointy-headed statistical alert) that your house has a 50-50 chance of being hit over a 1300-year period. And even if my back-of-the-envelope calculation is off by, say, a factor of four (quite likely, by the way), the risk of the tornado hitting your actual house might be as low as say once in 300 or so years. Seems like a long time, maybe.

And that’s why we really don’t design homes, even in tornado-prone areas, to survive a direct tornado hit. However, in Oklahoma, the odds of being hit are higher. And people in Oklahoma know this. What to do? One strategy? Tornado shelters, below ground, outside the home (remember Dorothy and the Wizard of Oz?). They look rather like those World War II pillboxes. Of course, it’s not that easy to install them properly in clay soils, and when unused, they become habitat for insects and snakes, etc. Some prefer a suggestion put forth by Ernst Kiesling, who proposed houses be constructed with an reinforced interior safe room.

Now let’s think about urban areas, versus individual homes. In the United States, about 2% of the land area is today considered urban. But this percentage has been growing at a rate of about 10% per decade – maybe doubling since the end of World War II. So back then, if one percent of the land was urban, maybe we could expect 10 tornadoes a year on average to hit heavily populated areas. But going forward, we can expect that figure to be 20 tornadoes or so. And, as we continue to concentrate our population, the chances for a truly catastrophic tornado event inexorably mount.

In a word: tornadoes hitting downtown areas in the past? Rare – almost unheard of. But tornadoes hitting downtown areas in the future? Increasingly common.

It’s time to start planning and building awareness of such risks, and developing plans. Evacuating urban buildings? Problematic. Opportunities to shelter-in-place? Minimal. To work through a strategy providing for safety in the face of this threat will require the best minds in both the private and public sector. And it ought to start now.

A final note on airports. These by themselves are an even small fraction of the national real estate than the urban areas in which they’re embedded, right? But on May 5th 1995 a line of thunderstorms producing softball-sized hail went over Dallas-Fort Worth Airport at a time when American Airlines was conducting a hub operation. The hail caught ten percent of American’s entire fleet on the ground. All those planes were grounded for several days while they were inspected. Some required considerable maintenance and were idled for a longer period. Just sixteen years later, another airport has been hit. An example – only one – of our increasing vulnerability to small-scale, violent weather.

Do you remember that old pencil-and-graph-paper game (or more current electronic versions) you played called “Battleship?”

You’d pencil in a fleet of warships at different locations on the gridded paper (say letters along one side and numbered across the page). You and your opponent would then take turns trying to “sink” the opponent’s ships, by guessing their coordinates and “shooting” at those locations? Once you’d hit every square occupied by a ship, that ship was sunk and could no longer fire back. Sink all your opponents ships and you won. [Maybe you had more of a life. But my brother and I would play this.]

Anyway, with our urbanized populations and critical infrastructure, we’re playing “Battleship” with the Earth on which we live.

Only in this Real World, it’s always Earth’s turn.

Chronic pancreatitis - The Lancet review

There are two forms of chronic pancreatitis

Chronic pancreatitis is a progressive fibroinflammatory disease that exists in 2 forms:

- large-duct forms (often with intraductal calculi)
- small-duct form

Causes of chronic pancreatitis

Chronic pancreatitis results from a complex mix of:

- environmental factors - alcohol, cigarettes, and occupational chemicals
- genetic factors - mutation in a trypsin-controlling gene or the cystic fibrosis transmembrane conductance regulator (CFTR)
- a few patients have hereditary or autoimmune disease

Management of pain

Pain is the main symptom that occurs in two forms:

- recurrent attacks of pancreatitis (representing paralysis of apical exocytosis in acinar cells)
- constant and disabling pain

Management of the pain is mainly empirical, involving:

- potent analgesics
- duct drainage by endoscopic or surgical means
- partial or total pancreatectomy
- steroids rapidly reduce symptoms in patients with autoimmune pancreatitis
- micronutrient therapy to correct electrophilic stress is emerging as a promising treatment

Steatorrhoea, diabetes, local complications, and psychosocial issues associated are additional therapeutic challenges.

References

Chronic pancreatitis. Dr Joan M Braganza DSc a , Stephen H Lee FRCR b, Rory F McCloy FRCS c, Prof Michael J McMahon FRCS d. The Lancet, Volume 377, Issue 9772, Pages 1184 - 1197, 2 April 2011.
Image source: Wikipedia, public domain.

NASA: today's launch of AMS delayed by 3 days

Tonight, at 9:47 pm Prague Summer Time i.e. 12:47 pm Californian Daylight Saving Time, the space shuttle Endeavour was scheduled to be launched to bring the Alpha Magnetic Spectrometer (AMS) towards the International Space Station where it is going to be attached.

See Vancouver Sun.

However, a a problem with power unit 1 heaters postponed the launch at least by 71 hours.



Little Dr Martina Dobešová is giving the not-so-little mole to the U.S. Ambassador to Czechia.

AMS, a device produced at CERN's labs, will be observing charged cosmic rays which could optimistically shed some light on the composition of dark matter, too. The mission will be led by the little Czechoslovak mole.

It will be the last flight of a space shuttle so let's hope that Endeavour won't join Challenger and Columbia.




The girl in the (Czech) video above is the new chief of NASA. Moreover, her father is the director of a company that produces the moles in space, or whatever he is doing. ;-)

Monarchies and republics

Prince William and Kate Middleton have become Duke and Duchess of Cambridge after they married, congratulations. The British imperial taxpayer has happily paid $40 million for the wedding, enough money to feed dozens of people throughout their lives.



I suppose you haven't watched it. Neither have I. It's great and lovely. Kate Middleton, a daughter of flight attendants, found something that many girls dream to find, namely her prince. And the courageous prince whom I consider an utterly positive character has found a pretty babe, too.




Some nations remain monarchies, some nations became republics after they abandoned all the artifacts of feudalism. We did so in 1918 when Czechoslovakia was created. After a millennium of the Czech Kingdom, which had been a part of dominantly German-speaking empires for most of the time, a key to independence from the German-speaking masters were allies in the U.S. and France, so it was pretty much guaranteed that we would reproduce much of their republican systems and abolish monarchy, too.

Does it make a difference? Which system is better?

First of all, it doesn't really matter much. The main difference resulting from a monarchy is the existence of one additional family of celebrities who are celebrities just because they belong to a particular family. Capitalism and democracy in the U.S. and the U.K. don't differ much. Neither do the legal systems.

Let me admit to the U.S. readers that throughout the 10 years I spent in America and despite my great and gradually increasing admiration for the U.S. founding fathers, I had no strong opinion about whether the independence - or the loss of a major British colony - was such a great event. The crazy king wanted you to pay taxes, didn't he? Well, the non-aristocratic leaders including Barack Obama often insist on the same thing. You had smaller capacities to influence the British politics? Well, that's because you lived in a province used as a storage for prisoners etc. It was different than today but it did work, too. And even today, with the U.S. democracy, it's still true that people's wealth does depend on the place of birth - even though the change of the functional dependence since 1776 may be viewed as being beneficial for the U.S. territory. ;-)

In the case of Czechoslovakia, to pick an example where I know details, the kingdom was formally abolished but the president has literally inherited much of the perceived status that used to belong to the king. So he (and maybe in the future, she) enjoys an immensely high approval rate and everyone finds it appropriate that he is using the Prague Castle, a highly representative place formerly associated with the kingdom, as a place to work and show his appearances.

The first Czechoslovak president Dr Thomas Garrigue Masaryk was a "daddie" of the Czechoslovak nation and he was almost universally loved. His successor, Dr Edvard Beneš, a bright man largely chosen as the successor by Dr Masaryk himself, was viewed as the political and intellectual elite of the nation - and he also became the mirror of the hopeless situation of the democratic nation when it faced Nazism as well as communism.

The approval rates of all the communist presidents were between 100 and 105 percent. It's not just the communist fabrication that was playing a role. I think that even largely anticommunist ordinary people would have some respect e.g. for Mr Gustáv Husák, the last (Slovak) communist president of Czechoslovakia. Mr Husák fought against the Nazis and was later, in the 1950s, given a life in prison by (other) communists. His predecessor Mr Ludvík Svoboda - the president who unfortunately became a tool to legitimize the "normalization" regime after the Soviet destruction of the 1968 Prague Spring - was a top general leading a group of Czechoslovak soldiers who came from the USSR and helped the Soviets to liberate our territory.

In all cases, including the era of late communism since the 1960s, the president has been chosen so that he (or she?) is awarded for some of the life-long achievements and courage. In this sense, he's analogous to a king. The approval rate of President Klaus fluctuates around 70 percent despite the fact that he used to be controversial as a prime minister, with the approval rate often slipping below 30 percent. He may still be controversial in some circles but he has become a representative of a large majority of the nation, anyway.

This figure of 70 percent is impressive given the obsession of the Czechs to complain about everything. It is much closer to the 80 percent approval of Queen Elizabeth than to 47 percent approval rate of Barack Obama or the 20 percent approval rate of Nicolas Sarkozy, the current leaders of republics that inspired the republican character of Czechoslovakia in 1918. Our president, much like the Queen, is a person who is allowed to be so much above everyone else that he doesn't really participate in the confrontations that people consider to be divisive. He is paid enough so that the people don't have to think about the ways how he steals things. (And when it is about a pen, everyone knows that it is just some fun.)

Now, of course, there is a striking difference. The status of a king or queen is hereditary. This has consequences. While the first feudals had to be exceptional people, or they have at least done some exceptional things which earned them their titles, nothing can guarantee that the same description applies to their arbitrarily distant descendants. But does it?

I don't know. I think that the royal families across the world are OK but in some sense, they're no longer "genetically" exceptional. (Let me avoid comments about their inbreeding that doesn't seem to be too frequent and far-reaching today, anyway.) Most of their special skills may be reduced to social effects, especially to the wealth given to them by the people of their kingdoms. With a lot of money and with some traditions, it's not shocking that you may become much better with the horses and in golf. The young members of royal families may also be trained to speak many languages, and so on.

But are they better, for example, in science? I think that it used to be the case. While the background of top scientists used to be diverse, and parents of great scientists could have been both superpoor as well as hyperwealthy, I think that the wealthy people were overrepresented - and not only because of their families' better access to education.

I am not sure it is still the case. In particular, I am not aware of any member of an aristocratic family who is extremely good in theoretical or particle physics. (Of course, most of the explanation is that the Jewish nation doesn't have too many aristocratic families.) Even if I have forgotten about someone, or if I am unaware of someone, I think it is fair to say that these folks are not surely overrepresented in the top physics community. ;-)

Instead, the royal families are largely what the tabloid press makes out of them: celebrities analogous to actors and singers who are being watched on every step. They're trained in skills that can be appreciated by the most average citizens. When a prince tries to act as an intellectual who struggles for far-reaching and long-term results, his being an average thinker usually badly manifests itself - and William's father is one of the most obvious forbidding examples. If a few more people targeted by the tabloid press and the hereditary character of the ruler are the only major differences between a kingdom and a republic, I don't think we're losing much by not having a monarchy anymore.

The other differences are infinitesimal and I don't think that they're terribly harmful for the monarchies, either. Of course, I am talking about some constitutional monarchies only. An aristocratic dictatorship makes it way too easy for the ruler to prevent progress for long decades which is a bad disadvantage in the modern world. Democracy is hugely imperfect but its ability to self-regulate still makes it a better system than the previous ones.

However, when some special people - who differ by their financial security throughout their life - just influence the society in some way, I don't think it's bad at all. Hunger is a good cook but a bad adviser, a Czech proverb says. Because ordinary people's chances of becoming a king or queen - and Kate Middleton and her colleagues are the only exceptions - are essentially zero, the jealousy aspect evaporates, too. Monarchies can work but they're not necessary.

Thursday, April 28, 2011

Weather is Not Climate Unless People Die

UPDATE: At Dot Earth,Andy Revkin has collected a great set of expert perspectives on this event.

UPDATE #2: Subsequent to this post Gleick has added a new parenthetical to his post, that says the opposite of his first paragraph: "More extreme and violent climate is a direct consequence of human-caused climate change (whether or not we can determine if these particular tornado outbreaks were caused or worsened by climate change)." 

Peter Gleick is only the most recent climate scientist to try to exploit extreme weather for political gain, writing at The Huffington Post:
Violent tornadoes throughout the southeastern U.S. must be a front-page reminder that no matter how successful climate deniers are in confusing the public or delaying action on climate change in Congress or globally, the science is clear: Our climate is worsening. . .

In the climate community, we call this "loading the dice." Rolling loaded dice weighted toward more extreme and energetic weather means more death and destruction.
You can see in the graph above that there is no upwards trend in US tornado deaths, 1940-2010 (PDF).  This year's very active season and tragic loss of life won't alter that conclusion.  Actually there is a sharp downwards trend during a period when US population grew a great deal (consider this graph from Harold Brooks for a longer term perspective UPDATE: See below for this graph through 2010).  There is obviously no evidence of "more death and destruction."  On the lack of trends in destruction see this paper.

On the significance of yesterday's tragic tornado outbreak, consider this perspective from NOAA:
What's the risk of another super-outbreak like April 3-4, 1974? It's rare; but we don't know how rare, because an outbreak like that has only happened once since tornado records have been kept. There is no way to know if the odds are one in every 50 years, 10 years or 1,000 years, since we just do not have the long climatology of reasonably accurate tornado numbers to use. So the bigger the outbreaks, the less we can reliably judge their potential to recur.
Gleick's column is all the more ironic for this statement:
Climate deniers who have stymied action in Congress and confused the public -- like the tobacco industry did before them -- need to be held accountable for their systematic misrepresentation of the science, their misuse and falsification of data, and their trickery.
Obviously, it is not just climate deniers who are engaged in misrepresentation and trickery. Here is what Gleick wrote just a few months ago:
While the public may not fully understand the difference between climate and weather, or understand how the world could be warming while it's cold outside, most well-known climate deniers fully understand these distinctions -- they just choose to ignore them in order to make false arguments to and score points with the public and gullible policymakers. Cherry-picking selected data that supports a particular point (i.e., it's cold today), while hiding or ignoring more data that points in exactly the opposite direction (i.e., global average temperatures are rising), is bad science and it leads to bad policy. Just last week Glenn Beck pointed to a snowstorm in Minneapolis as proof that global warming isn't happening. He knows better, but his audience may not.
Well said Peter.

UPDATE: Here is a graph of US tornado deaths 1875-2010, data courtesy of Harold Brooks, NOAA (Thanks Harold!):

Al Gore, religion, Our Choice, and iPad

Larry Bell of Forbes wrote a nice article:
Climate Change As Religion: The Gospel According To Gore
He kindly credits Michael Crichton for some of the first crisp and complete explanations why the global warming orthodoxy has become a religion of the urban folks.

However, if it is a religion, it should have a Bible, right? And what is the coolest medium to create the Holy Scripture of a new 21st century religion? Well, take an iPod Touch and - pkh-vřsr-prd - make it bigger.

Al Gore's Our Choice from Push Pop Press on Vimeo.


So the right idea is to create the coolest, hugely interactive iPad book app ever written (one based on his climatic religious book, Our Choice), with an hour of films embedded in it, among other things, and sell this piece of climatic religion just for $4.99.




It seems impressive - and Gene, don't be afraid to buy a copy for your iPad and tell us what you have experienced. ;-) Unless Osama bin Laden creates his own iPad app, Al Gore will ultimately become the most influential bigot and global warming alarmist in the Middle East, too. :-)

Well, it actually seems that the app works both for iPad and iPhone (click to download). I will wait when the app is given for free; the paper version of his trash book already costs $0.88 at amazon.com, down from the original $13.77.

As an updated Buddhist proverb says, modern information technology offers humans a key to the heavens; the same key opens the gates of the hell, too. It is somewhat scary that because of the accumulation of gray green capital, one of the most deluded and atrocious aš$holes in the world who should be jailed for the rest of his life was able to pay for the creation of one of the most technically impressive iPad app that he will undoubtedly use to brainwash thousands of people.

Just to show you the stunning new benchmark for e-books that the rotten apples who have joined al-Gore (former Apple engineers) developed, see this introduction how to browse the e-book:

Al Gore's Our Choice Guided Tour from Push Pop Press on Vimeo.

SIlver


Here is my SLV Trend Model going back 3-4 months.  While SLV has risen about 60%, SLV calls are up 100-300%.  This is how a powerful trend can turn up the volume on profits.  They all aren't this good, but a few good grand slams go a log way to nourish portfolio returns.

Magic Mirror Tricks: Exploring Symmetry

Two oldie-but-goodie books give children some fun exposure to symmetry. The Magic Mirror Book and Magic Mirror Tricks show incomplete illustrations--sometimes halves of objects, especially in the tricks book, hence the link to symmetry--that children can complete by holding a small mirror up next to the picture. The books, though out-of-print, can be found very cheaply.

To continue the symmetry lesson, I drew a light pencil line down the center of a piece of paper and asked my son to make a pattern block pattern on one side of the line only. He traced the blocks to make a new symmetry puzzle which he then completed by finishing the design on the other side of the line. He quickly discovered it was easier to trace blocks if he used the magnetic blocks on our new cookie sheet math board so the pieces didn't move.

I then asked him to make a riddle to give a hint as to the picture he'd made. He wrote one about a lion, the second about a hyena.














It would be fun to further extend the lesson by making his own Magic Mirror book. Sounds like a good summer project!

Wednesday, April 27, 2011

LHC: the 115 GeV "Higgs" evaporates after 100/pb

Jester has analyzed YouTwitFace, the new overarching social network, and concluded that ATLAS has looked for the diphoton decays in its 100/pb (one hundred inverse picobarns) of data - by now, it has recorded over 200/pb of collisions - and the 4-sigma signal of a decaying 115 GeV "Higgs" has gone away.




CMS has looked into the same channel and it sees no excess of diphoton events. So sorry, Ms Wu.

Is YouTube Sharia Tube? Pulls plug on anti-jihadist Vlad Tepes

John @ Right Side:
I’ve frequently featured or linked to the Vlad Tepes counter-jihad website here on my blog. I go to Vlad’s site because it is always a treasure-trove of information and videos about what’s really going on inside the World of Islam – items that you will never read or watch on Good Morning,America or on CNN’s nightly news.

Tonight I made my regular trip over there and found an announcement that YouTube has shut down Vlad’s video account,

HT

Muslims now pray in Italian Streets: Video!

We see it spreading from France to Greece and now Italy. Visit Vlad Tepes now.

Kathy Shaidle & Ezra Levant on Human Rights Police

Five Feet of Fury on Ezra



Free speech? What about free singing in the once great UK?

Hot Naked Muslim Actress may cause standard Islamic crazy response: Fatwas, Riots, Death



Sila Sahin has been branded a "whore" and a "western slut" after appearing topless
Muslim actress causes storm after posing naked for Playboy mag

A kebab shop owner, asked on German TV what he would do if Sila were his daughter, replied: "I would kill her. I really mean that. That doesn't fit with my culture."

Muslim Leader. Only Support Dhimmi Candidates. In Canada. In Our Cities

Read all about it at the rascally Blazing Cat Fur: Only Support Dhimmi Candidates Who Agree To Make It "A Hate Crime To Associate Islam To Terrorism"

Remember - our politicians are hanging around with bat shit crazy Islamist all over this great country! Yes, even in your quiet neighborhood.
Start asking them questions and demanding answers!

NASA on Shuttle Costs

At USA Today Dan Vergano has an article taking a look back at the Space Shuttle program, which is scheduled to fly its last flight this year.  I chatted with Dan yesterday about the program and in particular the difference between the estimates that NASA provided to him of total program costs, $113.7 billion, and those that Rad Byerly and I recently published, $192 billion.

My first impression was that NASA did not adjust for inflation in their tabulation (what the students in my quantitative methods seminar this past term learned was a methodological no-no).  Dan did a follow up and this was indeed the case. Here is an excerpt from the email that Dan received from NASA Public Affairs, shared with Dan's permission (emphasis added):
The number I gave you is actual dollars (that is we added the dollar amount for each fiscal year and came up with a total). The author [Pielke] seems to have adjusted his numbers to 2010 dollars then added them up. Because we don't know how he computed his adjustment, we can't comment on how he arrived at his number.

We estimate the total cost of the program in 2010 dollars from FY1971 to FY2010 (which does not include STS-133, STS-134 or STS-135) would be about $209.1 billion.
I'm not sure what is in NASA's numbers that is not in ours, or how they computed the inflation adjustment, but we did our calculations conservatively, so I'm not surprised at the higher tabulation. However, this is the first time in the 20 years that I've been looking at this issue that NASA reports a higher number than we do -- the per-flight difference is small -- $1.6 billion per flight from NASA and $1.5 billion from us, so not a big difference, but it is nice to see a convergence of views.

Karen Clark on Catastrophe Models


Karen Clark, one of the founders of the catastrophe modeling industry, is interviewed by Insurance Journal in the podcast linked above. There is also an edited transcript here.

Here is an excerpt from the accompanying news story:
The need for insurers to understand catastrophe losses cannot be overestimated. Clark’s own research indicates that nearly 30 percent of every homeowner’s insurance premium dollar is going to fund catastrophes of all types.

“[T]he catastrophe losses don’t show any sign of slowing down or lessening in any way in the near future,” says Clark, who today heads her own consulting firm, Karen Clark & Co., in Boston.

While catastrophe losses themselves continue to grow, the catastrophe models have essentially stopped growing. While some of today’s modelers claim they have new scientific knowledge, Clark says that in many cases the changes are actually due to “scientific unknowledge“— which she defines as “the things that scientists don’t know.”
These comments are followed up in the interview:
Your concern is that insurers and rating agencies, regulators and a lot of people may be relying too heavily on these models. Is there something in particular that has occurred that makes you want to sound this warning, or is this an ongoing concern with these?

Clark: Well, the concern has been ongoing. But I think you’ve probably heard about the new RMS hurricane model that has recently come out. That new model release is certainly sending shockwaves throughout the industry and has heightened interest in what we are doing here and our messages…. [T]he new RMS model is leading to loss estimate changes of over 100 and even 200 percent for many companies, even in Florida. So this has had a huge impact on confidence in the model.

So this particular model update is a very vivid reminder of just how much uncertainty there is in the science underlying the model. It clearly illustrates our messages and the problems of model over reliance.

But don’t the models have to go where the numbers take them? If that is what is indicated, isn’t that what they should be recommending?

Clark: Well, the problem is the models have actually become over-specified. What that means is that we are trying to model things that we can’t even measure. The further problem with that is that these assumptions that we are trying to model, the loss estimates are highly sensitive to small changes in those assumptions. So there is a huge amount of uncertainty. So just even minor changes in these assumptions, can lead to large swings in the loss estimates. We simply don’t know what the right measures are for these assumptions. That’s what I meant… when I talked about unknowledge.

There are a lot of things that scientists don’t know and they can’t even measure them. Yet we are trying to put that in the model. So that’s really what dictates a lot of the volatility in the loss estimates, versus what we actually know, which is very much less than what we don’t know.
In the interview she recommends the use of benchmark metrics of model performance, highlights the important of understanding irreducible uncertainties and gives a nod toward the use of normalized disaster loss studies.  Deep in our archives you can find an example of a benchmarking study that might be of the sort that Clark is suggesting (here in PDF).

The Other Big Match Today

Giveaway: Dinah Zike's Fractions & Measurement

Here is my contribution to Homeschool Creations' "Curriculum Clean-Out!"*

I am holding a giveaway for one of Dinah Zike's books (out-of-print, I believe...used but in great condition) called Cross-Curricular Classrooms Thematic Manipulatives: Fractions & Measurement.  This is a "series of illustrated manipulatives." It mentions using them in conjunction with Zike's Big Book of Books, but if you're into lapbooking or fold-it books, you already know how. Blacklines are included in the book for publishing centers. Making a layered book with fractional parts. A trifold pizza book. Question and answer books for fractions. Pop-up book pictures...and lots more. Basically gives you all kinds of blacklines to make hands-on paper visuals (think lapbooking) while studying fractions & measurement.


Four ways to enter. You need to post a comment for each entry.

1. Please comment, sharing how you use (or want to use) paper folding, mini books, hands-on learning in math.

2. Enter a second time if you are a follower of love2learn2day.

3. Tell about my giveaway on your blog and link back to here.

4. Enter again if you contribute to this week's Math Monday Blog Hop. :) 

U.S. Shipping only. Be sure to leave contact information in case you're the winner. (jane doe at gmail dot com) I'll announce the winner at next week's Math Monday Blog Hop.

*Also, if you want to join in on the Curriculum Clean-Out, you can post something on your own blog to give away OR you can enter contests on a whole host of blogs to win items that others are giving away. Link-up at Homeschool Creations. I won a couple neat things last year! You do not have to host a giveaway to enter other contests.



Photobucket

U-shaped link between Internet use and children health - beware of heavy use or very little/none

Study participants were categorized into 4 groups according to their intensity of Internet use:

- heavy Internet users (HIUs; >2 hours/day)
- regular Internet users (RIUs; several days per week and 2 hours/day)
- occasional users (1 hour/week)
- and non-Internet users (NIUs; no use in the previous month)

Health factors examined were:

- perceived health
- depression
- overweight
- headaches
- back pain
- insufficient sleep

U-shaped link

Heavy Internet users of both genders were more likely to report higher depressive scores.

Only male users were found at increased risk of overweight and female users at increased risk of insufficient sleep.

Non-Internet users (NIUs) and occasional users also were found at increased risk of higher depressive scores.

Back-pain complaints were found predominantly among male non-Internet users.

There was a U-shaped relationship between intensity of Internet use and poorer mental health of adolescents. Heavy Internet users were confirmed at increased risk for somatic health problems.

Regular Internet use (up to 2 hours per day) is OK

Health professionals should be on the alert when caring for adolescents who report either heavy Internet use or very little/none. Regular Internet use as a normative behavior without major health consequences.

Take home point

Whatever the intensity of your Internet use is (if you are reading this, my guess is that the "intensity" of you sedentary lifestyle is high), don't forget the benefits of regular exercise:


"Health Promotion" video: Benefits of exercise.

References:
A U-Shaped Association Between Intensity of Internet Use and Adolescent Health. PEDIATRICS Vol. 127 No. 2 February 2011, pp. e330-e335 (doi:10.1542/peds.2010-1235)
Image source: Wikipedia, public domain.

Education bubble

One of the world's most ingenious venture capitalists, Peter Thiel, the father of PayPal and the first major Facebook investor, believes that the air from the subprime bubble has already been moved into another, perhaps more long-lived bubble waiting to be burst, the higher education bubble.
Google News, Tech Crunch, Business Insider, CIP, Bee
What do I think? Well, I completely agree. People are wasting way too much money and time with formal education and degrees, especially when it comes to degrees at expensive universities. Both at the global level and the Czech level, the number of college degrees people pursue is unnaturally high.




By the way, if you ask how I took the picture of Peter Thiel, well, I was just walking on a sidewalk near my concrete block and a superfancy Mercedes suddenly stopped nearby and took me to the airport. So I was suddenly walking around a castle in Nice, France, and Richard Lindzen just happened to be taking a picture of Peter Thiel and other famous faces, so I took my copy, too.

How many readers would think that I am just making it up? ;-) I assure you that your humble correspondent is unable to lie.

But back to the main story. There is a certain fraction of people in the society who are actually able to learn certain complicated things at a high enough level. There is also a limited amount of work that the society needs to be done and that require college or higher education. And there is a limited chance that the particular stuff that the people learn will be useful for their future source of income. And there is a rather small difference in the things you may learn at different possible places.

When it comes to all these limitations, it is pretty clear that the people are spending way too much time in colleges. First, too many people are trying to get degrees in various disciplines which inevitably drags the average quality of the members of these communities closer to the bottom of the sea.

Second, there is still a lot of simple work - that doesn't require any PhD and not even lower degrees - that the society needs to be done but there's no one who expects to do such jobs. Third, most of the stuff that the people learn in the colleges is not directly relevant to what they're doing later. And fourth, the advantages of an expensive or famous college or school turn out to be largely inconsequential for the money-producing occupations.

Respect for education has become one of the clichés that a large fraction of the society has adopted but it has been mixed with political correctness. After all, everyone is equal, so if one combines these two insights, it follows that pretty much everyone should struggle to get a college degree if not a PhD. But should she?

It has become almost heretical to ask such a question. However, this question should not only be asked but the likely answer for most people is No. A typical person spends a significant portion of her life with similar activities and those years can't really be regained afterwards because macroscopic processes are irreversible.

Some people such as Lexington of the Economist who disagree with Thiel show graphs that demonstrate a huge correlation between the average income and the level of education.



However, what this argument overlooks is a well-known wisdom that
Correlation is not causation.
If A (higher level of education) is correlated with B (higher expected salary and lower odds of unemployment), it doesn't mean that A is a cause of B. Even if the correlation is such that it is unlikely to have arisen by accident, it doesn't mean that there's any direct causation between A and B.

Naively, you could think that either A caused B or B caused A. However, it's not true. There is a third possible explanation - namely that both A and B were caused by something else, namely C. This largely applies to this case as well - and C is mostly the "innate aptitude" or something similar that existed before the decision to acquire or not to acquire a college degree. The talented people are likely to have a higher income whether or not they get a degree - but they are also more likely to get a degree so these two consequences of their talent will end up being correlated with one another even though there's no direct causation in between them.

But there is one more reason why the graph above doesn't disprove the idea of a higher education bubble. This bonus reason is that the higher education bubble exists on the side of the employers, too. I think that it's not just the consumers - the students who pay tuition - but also the employers who are still overestimating the value of the degrees, even though less so than the payees of the tuition.

Well, an employer surely wants an employee who is good at whatever work he is supposed to do. This requires some talent, eagerness to work hard, and some ability to deal with the co-workers, business partners, and environment, to adapt, learn new things, and so on (I have surely missed some important issues). And those things are largely correlated with the level of education, too.

However, sending a person to a 5-year or 15-year process of higher education is not necessarily the most effective method to figure out whether he is good at something much more specific. Chances are that an employer may find out whether someone is appropriate by much more effective - and much more accurate - methods than by looking at degrees in the applicant's CV.

In the previous paragraphs, I have largely discussed jobs that are a "preparation for life". However, there also exists a more inherent side of education, one that is obviously closer to my heart. John Dewey has said
Education is not preparation for life; education is life itself.
Obviously, knowledge of many things has an immense value by itself, regardless of the economic consequences. You don't expect a string theorist to say anything else - or to have a lower respect to pure knowledge, do you? Nevertheless, I think that even many (or most) high-energy theoretical physicists are doing their job just like people are doing any other job - as a source of income that is convenient enough, without any special emotions.

Fine. So liberal education and teaching of pure science is needed, isn't it?

Except that even in this spiritual realm of education, there should still exist some efficiency in the process of teaching and learning. Even if you forget about the money, it's questionable whether the time - the lives of the people - is being invested properly and efficiently. The most straightforward way to quantify the question whether time is being wasted is to convert time to money according to the "time is money" law and let the people optimize their money again. But even when this is not done, people should try to think rationally whether they're doing the right thing.

A special discussion is required to discuss tuition and the differences in its magnitude at different places. I have been largely educated in the socialist (and post-socialist) system where education was (and still is) free - and the socialist propaganda would emphasize this point about tuition (and personally paid healthcare) in the evil capitalist system whenever it could.

Well, I think that tuition may play a helpful role - and in some contexts, it is literally an investment and the students should pay some money for the investment, at least to cover a big part of the expenses. The school's chance to obtain more money from the excited students (and their parents) is exerting pressure on the school to increase its quality which is good. This is intuitively the case for law schools or management schools that prepare the students to earn some big money.

However, would I recommend someone - who is not a multimillionaire or their son or daughter - to pay tuition around $40,000 a year or higher? Especially if you discuss physics? I wouldn't. I find it crazy. There are many things that I have learned at schools. There are many more things I have learned outside the schools. When all those things are reasonably quantified, I don't think that the schools were as useful as hundreds of thousands of dollars.

In reality, people are paying money for the studies in sciences because they expect long-term employment in the field.

Alternatively, you may divide the tuition to individual lectures and you would get dozens of dollars for every single hour-long lecture. Isn't that too much? I can imagine paying $10 for some good lectures - but every lecture, with a topic defined by someone else and with a very variable quality? I don't think so. People never make this comparison with other ways how the dozens of dollars may be spent. That's why the tuition ceases to be a regulating mechanism pushing the subjects to behave economically or rationally.

Some people don't mind if they're being bored while sitting in a class where most of the information can either be learned much more quickly or should be learned more slowly (and/or in the solitude of the homes), or you don't care about it all (especially because you could learn some of the "details" later if you needed them which is unlikely), is just a waste of time. Of course, the teacher has to be paid but for the student, it's often a lot of work, too. Does he always appreciate the time invested to such things?

Various colleges have totally different flair. Almost no one in the West knows Charles University - but after a decade in the U.S., I am confident that the undergraduate education in Prague is pretty much equivalent to that at Harvard or elsewhere - if not better. The inferior quality of the research environment kicks in at the graduate level.

But at the graduate level, it's still true that e.g. the physics PhD program at Rutgers is not that different from the corresponding program at Harvard even though Harvard is much more famous a school. At the postdoc level and faculty, Harvard is arguably a stronger place - even though it wasn't the case in the mid 1990s when Rutgers and Santa Barbara were the main machines driving the Second Superstring Revolution (before the traditional top schools sucked most of the top brains).

However, does it really matter whether you become a PhD student at one school or another? There's a lot of worshiping of the brands. It's a special feeling to be excited e.g. about the brand of Harvard (much like some teenagers worship Nike or another brand - something I could never understand). I remember my excitement (and songs) in 2001 when I became convinced, after the interview in the Harvard Society of Fellows, that I did well.

But this kind of excitement fanned by some superficial knowledge - while an interesting portion of human emotions - is exactly what is ultimately producing bubbles. In reality, even when it comes e.g. to the income of the professors, the gap between the top schools and the more generic schools is much smaller than the gap in their brands - and gap in the tuition that people are ready to pay. In my opinion, this is irrational as well.

Moreover, the gap between the brands' influence isn't large in many other contexts. This is why I don't think that famous universities may save otherwise falling quality of research. When I learned five years ago that laymen interested in fundamental physics are ready to pay as much attention to a stinky and idiotic computer administrator with 0 contributions to science at a not-stellar-class university as they would pay to the big shots from the world's most famous university, I have learned my lesson. The brands really don't make any difference - and it is primarily the people who waste for expensive tuition who think otherwise.