A wonderful lesson in evolution and survival: The Dicynodonts

Some of the best blogs are written by professionals that are between jobs, often graduate students in transition. Tetrapod Zoology is one of those blogs. This is an excerpt from a fascinating story ... a world about which I know little ...

Darren Naish: Tetrapod Zoology: Dicynodonts that didn’t die: late-surviving non-mammalian synapsids I

... Sad to say, during the Late Triassic, dicynodonts dwindled in diversity until by the Norian (the penultimate stage of the Late Triassic) they were down to just three genera, and all of these were close relatives within the clade Kannemeyeriiformes (King 1990, Maisch 2001). I always liked Richard Cowen’s suggestion that these last forms were ecologically peripheralised, endangered species that hung on to existence in remote ecosystems where life was harsh ... dwindling in numbers, and living in a world where big archosaurs were now controlling all the terrestrial ecosystems, those poor last dicynodonts gradually faded into oblivion, until they were but dust in the wind, dude. That was a Bill and Ted reference.

In June 1915 several fragmentary fossil bones were discovered near Hughenden in Queensland (Australia)... a 2003 reappraisal of the specimens by Tony Thulborn and Susan Turner showed that the bones could not belong to anything other than a dicynodont....

But here’s the big deal: the fossils are from the late Early Cretaceous, and thus something like 100 million years younger than the previously known youngest members of the group... So dicynodonts didn’t disappear in the Late Triassic as we’d always thought. They had in fact been sneakily surviving somewhere, and as Thulborn & Turner (2003) wrote, their persistence in Australia and absence from everywhere else suggests that ‘Australia’s tetrapod fauna may have been as distinctive and anachronistic in the Mesozoic as it is at the present day’ (p. 991)...

We mammals are but the shards of rich group of species that mostly died in the Triassic ...

This is why blogs are great, even though they are transient. Soon Darren will be too busy to put this kind of mini-article together.

Zolpidem and the nature of consciousness

The BBC has a fascinating report on non-responsive persons who become transiently partly responsive while taking the drug Zolpidem.

It's not completely surprising. Over the past few years it's become apparent even to laypersons that consciousness (whatever that is), and lack of consciousness, are not simple or binary states. A human can have a lot of intact nervous system and yet not be "conscious", conversely humans can be "conscious" and responsive with a lot of damaged tissue. (One of the reasons Ms. Schiavo's physicians were confident of her prognosis was that she was both non-conscious and had severe tissue damage.)

The theory is that this medication can allow non-damaged parts of the brain to 'go online' and allow responsiveness, even in the absence of the normal mechanism of consciousness.

The story suggests that there are many grades and states of "consciousness" arising from interacting "islands" of neuronal subsystems, and that this and similar medications allows "islands" that are normally unable to interact, perhaps due to a physiologic suppression mechanism, to interact with each other and with the sensory and motor systems. Whether those interacting subsystems could ever produce a "person", and whether that would be the same "person" as the "original", is a matter for some thought. I would suspect that they may lack access to memory ...

[55 yo veterans of past "altered states of consciousness" can comment below ...]

The evolution of Christianity: a feature of the Da Vinci code

I've not read the famous novel and might never get to it, but something good has come of it. Theologians have been compelled by the book's back story to explain how Christian thought developed before 500 AD.

It's a fascinating tale. I'd like to read some of the wannabe gospels that didn't make it into the Book. Gnostic shmostic, what about Philip, Thomas, Mary, Didache and Hermas? I suspect the book's success will give those writings a platform.

I am left, however, as the author no doubt intended, with the impression that Dan Brown was perhaps trying to push an odd agenda as well as tell a fun story. Given the number of people who bought into the Left Behind narrative I'm sure there are millions that will believe just about anything ...

Minnesota - point!

Another point for Minnesota:

Crooked Timber� Incarceration Rates

... Maine and Minnesota had the lowest rates of incarceration (with 0.3 percent or less of their state residents incarcerate)d.

This really is a pretty decent state -- despite the Republican governor. We have a much larger urban population than Maine, so I'd say we come in first.

Ok. I need to say something positive once in a while! The rest of the article points out that the US puts more people in jail than Belarus or Russia. About four times as many people, per capita, as does Canada. Minnesota is inline with the civilized world. What the heck must life be like in those states that bring our average up to its current insane level?

The price of criticism: Science and the Bushies

Just another small example of the Bush culture of loyalty:

Uncertain Principles: Loose Lips Sink Research Grants:

... this year's talk by a program director from the Department of Energy raised the average blood pressure at our table by a good bit.

... she took pains to state several times that both Democrats and Republicans in Congress support science, in a tone that basically came across as chiding us for thinking otherwise. That was annoying by itself, but at the very end of the talk, she specifically warned against taking partisan positions, citing the letter supporting John Kerry that was signed by a couple dozen Nobel laureates as something that made it harder to keep science funding. She said that after that, when she met with administration officials about budget matters, she could see them thinking 'Damn scientists...'

I suspect this would be quite familiar to any Soviet-era scientist. Criticism has a price. Just another brick in the wall ...

It's noteworthy because the Bush culture of loyalty has settled far down into our government. It's a spreading poison ...

Newton's editor? Emilie du Châtelet.

A biographer has made an extraordinary claim about a woman previously known (by a few) as Voltaire's lover...

Love and the Enlightenment | The woman behind the man | Economist.com:

EVERYONE, just about, has heard something about Voltaire, and most of it is flattering. Freethinker, dramatist, poet, scientist, economist, spy, politician and successful speculator to boot, he embodies the intellectual breakthrough of the Enlightenment...

... Almost nobody has heard of the woman with whom he shared most of his life, Emilie du Châtelet. But you can make a good case that she was a more rigorous thinker, a better writer, a more systematic scientist, a formidable mathematician, a wizard gambler, a more faithful lover and a much kinder and deeper person. And she did all this despite being born a woman in a society where female education was both scant and flimsy. Her mother feared that anything more academic than etiquette lessons would make her daughter unmarriageable.

David Bodanis's new biography of Emilie, Marquise du Châtelet, is a belated treatment of a startlingly neglected story...

... Born in 1706, Emilie had three pieces of great good fortune in her life. The first was to be born with a remarkable brain. Her greatest work was to translate the “Principia”, the path-breaking work on physics by the secretive Cambridge brainbox, Isaac Newton, who died when Emilie was 20. She did not just translate his writing from Latin to French; she also expressed Newton's obscure geometric proofs using the more accessible language of calculus. And she teased out of his convoluted web of theorems the crucial implications for the study of gravity and energy. That laid the foundation for the next century's discoveries in theoretical physics. The use of the square of the speed of light, c², in Einstein's most famous equation, E=mc² is directly traceable to her work.

Ok. That's not exactly a modest claim. If it's true there's one hell of a story that's been missed for far too long. We need to get this story into In Our Times, and start rewriting those history of science texts ...

How many individual dinosaurs were there?

My son Ben and I visited the Minnesota science museum last night. An interactive display featured children's questions, including one I've almost wondered about -- how many individual dinosaurs were there?

The guest paleontologist took a rather wild statistical swag at it. Sad to say, I can't recall whether he said "40 quadrillion" or 40,000 quadrillion. I think it was the former. In any case he was far braver than the Google responses, which decline to answer the far duller question of how many have been identified based on the fossil record. Cowardly wimps.

That's 40 million billion, or roughly the national debt in dollars of the United States in 2000. About 5 million dinosaurs for each human alive today. That's fecundity. It gives one a sense of how successful triceratops must have been, and how many wonders remain forever lost (barring a time machine).

Actually, the question I've wondered is how many individual Homo erectus (erecti?) there were to have generated as many fossils as we find ...

I'm surprised science and history books don't give us more numbers. You get a very different sense of American history when you realize how very few people lived in Boston. Just about everyone in town must have known Ben Franklin ...

Real ID: our National ID card

Time claims that our coming National ID card (Real ID) is no big thing:

TIME.com: The National ID Card That Isn't, Yet -- Page 1

...Most of the privacy rights — if there really are such things — vulnerable to a nationalized ID card have already been trampled under the wheels of increased security, more efficient law enforcement and better business long ago.

Actually, I think TIME is correct that our privacy is history with or without Real ID (it's a national ID card, let's not pretend otherwise). I do think a reliable and robust indentifier will move things along faster than they would otherwise, but probably only by a four to five years.

We should assume that anyone with money or power (but I repeat myself) will be able to know anything about us that they care to know. If you don't like that, don't vote Republican. If that's ok with you -- well, we'll see.

PS. I fully expect our government will have sold us out so comprehensively that the Real ID program will end up facilitating identity theft rather than alleviating it. What can I say? Don't vote Republican.

Over 55? You're toast.

Shocked, shocked I am to learn that workers over 50 have a 40% probability of involuntary retirement. NPR had a McKinsey spokesperson explaining this was an other reason to save more money. I assume nobody is credulous enough to buy that line any more. Very few people can save enough assuming they work to 67. Almost nobody can really save enough to retire at 55.

For years commentators have announced that the boomers, a healthy lot, will work happily into their 70s. For years I've been astounded that so many seemed to believe this was true. Clearly denial is a big part of the human condition.

It never made a bit of sense. The average healthy 55 year old human has dropped a cognitive grade since their 20s. Experience helps close the gap, but it's not enough for most workers. True, in more senior roles a few exceptional individuals can be very productive into their 60s. Beyond that time, however, even they start to show their age. (Often by curious choices in mates.)

Unless we find a way to slow the natural aging of the human brain we must acknowledge that most "knowledge workers" are past their prime by 50 to 55 (I'm pretty close to that, and really my brain is nowhere near as good as it once was). That doesn't mean one is going to keal over, but it's a good idea to have moved from being a solo producer to a manager.

Once upon a time companies allowed for this. Those days are past. The modern publicly traded company is much too efficient to allow a cohort of sub-optimal employees to accumulate. One way or another, by hook or by crook, the aging will move out.

What's to do? We have to start by getting real. Boomers may work to 67, but they may be bagging groceries. Let's start talking about what that world will look like. Topic one is universal guaranteed healthcare ...

Are humans the best problem solvers?

Hawks, perhaps only semi-seriously, asks a novel question about a study demonstrating that some apes can make plans about the future:

John Hawks Anthropology Weblog

... Why are these kinds of stories always about 'how smart' apes are instead of 'how dumb' people are? I mean, it would be fairly hard to train people to do this task without talking to them. I think that there would be a good fraction of people who wouldn't get it.

Obviously humans are not the fastest or strongest animal. We assume, however, that we are the "smartest" animals. We can solve "abstract" problems better than any other animal.

Of course that's not universally true. A cognitively impaired human may be much worse at abstract problem solving than many animals. Still, it is presumed to be true of "normal" humans.

But is it really? It seems likely that there are certain abstract problems, particularly those that can be solved without language, that some animals will be better at solving than "normal" humans. It will be interesting to run those experiments.

Which brings us to the inevitable next topic. When I was a undergrad goofing off at Williams college (great school, but relaxing compared to Caltech) I struggled mightily in my Ethics course to come up with an ethical program that didn't start out with the premise that humans had special privileges. Problem is, I couldn't figure out how all humans ended up with more privileges than all animals. (Of course I was also thinking in terms of non-human sentiences.)

No-one has devised an ethical program that gives humans special privileges over animals or non-human sentiences without either a 'God said we're special' or 'pragmatically speaking' fudge. I doubt there is one.

That's going to get increasingly challenging.

The Universal Library

The NYT magazine has a surprisingly good article on the digital library ...

Scan This Book! - New York Times

....Turning inked letters into electronic dots that can be read on a screen is simply the first essential step in creating this new library. The real magic will come in the second act, as each word in each book is cross-linked, clustered, cited, extracted, indexed, analyzed, annotated, remixed, reassembled and woven deeper into the culture than ever before. In the new world of books, every bit informs another; every page reads all the other pages.

It's pretty good really, but how could they manage to omit Nelson's Project Xanadu, The Memex (Vaneva Bush, As We May Think) and Dickson's The Final Encylopedia?

They give the impression this stuff is 21st century! It's very mid-20th.

Managing the theft of your identity

As far as I know my identity has not been stolen - yet. On the other hand I have been through some interesting credit card fraud (twice really, the second was $2K spent on computers that took 10 minutes to reverse -- AMEX didn't even blink - so dull). We've also had checks stolen -- that's much worse than credit card fraud. NEVER carry checks.

So I should have some cred when I agree with Schneier that this is a great essay on responding to identity theft. It's trivially easy to take most people's identity, so it's only a matter of time before you'll need this:

HOW TO: Get Through Having Your Identity Stolen - Consumerist

9) Oh yeah, don’t really expect the police to DO anything about it. Even if you know the name and address of the person who did it (as in my case), they don’t do jack. You have to file with your own local police department who has way better things to do. If they live outside your city, oh well. Try not to be offended that they don’t actually care, spend the energy on getting it cleaned up. See Tip #3.

The police really, really, don't care about check fraud either.

BTW, Schneier and everyone else who knows the banking industry also knows how to fix our identity theft problem. Banks must be made liable for the costs borne by the victims of identity theft. The problem would quickly become rare.

Eugenics - the real thing now.

Saletan's article says it well. We've made a de facto peace with eugenics, it will become an increasingly large part of our lives over the next 40 to 50 years.

I don't think any student of humanity doubted that we'd travel this road. It's simply too hard to resist. Of course Lincoln would not have made the cut.

Hawks skeptical on hominid-chimp miscegenation

Hawks doesn't buy the dawn chumans story. I don't have an opinion either way - for once!

I do have an opinion about the way this is being presented in newspapers. They show an image of a modern human next to a modern chimp.

Hmph. Based on Hawk's writings, it sounds like the 'miscegenation'/bestiality "event" was 7 million years ago. I don't think the proto-human of 7 megayears BCE would pass for human today. I have no idea what the proto-chip of 7 megayears BCE looked like - presumably they didn't look like a modern chimp.

I'd like to see a picture of those two side-by-side ...

Cheney and the Agnew strategy

I have a vague memory that Nixon once said that Agnew was his primary defense against impeachment. When Ford replaced Agnew Nixon was a goner.

Molly Ivins isn't interested in impeaching Bush. For one thing:

WorkingForChange-Wreckage of the Bush administration

...I believe Dick Cheney is seriously off the rails, apparently deeply paranoid -- let's not put him in charge....

Saying Cheney is insane is the kind of thing we bloggers do. Molly Ivins is a veteran journalist; about as veteran as one can be these days. I doubt she tossed that line off without some thought, and some background evidence.

Cheney is too old to develop paranoid schizophrenia. He has, however, had several episodes of cardiac bypass, and he's not a young man. It's conceivable that he could have developed an organic brain syndrome with paranoid features -- partly due to his age, partly due to preexisting temperament, and partly due to the cumulative neurotrauma of several stints on bypass.

So it's an interesting question. Is Cheney truly fundamentally impaired, perhaps more severely than Reagan was by his early Alzheimer's Disease? Is anyone else saying this?

Hmmm. I wonder there's any legal maneuver one could use to expose a disabling condition in the VP ...