More on Teleporters: It’s Murder!

TeleporterBack almost two years ago, I wrote an article, Using a Teleporter Is Suicide! It was about some scientists who had written a paper looking at the enormous amount of information that would have to be transmitted for a human body to be “transported” from one location to another. It turns out that it is enormous and so it is likely that teleportation would never be practical. As the title of my article suggests, I think this is all nonsense. All a transporter does is kill you and create a copy of you somewhere else. The fact that the resulting copy thinks that it is you hardly matters to the dead (nonexistent) you.

So I just read Sam Harris’ new book, Waking Up. (I plan to write about it later today.) And in it, he discusses a transporter thought experiment by Derek Parfit. It comes to the same physical conclusion, but takes it in a very different direction. But I think this way of thinking about the basic case makes it crystal clear that anyone who decided to use a transporter would be insane:

[I]magine a teleportation device that can beam a person from Earth to Mars. Rather than travel for many months on a spaceship, you need only enter a small chamber close to home and push a green button, and all the information in your brain and body will be sent to a similar station on Mars, where you will be reassembled down to the last atom.

Image that several of your friends have already traveled to Mars this way and seem none the worse for it. They describe the experience as being one of instantaneous relocation. You push the green button and find yourself standing on Mars — where your most recent memory is of pushing the green button on Earth and wondering if anything would happen.

So you decide to travel to Mars yourself. However, in the process of arranging your trip, you learn a troubling fact about the mechanics of teleportation: it turns out that the technicians wait for a person’s replica to be built on Mars before obliterating his original body on Earth. This has the benefit of leaving nothing to chance; if something goes wrong in the replication process, no harm has been done. However, it raises the following concern: while your double is beginning his day on Mars with all your memories, goals, and prejudices intact, you will be standing in the teleportation chamber on Earth, just staring at the green button. Imagine a voice coming over the intercom to congratulate you for arriving safely at your destination; in a few moments, you are told, your Earth body will be smashed to atoms. How would this be any different from simply being killed?

Shockingly, for Parfit and Harris, it is different. And their reason for thinking so is akin to my reason for suggesting that it might not matter, “There is no stable self that is carried along from one moment to the next.” I put it differently. I suggested that perhaps on a quantum time level, we are constantly being replaced. But that is a rather different — and highly speculative — idea. What I think is far more likely is that the continuity of our cells (atoms) is what matters.

Again: the body on Mars is a copy. Let’s suppose that the original version of you were then killed by being burned alive. Would that not have happened just because there was another copy of you happily terraforming Mars? Or what if the original copy of you wasn’t destroyed? Is that Martian who thinks he’s you really you? I think we can argue that she is. But what we can’t argue is that the person who pushed the green button isn’t also you. And we certainly can’t argue that the person in the example above wasn’t being killed.

Why Mercury Has a Substantial Magnetic Field

Mercury and Earth CoresBack when I was teaching planetary astronomy, one thing really bugged me: Mercury’s magnetic field. Even at that time, we knew that the planet’s field was far larger than we would expect. And with the MESSENGER spacecraft about to crash on Mercury, I thought it would be a good time to think about this issue. So let’s start by getting a little basic planetary astronomy out of the way so that you can understand my confusion.

It is not obvious that planets and moons should have magnetic fields — or at least stable ones that exist for billions of years. And despite the fact that the earth has quite a powerful one (Critically important to protecting we organic creatures!) it has only been in the last century that scientists have gotten a handle on why we have one. The way it works here on earth is not always the way it works elsewhere. But it is thought to be the way it works on Mercury.

When talking about the earth’s magnetic field, people think of a bar magnet. But I think that confuses the issue. The explation for the earth’s notable magnetic field is the dynamo theory. The outer core of the earth consists of liquid iron and nickel. So it is a conductor — a very good one. And since the earth is spinning, this causes the free electrons to circle around due to the Coriolis effect. (Note: the Coriolis effect does not control water swirling around your bathtub drain!) So what we have is a natural current. And as you may know because you took a physics course some time: a magnetic field is created by a moving charge (current). Thus: magnetic field!

If you’ve been paying attention, you should have noticed that the solid core should also create some magnetic field. It has a couple of problems. First is the fact that it isn’t liquid, so it doesn’t get any Coriolis effect movement. Second, it is much closer to the earth’s center of mass, so the direct rotational current is much smaller. So it doesn’t matter on the earth. But it could matter, as we shall soon see.

Clearly, the faster that a planet rotates, the larger its magnetic field should be (all else equal). Consider, for example, our moon — which has a very small magnetic field. And as far as we can tell, it doesn’t have any magnetic field due to the dynamo theory action. It has a tiny liquid core (so little potential current) and an extremely slow rotation rate (so very little current even if there had been a large liquid core). So: few electrons, moving slowly. Not a recipe for much of a magnetic field.

Mercury has the same problems: slow rotation rate and small liquid core. But there is a difference! First, as I indicated above, a solid core creates a magnetic field. In the earth, this solid core is very small. But in Mercury, it is quite large. But in addition to the direct effect, this also means that Mercury’s liquid outer core is further from the center of mass. That means there is a greater Coriolis effect than there is in the moon where the liquid core is way down toward the center. Also: Mercury’s liquid core is substantial.

All of this adds up to Mercury having a larger magnetic effect than I originally thought it should. It is still a weak field: only about one percent that of the earth. But we know why that is: larger outer core and and much faster spin — although Mercury has a larger solid core. Regardless, I feel better. I don’t like it when things don’t make sense. Although it does give scientists something to do with their time other than hanging out at Comic-Con International.

Afterword

That was a joke about Comic-Con. In my experience, actual scientists really aren’t especially into the nerd culture that lay people always associate with them. I’ve always minded The Big Bang Theory for that. I find the scientists on Better Off Ted far more realistic.

Update (30 April 2015 7:39 pm)

I want to thank RJ for the excellent question about the electric flux of the positively charged atoms and the free electrons. Unfortunately, my astronomy related sources have not really been that up on the issue. This is probably because very few people deal with planetary astronomy. It is of more interest to scientists of the earth. And let’s be honest: the weak magnetic field of Mercury is not nearly as spectacular as the accretion disk of a binary pulsar. But I appreciate the help I got from my old boss Lynn Cominsky. Lynn, ever the high energy astrophysicist sent out some cheeky email to her group, “Any ideas here? I think Mercury is a planet…” But this comment from Kevin was too depressingly true, “Mostly people just wave their hands, and if you press them they run away screaming.” Indeed.

But I’m going to tell you what I think I know. The most important thing, as I mentioned in the comments, is that this current that is created is not the usual kind of current that we talk about in E&M class. We are used to copper wires with free electrons that move through them. But in this case, all the free electrons move to the surface of the core — to get as far away from the positively charge atoms that — if you anthropomorphize objects like I do — menace them. So they are out of the picture and the magnetic field really is created by the positively charged atoms that are moving about inside the liquid core.

The next thing we must understand is that the Coriolis effect is only part of what’s going on. The primary mechanism is the convection cells that are created by the heating of the core (as things get pushed together — think: the sun) and that heat gets dissipated into the mantle. The Coriolis effect then causes the ions to swirl around those convection cells. And that is as far as I’m going to take this.

But I could be wrong. If an actual planetary astronomer happens by and has some insight into this — or if I’m wrong on the physics (and I am drinking a nice red wine right now) — please straighten me out. I would love, for example, to see an actual model of this process. If I were 20 years younger, I would create my own, because this stuff is amazingly cool! But I only have the energy now to talk about some young genius’ model. Anyway, I have movies to over analyze. I have a stack of Tom DiCillo films sitting here and they aren’t going to watch themselves…

Update (2 May 2015 12:30 am)

My discussion above about the electrons fleeing to the surface is wrong. I was thinking of excess charge. There is no electric force that would cause a neutral metal core to send its electrons to the surface. If it did, then an iron ball would have a charge on it. So I’ve done more research and it seems to be moving me in the opposite direction of enlightenment. I’m seeing a lot of Maxwell equations, but without context. (So u is the velocity? Of what?!) I will look into the problem in a week or two and see if I can figure it out after ridding my mind of it. But the bottom line about this article was always that Mercury has a larger magnetic field than we would expect because it has a much larger liquid core than we would expect. As for the dynamo theory: stay tuned.

Teotihuacan and Dynastic Tendencies

Sergio Gómez ChávezThis last week, The Guardian published, Liquid Mercury Found Under Mexican Pyramid Could Lead to King’s Tomb. This has to do with Teotihuacan — a ruin site in modern Mexico that was a large city starting a few centuries BEC, which may have reached a peak population of a quarter million people around 450 CE. But here’s the thing: we really don’t know that much about the people who lived there. We don’t even know who they were, but it is now assumed they were people who emigrated from the south — at least some from the Mayan empire.

For the last six years, archaeologist Sergio Gómez Chávez has been excavating a tunnel under the ruins at the Pyramid of the Sun. At first, the tunnel was thought to be naturally occurring. But it indeed seems to be man made. The further they go in, the more interesting it becomes. They have now found three different chambers, one going down 20 meters below the temple. Along the way, they have found various artifacts: “jade statues, jaguar remains, a box filled with carved shells and rubber balls.” But most recently, they have found liquid mercury — as opposed to mercury ore. As a result, they believe they are on the verge of finding the first “royal tomb” ever found in Teotihuacan. And that’s important:

The discovery of a tomb could help solve the enigma of how Teotihuacan was ruled…

A royal tomb could lend credence to the theory that the city, which flourished between 100 CE – 700 CE[1], was ruled by dynasties in the manner of the Maya, though with far less obvious flair for self-glorification.

There are many other theories. As I said, we don’t know much about these people. But to my mind: of course it was a dynasty! This is just the way humans work. Consider: this is a major — multi-chamber — tunnel dug under the biggest structure in the city. Flair for self-glorification or not, that is the sign of at least one person with a very big ego and the power to feed it over a long period of time. A dynasty is almost required for that, because nothing other than some kind of god-king or God approved king would provide that kind of stability. Otherwise, there would always be someone trying to take over.

But look at our own society. Never has a country be so deluded about the idea of meritocracy as the United States. If many people don’t actually believe it, you would never know it by us constantly talking about it. Yet we could very easily see this country ruled by three members of the same family in the period of just 25 years. And it sure isn’t because they are so brilliant. George H W Bush was a reasonably competent bureaucrat. George W Bush was either incompetent or uninterested in the job. (Or both!) And Jeb Bush was anything but a stellar governor. Regardless, we would be happy if he was as good a president as his father. Humans just naturally fall for this kind of stuff. This is why we continue to allow unconscionable levels of inequality and don’t even pretend to provide “equality of opportunity” to our children.

So I am betting that within a year or two, we will find a “royal tomb” at Teotihuacan. But regardless, it ought to be fascinating what we do find.

Afterword

Want to get really angry? WalMart moved into Teotihuacan and acted more or less how the Islamic State would, Teotihuacan Gets Mickey-Moused.


[1] This date is inaccurate. The Pyramid of the Sun — the biggest structure in the city — was built by 100 CE. So the city was doing quite well for a while before that.

Accidental Scientific Discoveries

Monty Python's Flying Circus Disc 12Penguins. Yes, penguins. What relevance do penguins have to the furtherance of medical science? Well, strangely enough, quite a lot — a major breakthrough maybe. It was from such an unlikely beginning as an unwanted fungus accidentally growing on a sterile plate that Sir Alexander Fleming gave the world penicillin. James Watt watched an ordinary household kettle boiling and conceived the potentiality of steam power. Would Albert Einstein ever have hit upon the theory of relativity if he hadn’t been clever? All of these tremendous leaps forward have been taken in the dark. Would Rutherford ever have split the atom if he hadn’t tried? Could Marconi have invented the radio if he hadn’t, by pure chance, spent years working at the problem? Are these amazing breakthroughs ever achieved except by years and years of unremitting study? Of course not. What I said earlier about accidental discoveries must have been wrong. Nevertheless, scientists believe that these penguins — these comic, flightless, web-footed little bastards — may finally, unwittingly help man to fathom the uncharted depths of the human mind.

Monty Python’s Flying Circus
“A Book at Bedtime”

Rat Flood

Rat FloodIn Chapter Eight of Aunt Julia and the Scriptwriter, Don Federico is an exterminator obsessed with destroying all rats, because he blames himself for allowing rats to eat his baby sister alive. So I decided to look on my phone to see if rats have ever been known to eat humans. They aren’t. Occasionally, they will bite sleeping people. This is probably because they are trying to eat food particles off people. Rats don’t see humans — or any creature — as prey. Rats will eat just about anything, but brown rats are known to prefer a diet much like mine. Favorite foods: “scrambled eggs, macaroni and cheese, and cooked corn kernels.” Least favorite foods: “raw beets, peaches, and raw celery.” But I doubt they were ever offered my excellent peach pie. They are also known to like chocolate.

But all this research brought me to the story of the rat flood — once thought to be a mythical periodical deluge of rats in eastern India. From time to time, the rats would just be everywhere and eat everything. Well, not everything. They didn’t eat the humans. But they might as well have, because it decimated the food crops and stores and caused a famine during those years. And then, just like Keyser Söze: poof, they’re gone. Scientists and political authorities didn’t think it was real, because hey, peasants. But it not only was real, it is.

This happens every 48 years. The Indian states of Mizoram and Manipur are roughly 30% covered in bamboo forest. It has a 48 year ecological cycle called the Mautam. So after the bamboo flowers, it dies and releases all its seeds. Rats like the bamboo seeds and suddenly, they are swimming in them. So they don’t have to spend a bunch of time finding food, so they eat and do that other evolutionarily important behavior: have sex. What’s more, studies indicate that female fertility goes up as does the litter size. Suddenly, eastern India is overflowing with rats.

Of course, it doesn’t matter at this time. The rats have their food supply and they are doing just dandy. It is the following year when there are huge numbers of rats and no more bamboo seeds. So they “head into town” and eat the food of the humans. And there isn’t a lot that the humans can do. This is why it is referred to as the “rat flood.” We have records of this happening in 1862, 1911, 1959, and 2006.

The people of these regions are getting better at dealing with the problem. In 2006, the Indian government sent in the army to help out. They used little bitty guns. No, just kidding. They were there mostly to provide education on how to deal with the coming hordes. Interestingly, as I mentioned above, rats have different food tastes. And there are things they really don’t like. Apparently, they don’t like the smells of turmeric and ginger.

In addition to being a human tragedy — although one we could eliminate if we wanted to with a simple application of resources — it is also a rat tragedy. Because of the excessive food supply, the following year is necessarily a famine of unheard of proportions. And there is really nothing that can be done to stop it. God really is evil.

New Horizons for Pluto

Pluto and CharonThere is exciting Pluto news. Joseph Stromberg over at Vox reported, NASA’s New Horizons Probe Is Visiting Pluto — and Just Sent Back Its First Color Photos. New Horizons left Earth in 2006 and will come within one Earth diameter to Pluto on 14 July. This is very cool, because we really know almost nothing about this bit of solar system debris that many people like to call a planet. In fact, that image on the left is the best picture we’ve ever taken of the little bugger and its biggest moon, Charon. But over the next three months, the images are going to get better and better.

I’ve long been of the opinion that we make far too big a deal of Pluto. When I used to teach astronomy, I would compare it to asteroids and show that there was really nothing that distinguished it from asteroids. But now it just seems to be a notable object in the Kuiper belt — although not even the most massive of the ones we know about. As I said: solar system debris. But that doesn’t mean it isn’t cool. I now find the little stuff orbiting the sun to be the most interesting part of astronomy. It really does allow us to look way back in time.

Of course, the bigger of space debris are less interesting. Anything large enough to become spherical — Eris, 2060 Chiron, 1 Ceres — have their own internal environments. In fact, it is speculated that Pluto might have volcanic activity. I’m sure that (as is usual for these things) there will be complete surprises. As I said, we know so little about this dwarf planet that it could hardly be otherwise. But over the past forty years of unmanned space exploration, we’ve really had to change how we look at the solar system. It is not as we once thought. But that’s even true of the Earth itself.

In addition to imaging devices, New Horizons has other equipment. In particular, the probe will be looking at the gases escaping from the surface of Pluto. The planet is ridiculously cold: between 33 K and 55 K. Even at that upper temperature, nitrogen is a solid. But small amounts of it sublimates to create an incredibly thin atmosphere (roughly one-half-millionth of the Earth’s surface pressure). This atmosphere also contains methane and carbon monoxide. Methane has long been thought to be a marker of life, but we’ve found so much of it in the solar system, I’m not sure what that means anymore. Regardless, it would be hard to imagine life on Pluto, but I wouldn’t rule anything out. Regardless, we should know a lot more in the coming months.

After it flies by Pluto, New Horizons is going to continue on further out into the Kuiper belt. The investigators have not settled on which object they are going to head toward. But this is a very exciting time. In fact, this is certainly the best time yet for astronomy. The advances in our knowledge brought on by terrestrial telescopes really don’t compare to what we are learning today. And it just gets all the more amazing. We know so much more today than we knew just twenty years ago when I was teaching this stuff. Stay tuned!

Water, Global Warming, and Republican Villainy

Water WarBack in the middle of December, my little town here in California had an amazing storm. In a couple of days, we got roughly twice as much rain as we normally do for the whole month. And then January came: no rain the entire month. Normal rainfall for that month is six inches. In February, we got about half the normal five inches. And in March, when we normally get about three and a half inches, we again got no rain at all. None of this is surprising. It’s been going on for years. The idea of “normal rainfall” is now just a sick joke.

So when Jerry Brown stood in the snowless Sierra Nevada to announce a 25% decrease in water use, I was pleased. For years, I’ve been hammering the point that global warming is primarily dangerous because of what it would do to rainfall. And what it does is increase it. The problem is that it changes the rainfall patterns so that we get a net decrease in rainfall over land where we need it. A fellow graduate student when I was in school did a century long correlation between rainfall and temperature and he found that everywhere in the United States other than the northeast the correlation was negative. That is: as it gets hotter, it gets drier. And that’s especially true in places like California and Texas.

George WillI used to take a certain amount of solace from the fact that eventually those evil people who had been denying climate change would be forced to admit that, yes, in fact, they had been wrong. But I was wrong. If George Will and James Inhofe are denying it now, they will always deny it. Like most of the denial community, they are both old. By the time it gets really bad — when California is a ghost state — they will be dead. And I doubt it will matter to them that they left a far worse world for their kids. They left their kids in the hands of God, and God showed his usual level of care for human misery.

The great innovation of American business over the last forty years has been the three month time horizon. The question for the average CEO is not, “What is best for my business over the long term?” It is rather, “What is best for my next quarter bonus?” Given that we’ve allowed the United States to be taken over by the power elite of the business world, it is no surprise that the government now works the same way. What is the long term health of the people of the nation — much less the world — compared to next quarter’s bonus? We know the answer: not a damned thing.

James InhofeThe good news is that as the United States becomes a desiccated shell where nothing grows, Canada looks to become far more productive. If I were in charge of Canada, I would start a massive military buildup. Because you know, the United States isn’t going to sit idly by as its rich suffer, when it has spent all these years consuming 48% of the world’s military expenditures. The US will go to war with Canada under one pretext or another. But what does it matter to me? I’ll be dead. And why should I care about future generations when George Will, James Inhofe, and the whole of the Republican Party doesn’t care? Anyway: we can all drink “freedom.”

Statistics and Penis Sizes

Penis SizesI want to discuss human penis sizes. But I’m going to do my best to be dignified about it. I don’t bring it up for its shock value. It is rather that I noticed something that I think is really interesting about the subject. It all started with an Aaron Carroll post over at The Incidental Economist, Penis Size and Suicide: Two Unrelated Stories. The news about penis sizes is from a research paper in BJUI, Am I Normal? A Systematic Review and Construction of Nomograms for Flaccid and Erect Penis Length and Circumference in Up to 15,521 Men. The remarkable thing is just how unremarkable human penises are.

Let’s start with the facts. The length of erect penises are 5.17 ± 0.65 inches. The circumference of erect penises are 4.59 ± 0.43 inches. What’s interesting here is not the lengths but rather the standard deviations. What we know about a normal distribution is that 95% of all individuals will fall within plus or minus two standard deviations. So 95% of all men have penis lengths between roughly 3.9 and 6.5 inches. If you want to get way out into the weeds of pretty much everyone you’ve ever known, 99.7% of all men have penis lengths between roughly 3.2 and 7.1 inches. The girth of penises is even more constrained: 3.3 and 5.9 inches.

Now you may be wondering where Jonah Falcon fits into all of this. He apparently has a 13.5 inch long penis. Sadly, I have no data on the circumference. But 13.5 inches represents a staggering 13 standard deviations from average. To give you so idea of just how outrageous that is, seven standard deviations represent a one in 400 billion chance. And why did I quote seven and not 13? Because the error function failed in OpenOffice after seven. So basically, the odds are astronomically small.

Does that mean that the statistics from the study are wrong? No. It means that statistics just aren’t that useful when you get way out on the tail of a function. The numbers are probably about right. And what this means is that our general mythology of the penis is wrong. I’m glad to hear that. I wish we would stop mythologizing the penis altogether. I don’t think it is just a sign of my heterosexuality that I think the penis is kind of creepy. But it reminds of a joke by a female comedian decades ago, who said that of course women were bad at math because men were always telling them that this (she indicated about three inches with her fingers) was eight inches. There is undoubtedly much truth to that.

But just as the man with an eight inch penis seems to be mostly a myth (especially if he announces it), so is the idea that women don’t care about penis sizes. According to a study out of UCLA, in one-time sexual encounters, women prefer men with penis of greater girth. For long term relationships, they seem to care more about men with jobs. Be that as it may, you can read all about why this would be (it ain’t complicated) at Medical Daily, What Women Want: Penis Size Matters for One-Night Stands, but Not Long-Term Relationships.

So there you have it: all the statistics you ever wanted to have about penis sizes. As for me, I’m just glad I don’t have to strap my penis down before I go out like Jonah Falcon does. I consider it enough of a nuisance as is.

Bad Science and the End of the World

Stefan LankaMichael Hiltzik reported on a funny story with deadly consequences, A Vaccine Denier Bet $100,000 the Measles Virus “Doesn’t Exist.” He Lost. It’s deadly because people listen to fools like that and don’t get their kids vaccinated and people die. It’s interesting to consider things like the recent French law that allows the government to take down (without due process) websites that supposedly advocate terrorism. Many people here in the US think such laws are valid for the sake of public safety. But we would never be okay shutting down junk science sites that push vaccine and global warming denial — even though they are far more dangerous.

The particular case that Hiltzik wrote about concerns a German virologist Stefan Lanka who has “a long history of pseudoscientific outbursts.” So he offered €100,000 to “anyone who could prove that the measles virus exists.” I know, I know: you didn’t even know there was a debate about this. It sounds kind of like the claim that the sun revolves around the earth. Indeed, the existence of the measles virus is equally settled science. But there will always be cranks around. Lanka is one of them. And if there were billions of dollars at stake in pushing this idea, Lanka would be a really popular guest on Fox News!

A German doctor by the name of David Bardens decided to take the challenge. He put together a bunch of research and submitted it. Lanka, of course, said, “No! No! No!” According to him, Bardens hadn’t proven that viruses exist. Of course, Bardens couldn’t have proved that, because no amount of evidence would ever convince Lanka under normal circumstance, much less when €100,000 was riding on it. So Bardens sued Lanka, and the court found in Bardens’ favor. Needless to say, this is a fantastic outcome. I am so tired of these disingenuous publicity stunts.

Steven Novella at NeuroLogica Blog explained what’s going on in some depth, Yes, Dr Lanka, Measles is Real. It turns out that Lanka’s current position is an outgrowth of his decades long belief that HIV doesn’t exist. Because viruses are so small, scientists have to infer a great deal. You can’t see them in a normal microscope. But so much in science (And life!) is inferred. It’s curious that there are scientists who think this way. This is the same thinking of Christian Scientists who think God cures cancer (which they can’t see) but can’t cure broken bones that they can.

Over time, Lanka seems to have figured out that his reasoning about HIV applies to all viruses. Thus, his more recent crusades on Ebola and measles. In the latter case, Lanka thinks it is psychosomatic. This is ridiculous, of course. Novella exampled:

When you are dealing with something too small to see directly, or a process that is very slow or occurred in the past, we rarely have a single smoking gun that by itself establishes the reality of the phenomenon. Instead, the science is built upon a large body of evidence, direct, indirect, and inferential. In the case of measles, perhaps the ultimate test was the measles vaccine, which clearly works. If measles were a myth, then a vaccine would have been frustratingly impossible to develop.

You see, while testing the measles vaccines, they have done numerous double-blind studies where one group got a placebo. So if measles was just a psychosomatic disease, both the vaccine and the placebo would have worked as well. And they didn’t. Instead, the actual vaccine works remarkably well. But as Novella noted, Lanka is no dummy. He wrote, “Lanka is clearly, in my opinion, a crank, which is a specific flavor of pseudoscientist who makes sophisticated arguments to support a hilariously wrong conclusion.” That sounds about right. I’ve known many people like this. In fact, I may be, in a much more modest way, such a person.

But this business of making such “challenges” are really corrosive. In general the crank designs a challenge in such a way that it can never be met. And then they can go around for decades saying, “No one has ever met my challenge of proving that measles exist!” And in the US, I’m afraid this case would have gone very differently, as long as Lanka had enough money. As it is, it may still go differently, because he is appealing the decision. And as Novella wrote, “If they win the case on legal technicalities, they will generally claim they won on the merits, and will use the judgement as vindication of their pseudoscience. People who base their career on bending reality will bend reality.” We’ve seen this dynamic again and again in global warming in this country. It makes me despair.

Seth Meyers Fails on Global Warming

Seth MeyersTuesday night, Ted Cruz was on Late Night With Seth Meyers. It didn’t go well. I’m not a fan of Seth Meyers. He’s always reminded me of another Weekend Update alumni: Dennis Miller. A lot of people have forgotten this, but Miller was once an outspoken liberal. But as with Meyers, you could always tell that he wasn’t serious about it — he clearly hadn’t thought through his political positions. So I wasn’t the least bit surprised when Miller turned conservative. In fact, it’s better now: he has a greater grasp on what conservatives think. I’m not saying that Meyers is going to turn conservative, but his liberalism is razor thin.

Even before Cruz got a chance to talk, Meyers said something that annoyed me. After they discussed Cruz’s “world’s on fire” rhetoric, Meyers said, “At first I got excited, because I thought you were coming around on global warming… Because I think the world’s on fire literally.” But clearly, the world is not on fire. It portrays the issue in a casual and hyperbolic way that makes for easy pickings by conservatives. And in fact, Cruz used just such an attack when he later mentioned that it had been snowing in New Hampshire. I know: that’s stupid. But it is a perfectly acceptable counter to the stupid claim that the world is literally on fire from global warming.

One thing that Cruz said that made me want to bang my head against the wall was a total distortion of linguistic history. He said, “It’s why, you remember how it used to be called global warming, and then magically the theory changed to climate change?” Actually, that was the result of a propaganda campaign. According to The Guardian in 2003, “The phrase ‘global warming’ should be abandoned in favor of ‘climate change,’ [conservative branding expert] Mr [Frank] Luntz says…” One of the things that the Republican Party is really good at is branding, and I hate that Ted Cruz can go on national television and claim words that his party got changed are actually due to a changing understanding of science.

Cruz continued, “The reason is it wasn’t warming. But the computer models still say it is, except the satellites show it’s not.” He claimed earlier that the last 17 years of satellite temperature data indicated “zero warming, none whatsoever.” Meyers’ response to this was nothing at all. He didn’t even know enough to say that Cruz was cherry picking data. The audience was left thinking, “Wow! I guess there really is a debate!”

There is no debate:

Satellite Temperature Measurements

That’s from an excellent article by Tim McDonnell at Mother Jones, Scientists: Ted Cruz’s Climate Theories Are a “Load of Claptrap.” It represents an average increase in atmospheric temperatures of 0.22° F per decade for the last three and a half decades. Of course, it’s important to remember that these data are some of the worst that we have — and they still show a distinct rise in temperature. But importantly: we don’t especially care about total global atmospheric temperatures; we care about surface temperatures. One thing that falls out of the simplest of climate models is that while the lower atmosphere (troposphere) warms, the upper atmosphere (stratosphere) cools. So looking at the overall temperature will tend to understate the rise in surface temperature.

What Cruz said was not technically false. You might wonder: why did he pick 17 years and not, say, 20? It’s because 17 years ago, 1998, was one of the warmest years on record (the warmest of the 20th century). Thus, by starting there, the upward trend is small — I assume within the margin of error, because the errors on satellite temperature measurements are large. You can see this very clearly by looking at the yearly average surface temperatures provided in McDonnell’s article:

Yearly Average Surface Temperatures

I don’t mind people like Seth Meyers getting into these debates. But given the power they have to amplify voices, they have a responsibility to know what they are talking about. In this case, Meyers had absolutely nothing to say other than that he believes in global warming. Did he really think Ted Cruz didn’t have talking points about this? If you watch the video, you can see where he pauses slightly after mentioning the snow in New Hampshire. He is used to the audience cheering after he says that. Meyers did liberalism generally, and science specifically, great harm Tuesday night. Maybe it would be best if he just turned into a conservative.

Afterword

This is a great one minute long video that explains the difference between climate and weather in a really clever way. Check it out:

Survivorship Bias or Why the Rich Feel Poor

Fooled by RandomnessMarc lives on Park Avenue in New York City, with this wife Janet and their three children. He makes $500,000 a year, give or take a boom or a recession — he does not believe that the recent spurt in prosperity is here to last and has not mentally adjusted yet to his recent abrupt rise in income. A rotund man in his late forties, with spongy features that make him look ten years older than his age, he leads the seemingly comfortable (but heckled) life of a New York city lawyer. But he is on the quiet side of Manhattan residents. Marc is clearly not the man one would expect to go bar-hopping or attend late night Tribecca and Soho parties. He and his wife have a country house and a rose garden and tend to be concerned, like many people of their age, mentality, and condition, with (in the following order) material comfort, health, and status. Weekdays, he does not come home until at least 9:30 pm and, at times, he can be found in the office at close to midnight. By the end of the week, Marc is so fatigued that he falls asleep during their three hour drive to “the house”; and Marc spends most of Saturday lying in bed recovering and healing…

Marc’s strategy of staying in Manhattan may be rational, as his demanding work hours would make it impossible for him to commute. But the costs on his wife Janet are monstrous. Why? Because of their relative nonsuccess — as geographically defined by their Park Avenue neighborhood. Every month or so, Janet has a crisis, giving in to the strains and humiliations of being snubbed by some other mother at the school where she picks up the children, or another woman with larger diamonds by the elevator of the co-op where they live in the smallest type of apartments (the G line). Why isn’t her husband so successful? Isn’t he smart and hard working? Didn’t he get close to 1600 at the SAT? Why is this Ronald Something whose wife never even nods to Janet, worth hundreds of millions when her husband went to Harvard and Yale and has such a high IQ, and has hardly any substantial savings?

We will not get too involved in the Chekovian dilemmas in the private lives of Marc and Janet, but their case provides a very common illustration of the ecomtional effect of survivorship bias. Janet feels that her husband is a failure, by comparison, but she is mis-computing the probabilities in a gross manner — she is using the wrong distribution to derive a rank. As compared to the general US population, Marc has done very well, better than 99.5% of his compatriots. As compared to his high-school friends, he did extremely well, a fact that he could have verified had he had time to attend the periodic reunions, and he would come at the top. As compared to the other people at Harvard, he did better than 90% of them (financially, of course). As compared to his law school comrades at Yale, he did better than 60% of them. But as compared to his co-op neighbors, he is at the bottom! Why? Because he chose to live among the people who have been succesful, in an area that excludes failure. In other words, those who have failed do not show up in the sample at all, thus making him look as if he were not doing well at all. By living on Park Avenue, one does not have exposure to the losers, one only sees the winners. As we are cut to live in very small communities, it is difficult to assess our situation outside of the narrowly defined geographic confines of our habitat. In the case of Marc and Janet, this leads to considerable emotional distress; here we have a woman who married an extremely successful man but all she can see is comparative failure, for she cannot emotionally compare him to a sample that would do him justice.

—Nassim Nicholas Taleb
Fooled by Randomness

Birthday Post: Cotton Gin

Cotton GinOn this day in 1794, the cotton gin was born. Well, not born. But that was the day that Eli Whitney got the patent for it. The cotton gin had terrible social consequences for America. It reminds me of a story I once heard about Leonardo da Vinci inventing some labor saving device designed to make life easier on the workers. But all it actually accomplished was to put a bunch of workers out of work. In the long-term, that kind of thing is good for workers — in theory. But in the short-term, it sucked. The direct effect of the cotton gin was to require fewer slaves to separate cotton. But the indirect effect was to greatly increase the need for slaves in other areas of cotton production.

The cotton gin gave American slavery a great boost just when it needed it. Of course, that’s a lot to lay at the feet of one invention. As we know from the book The Half Has Never Been Told: Slavery and the Making of American Capitalism, the slavery industry used slaves just the way regular industries did: constantly pushing slaves for more and more productivity. So who knows? Maybe the slaves just would have been driven to work faster separating the cotton. The main takeaway here is that technologies have unpredictable consequences — and they are usually bad.

But happy birthday cotton gin!