Week-ending squirrels

January 22, 2016 • 2:45 pm

Although yesterday was Squirrel Appreciation Day, I couldn’t resist ending the week with this swell squirrel photo sent by Antti Rönkä.  He sent some information, too:

I have attached a photo of a European Red Squirrel (Sciurus vulgaris) that  stuck itself  into a bird feeder. The photo was taken recently in Oulu, northern Finland, at our backyard.

Squirrel

And reader Taskin pointed me to “Break’s” Facebook video of a squirrel grabbing a camera and running off with it (click on the screenshot to see it). It’s a truly stupendous piece of video, showing you things from a squirrel’s eye view; and it’s funny as hell.

This is great on several levels. You get to see his little legs going like mad, he goes up a tree and films other squirrels, you can see the camera guy trying to figure out how he can get it back, there are bells ringing in the background, it’s Squirrel Appreciation Boxing Day!

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Convergent migration strategies in birds (an excuse to show a cool bird gif)

January 22, 2016 • 12:45 pm

There’s a new paper in the Proceedings of the Royal Society (B) by Frank La Sorte et al. about migration routes surveyed in 118 species of birds. I’ve only scanned it, as this is an excuse to show you a lovely new gif of bird migrations. But first the paper (reference at bottom; free download) and its abstract, which should be understandable by the non-scientist:

Abstract:

Migration is a common strategy used by birds that breed in seasonal environments. Selection for greater migration efficiency is likely to be stronger for terrestrial species whose migration strategies require non-stop transoceanic crossings. If multiple species use the same transoceanic flyway, then we expect the migration strategies of these species to converge geographically towards the most optimal solution. We test this by examining population-level migration trajectories within the Western Hemisphere for 118 migratory species using occurrence information from eBird. Geographical convergence of migration strategies was evident within specific terrestrial regions where geomorphological features such as mountains or isthmuses constrained overland migration. Convergence was also evident for transoceanic migrants that crossed the Gulf of Mexico or Atlantic Ocean. Here, annual population-level movements were characterized by clockwise looped trajectories, which resulted in faster but more circuitous journeys in the spring and more direct journeys in the autumn. These findings suggest that the unique constraints and requirements associated with transoceanic migration have promoted the spatial convergence of migration strategies. The combination of seasonal atmospheric and environmental conditions that has facilitated the use of similar broad-scale migration strategies may be especially prone to disruption under climate and land-use change.

That’s not an earth-shattering finding, I think, but still useful.

Here’s a figure showing similarity of migration routes, with most over land, but when it’s over the ocean they tend to go in the same direction (i.e. clockwise or counterclockwise). I won’t report further on the paper as I’m struggling with a new PNAS paper on the “readiness potential” for physical events (i.e., stuff relevant to free will), but have a look at this:

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From paper: Figure 1. (a) Population-level migration trajectories within the Western Hemisphere at a daily temporal resolution for 118 migratory bird species for the combined period 2002– 2014. (b) Migration trajectory classification within 18 latitudinal bands for the 118 species with each point defining species’ annual centroid within that band (note the use of transparent points). From the 118 species, 53 were classified as clockwise, 14 as anticlockwise, and 51 as repeated.

There’s a nice summary of the article at the Cornell eBird site, but this is all prelude so I can show you this lovely gif, an animation of the diagrams above. As the legend says, “Each dot represents a single bird species; the location represents the average of the population for each day of the year (see paper for a more precise explanation of the “average location”). Here’s a key to which species is which.” The concordant movement of the dots, each a single species, shows the convergent migration that’s the subject of the paper:

Voilà:

la-sorte-map-118-spp-64-725

h/t: Lauren

_______

LaSorte, F. A., D. Finke, W. Hochachka, and S. Kelling. Convergence of broad-scale migration strategies in terrestrial birds. Proc. Roy. Soc. B: vol 283: DOI: 10.1098/rspb.2015.2588

John Gray: an atheist-hating atheist

January 22, 2016 • 10:45 am

John Gray is an English writer, philosopher, and atheist—one of those atheists who really, really hates New Atheists, doesn’t think much of science, and positively loves religion. I’ve dissected his pieces before on this website (see this collection, for instance), and, truth be told, I can barely muster up the energy to discuss any more of his lame and repetitive articles. But I’ll take up the cudgels just one more time, if for no other reason than to tell him (for he’ll surely see this) that #NotAllAtheists go alone with his mean-spirited and generally mindless lucubrations. (If you think I’m exaggerating the “mean-spirited” part, see here.)

At any rate, his article in Wednesday’s New Statesman, “Why humans find it hard to do away with religion,” is ostensibly a review of a recent OUP book by Dominic Johnson, God is Watching You: How the Fear of God Makes Us Human. I say “ostensibly,” because Gray’s piece is his usual jeremiad against atheism. I haven’t read Johnson’s book, so I’ll discuss only what Gray says about religion, much of which seems to parrot and agree with what’s in Johnson’s book.

If you’ve read Gray’s pieces before, you’ll be familiar with his anti-atheist tropes, so I’ll be as brief as I can in laying out his thesis. His main points are three:

a. Religion is an evolved phenomenon, and it evolved because it helped society cohere. (Indented quotes are Gray’s.) It’s not absolutely clear whether by “evolved” Gray means “culturally” or “genetically” evolved, since you can discern both forms of change in his arguments. But here’s what he thinks, apparently agreeing with Johnson:

Human beings never cease looking for a pattern in events that transcends the workings of cause and effect. No matter how much they may think their view of the world has been shaped by science, they cannot avoid thinking and acting as if their lives are subject to some kind of non-human oversight. As Johnson puts it, “Humans the world over find themselves, consciously or subconsciously, believing that we live in a just world or a moral universe, where people are supposed to get what they deserve. Our brains are wired such that we cannot help but search for meaning in the randomness of life.”

Here he implies biological evolution:

But what if belief in the supernatural is natural for human beings? For anyone who takes the idea of evolution seriously, religions are not intellectual errors, but ­adaptations to the experience of living in an uncertain and hazardous world.

Such adaptations would seem to be genetic ones, given Gray’s invocation of the “idea of evolution”—surely organic evolution, since everyone takes “evolution as cultural change” seriously.

But here he might be talking about both genetic and cultural evolution:

Reward and punishment may not emanate from a single omnipotent deity, as imagined in Western societies. Justice may be dispensed by a vast unseen army of gods, angels, demons and ghosts, or else by an impersonal cosmic process that rewards good deeds and punishes wrongdoing, as in the Hindu and Buddhist conception of karma. But some kind of moral order beyond any human agency seems to be demanded by the human mind, and this sense that our actions are overseen and judged from beyond the natural world serves a definite evolutionary role. Belief in supernatural reward and punishment promotes social co-operation in a way nothing else can match. The belief that we live under some kind of supernatural guidance is not a relic of superstition that might some day be left behind but an evolutionary adaptation that goes with being human.

Regardless, it’s still not clear how religion came to be. Social cooperation is one reason, but so is Pascal Boyer’s notion of “agency”—the desire of an ignorant and superstitious species to attribute agency to impersonal events. Another explanation is simply fear of death: we’re the only species whose members know they’re mortal, and much of religion may be an attempt to deny that. Or these reasons could all hold. The fact is that whatever purposes religion serves now may not be the reasons it arose in the first place. And why it arose may be simply a byproduct of our ignorance as early hominins, or of other evolved traits like the attribution of agency as a way to help you survive.

Gray cites psychology experiments showing that religious people are more generous in “dictator games” than are nonbelievers, but adds as well that such generosity seems to come from fear of punishment. In other words, Gray admits that religion holds society together largely through fear of both worldly ostracism and, especially, divine retribution.

And that brings up an important question. Gray is an atheist, so he doesn’t believe in religious myths, or even God. So is it useful for society to be held together by mass belief in pure fiction? Apparently, yes:

Unlike practitioners of polytheism, who seek and find meaning in other ways, Christians have found sense in life through a mythical narrative in which humankind is struggling towards redemption. It is a myth that infuses the imagination of countless people who imagine they have left religion behind. The secular style of modern thinking is deceptive. Marxist and liberal ideas of “alienation” and “revolution”, “the march of humanity” and “the progress of civilisation” are redemptive myths in disguise.

So false beliefs can motivate good morality—as opposed to atheist “myths” that are not only false, but don’t promote comity or morality. Gray doesn’t mention secular humanism, or point out that purely secular societies behave at least as morally, if not more so, than religious ones. Where would you prefer to live: Saudi Arabia or Denmark? In a Mormon enclave, where Christianity regulates everthing, or Sweden? In the Catholic Phillipines or in France (and don’t say that I’m deciding this way because the Philippines are poorer, for that’s one reason they’re so Catholic!)? And this brings us to Gray’s second point:

b. New Atheism is a doctrine promulgated by simple people, and it’s based just as much on faith as is religion. To wit:

[The idea that religion is an evolutionary adaptation is] a conclusion that is anathema to the current generation of atheists – Richard Dawkins, Daniel Dennett, Sam Harris and others – for whom religion is a poisonous concoction of lies and delusion. These “new atheists” are simple souls. In their view, which derives from rationalist philosophy and not from evolutionary theory, the human mind is a faculty that seeks an accurate representation of the world. This leaves them with something of a problem. Why are most human beings, everywhere and at all times, so wedded to some version of religion? It can only be that their minds have been deformed by malignant priests and devilish power elites. Atheists have always been drawn to demonology of this kind; otherwise, they cannot account for the ­persistence of the beliefs they denounce as poisonously irrational. The inveterate human inclination to religion is, in effect, the atheist problem of evil.

That’s just bogus; people like Dennett and Dawkins have spent a lot of time thinking about why people are religious, and the conclusion is not invariably that their minds are deformed by “malignant priests and devilish power elites.” That may be one way religion is perpetuated in some places, but that’s a different question from what Gray is posing, which is how religion got started in the first place. And talk about “simple souls”—what an ad hominem argument! The simple souls are in fact the religious ones, those who grasp at simple myths of old men in the sky rather than grapple with the complexities of evolution and culture. Which soul is simpler: that of Dan Dennett or that of a snake-handling preacher in West Virginia? How dare someone like Gray describe people like Dawkins, Dennett, and Harris in that way? I’d put any of their intellects against Gray’s (clearly a “complicated soul”) any day.

Gray goes on with the “evangelical atheism” canard:

For some, atheism may be no more than a fundamental lack of interest in the concepts and practices of religion. But as an organised movement, atheism has always been a surrogate faith. Evangelical atheism is the faith that mass conversion to godlessness can transform the world. This is a fantasy. If the history of the past few centuries is any guide, a godless world would be as prone to savage conflicts as the world has always been. Still, the belief that without religion human life would be vastly improved sustains and consoles many a needy unbeliever – which confirms the essentially religious character of atheism as a movement.

Surrogate faith? Haven’t we gotten past that yet? Or does Gray not know what “faith” means in religion? Yes, many atheists believe that the world would be better off without religion, but there’s evidence for that: not only the divisiveness that plagues our world at present and the malevolence of many faiths (does Gray really think that a world without Catholicism or Islam would be palpably worse?), but the observation of what happens in societies that reject religion and rely on Enlightenment principles of reason—societies like those of northern Europe. If Gray were right, these societies would be markedly worse off than religious ones, for they lack that religious glue that causes people to cohere. But, of course, places like Denmark, Iceland, Sweden, Canada, and the Netherlands, are not only very well off using sociological scales, but are some of the happiest societies in the world.  Religious Palestine, Uganda, India, and Tunisia—forget it. Deeply unhappy lands.

And we mustn’t forget Pinker’s argument, forcefully made, that violence is declining in society over time. One of the reasons he gives is the displacement of superstition by reason and Enlightenment values. If the history of the past few centuries is any guide, the more godless the world becomes, the more moral and less violent it becomes.

Two more points. Gray, who apparently knows little about evolution, rejects the proposition that human minds evolved to find out what’s true about the world. In this he echoes the argument of Alvin Plantinga that naturalism can’t explain humans’ constant seeking of the truth, for there’s no evolutionary payoff for such a search (my emphasis in paragraph below):

Certainly there is an element of comedy in the new atheist mix of proselytising Darwinism and ardent rationalism. There is no way in which a model of the mind inherited from Descartes and other rationalist philosophers can be squared with the findings of evolutionary biology. If you follow Darwin in thinking of human beings as animals that have evolved under the pressures of natural selection, you cannot think that our minds are primed to seek out truth. Rather, our ruling imperative will be survival, and any belief that promotes this will have a powerful attraction. This may be why we are so anxious to discern a pattern in the drift of events. If there is none, our future will depend largely on chance – a dispiriting prospect. The belief that our lives unfold under some kind of supernatural direction offers a way out, and if this faith enables us to live through disaster, that it may be groundless is irrelevant. From an evolutionary perspective, irrational belief isn’t an incidental flaw in human beings. It has made us what we are. In that case, why demonise religion?

I discuss this argument on pp. 177-185 in Faith Versus Fact. And it’s clear that for many purposes, our minds have indeed evolved to find out what’s true about our world. For finding out what’s true—where the animals are, how they behave, what plants are safe to eat, what other members of your group are like—will very often promote the survival of your genes. Does Gray not see any connection at all between finding out what’s real and one’s survival? If not, he’s more ignorant than I thought.

But of course our minds are limited by evolution as well, and, as Trivers has shown, sometimes it pays us to deceive others, or even ourselves, so we’ll often believe stuff that is wrong. And there are, of course, things we believe, based on experience with other things, that are also wrong: that a severed tetherball will fly off in a spiral, that we saw things we never did, and that we ourselves are generally better than other people. No evolutionist thinks that natural selection will always lead us to believe what is true, for some of the “adaptive” behaviors and beliefs that have led us to truth also have spandrels that cause us to believe things that are untrue. Optical illusions are one example.

And why demonize religion? That brings us to Gray’s final point:

c. The Good “Old Atheists” were better than the “simple” New Atheists because they made fun of religion but didn’t try to do away with it. These “Old Atheists” invariably include Mencken and Camus, but often leave out people like Ingersoll and Russell—people who were not only atheists but anti-theists. Ingersoll and Russell, for instance, constantly pointed out the dangers of faith, and touted a world without God. Gray’s big hero, though, is H. L. Mencken:

 Atheism need not be an evangelical cult. Here and there one finds thinkers who have truly left redemptive myths behind. The American journalist and iconoclast H L Mencken was a rambunctious atheist who delighted in lambasting religious believers; but he did so in a spirit of mockery, not out of any interest in converting them into unbelievers. Wisely, he did not care what others believed. Rather than lamenting the fact of incurable human irrationality, he preferred to laugh at the spectacle it presents. If monotheism was, for Mencken, an amusing exhibition of human folly, one suspects he would have found the new atheism just as entertaining.

I am trying to understand the mindset that leads one to say, “Wisely, he did not care what others believed.” When you think about it, that’s a reprehensible and selfish thing to say. Why do you care what others believe? Because beliefs lead to actions, and sometimes those actions are harmful to other people and society as a whole. Would Gray say the same thing about politics: “We shouldn’t care what Republicans believe”?

Mencken was a satirist and a sybarite, not a social activist. He preferred to mock religion before a fire in his Baltimore home, comfortably ensconced behind a schooner or three of beer. In contrast, Russell and Ingersoll were activists, and wanted to do something about religion’s harms. Following Gray’s advice, let’s by all means just laugh at the Republicans, but let us not try to do anything about their views on promulgating guns, banning abortion, and demonizing women, gays, and immigrants. After all, as philosopher Gray tells us, that’s the WISER thing to do.

I’ve also pondered at length why an atheist philosopher who clearly thinks highly of his own intellectual acumen nevertheless promulgates the Little People’s Argument. Apparently Gray doesn’t need religion to be a good person, but believes that nearly everyone else does. What a low opinion of human nature, and what a recipe for inaction!

h/t: Rodney

Google Doodle honors peppermeister Wilbur Scoville

January 22, 2016 • 8:45 am

Today’s Google Doodle, an animation (access it by clicking on the screenshot blow), honors the 151st birthday of Wilbur Scoville (1865-1942), an American chemist. In 1912, Scoville devised the “Scoville Organoleptic Test,” a way to quantify the spiciness of chile peppers. Now, of course, breeders all over the world compete to grow the spiciest chiles with the highest Scoville rating.

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Here’s a video of the animation; Google’s story about the making of the Doodle is here.

In 2013 the New Yorker had a nice article, “Fire-Eaters” (free online) about breeders’ informal competition to grow the hottest chile. It ends with the teaser that Butch Taylor, a Louisiana plumber who breeds chiles as a hobby, was producing a really wicked one:

Before we came inside, Taylor had shown me his greenhouse, where he tends his most precious plants. A single bush dominated the small hut. Hanging from its branches were an assortment of pods, some of them deep red and some of them a faint green. The plant, which was not yet stable, was the third generation of an accidental cross of a 7-Pot Jonah and, most likely, a Trinidad Scorpion Butch T. Taylor was calling it the WAL—the Wicked-Ass Little 7-Pot. He shook a branch, unleashing a swarm of flies, and picked a pod from the stem. “Just off the top of my head, the first one I tasted, I’d say two million Scovilles,” he said. “But it may just be a freak of nature. You get those now and then.”

Below is Wikipedia’s diagram of the Scoville scale, with the Carolina Reaper still holding out over the Trinidad Scorpion Butch T pepper. Here’s how the ratings are achieved, a combination of objective methodology and subjective assessment (unavoidable when it comes to matters of taste perception):

In Scoville’s method, an exact weight of dried pepper is dissolved in alcohol to extract the heat components (capsinoids), then diluted in a solution of sugar water. Decreasing concentrations of the extracted capsinoids are given to a panel of five trained tasters, until a majority (at least three) can no longer detect the heat in a dilution. The heat level is based on this dilution, rated in multiples of 100 SHU.

A weakness of the Scoville Organoleptic Test is its imprecision due to human subjectivity, depending on the taster’s palate and their number of mouth heat receptors, which varies greatly among people. Another weakness is sensory fatigue the palate is quickly desensitised to capsaicins after tasting a few samples within a short time period. Results vary widely, ± 50%, between laboratories.

Notice that jalapeño peppers, which most people consider hot, come in at a wimpy 1000-4000 Scoville units.

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The active ingredient in chiles—the stuff that makes them hot—is the compound capsaicin, although other related compounds (“capsaicinoids”) contribute to the heat as well. Below is the diagram of a capsaicin molecule; it and its relatives probably evolved as protective compound in wild chiles, deterring attacks by herbivores and fungi. Humans have taken advantage of that protection by simply breeding for more and more of the hot metabolites.

Apparently birds, who disperse wild pepper seeds, don’t react to capsaicinoids, while mammalian herbivores, who would crunch the seeds and destroy the plant’s ability to pass on its genes, react adversely. This is probably not a case of true coevolution; I suspect that plants producing fleshy bits containing capsacinoids (seeds don’t themselves contain the compounds) left more genes than those that didn’t simply because birds already lacked the receptors for the compounds while mammals had them.

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Capsaicin

There is in fact, a Wikipedia article about Guinness’s Official World’s Hottest Pepper, the Carolina Reaper, also known as HP22B, bred in South Carolina and coming in at a scorching 1,569,300 Scoville units.  (One was rated at 2.2 million Scoville Units.) Here’s what they look like:

Carolina_Reaper_pepper_pods

You can buy seeds and Reaper Hot Sauce from the PuckerButt Pepper Company (sauce here; hottest seeds here). I dare any reader to try one of these (warning: do not ingest “Reaper Venum” directly):

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If you want something hotter, there are pure capsicum extracts, hotter than the hottest pepper available, here, as well as a panoply of hot sauces having various degrees of tongue-destruction.

Oh, and here’s Scoville himself, a man who had no idea what monster he’d created:

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Readers’ wildlife encounters

January 22, 2016 • 7:30 am

Instead of posting Readers’ Wildlife Photos today, I have a YouTube video about a cockatiel (Nymphicus hollandicus), and one reader’s experience with those birds.

First, reader Diane G. called my attention to a Guardian column from last year by Grrlscientist about cockatiels, “This talented parrot thinks he’s a songbird.” After giving some information about the species, Grrlscientist gets onto the really good stuff—its famous vocal mimicry:

Male cockatiels (but not females) can learn to whistle a variety of songs — which I think of as being their true talent — and can also learn to mimic the human voice. An interesting — and very unusual for parrots — trait of cockatiels is that their ability to learn new sounds is limited by age. Most parrots learn to produce new sounds throughout their lives — a character known as “open ended learning” in songbirds. But in my experience, cockatiels’ song learning abilities diminish rapidly after they’ve passed their first birthday. In songbirds, this trait is known as “closed ended learning”.

The cockatiel in the above video is truly remarkable because the song he is whistling is quite complex and long, yet he produces it effortlessly. Someone invested a lot of effort into training that little parrot to whistle that song! And as if that isn’t remarkable enough, he also whistles his song whilst being accompanied on piano!

I think that the delightful musical piece that the cockatiel is whistling is the theme from the Japanese fantasy film, “My Neighbor Totoro”, but I am certain you’ll correct me if I’m wrong. [Readers can weigh in here.]

And here’s the vido, apparently from Russia, which I find quite remarkable:

When I remarked on that amazing performance, Diane G. added her own experience owning these birds, which includes a cool tale:

Per Grrl, “Someone invested a lot of effort into training that little parrot to whistle that song! And as if that isn’t remarkable enough, he also whistles his song whilst being accompanied on piano!”
My male ‘tiels would pick up lots of sounds automatically, like the sound of the back-door opening which would freak me out when they’d imitate it while I was all alone in the house. . . And they’d learn whistles quite easily, though longer ones took more effort. I remember once when my husband, who gets up at the crack of dawn, let the dogs out, only to have one of them get skunked pretty badly. . . so of course, he comes and wakes me up. The last thing I wanted to hop out of bed and do was wash a stinky dog, so I thought I’d just confine it to the mudroom until I wanted to get up “officially.”  Theodore, the cockatiel whose cage was also in the mudroom, didn’t think very highly of that idea, and he started whistling reveille* over and over at the top of his lungs, which in that case I think meant ‘get this *expletive* smelly dog outta here!!’  Suffice it to say I ended up not returning to bed…

*Note: “Reveille is the wake-up called played by bugles to American soldiers in the morning. It’s jarring, and you can hear it here.

If you’ve had a cockatiel (and I know some of you have), weigh in below. Musicians are also welcome to assess the bird’s performance.

 

Superfluous quotation marks

January 22, 2016 • 7:00 am

One of my first experiences with superfluous quotation marks was as a young assistant professor at the University of Maryland. There was to be a post-seminar social, and the chairman sent around a notice announcing that “coffee” and “cookies” would be served. Were these faux comestibles, I wondered? Now I encounter superfluous quotation marks all the time, and of course there’s a website for these things: The “Blog” of “Unnecessary” Quotation Marks. It’s a hoot.

Here’s my addition: the email I received from the company to which the Indian embassy outsources its visa program (a screenshot from my phone):

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I wonder what “received” means when it’s in quotes! Are they pulling my leg?