You know, I’m not going to stop making these spider videos, because they’re awesome

I’ve got these spider babies that I now know are exactly 8 days old after they were laid in their mamma’s egg sac, and we’re seeing the transition from spherical egg to lightly sculpted leggy thing wrapped around a spherical ball. So I took some pictures. I also tried putting them on my compound scope and seeing if I could visualize cells in the tissue — it didn’t work. The spider embryos are thick and round and opaque, and further, I was just looking at them dry — I’ve got to work on getting them in a better medium and improving the optics.

Also, the more bloodthirsty of my followers have asked me to catch the babies in the act of feeding, so just to appease them (please don’t hurt me!), I’ve also included a short clip of what happens when I dump a bunch of flies into a tube of baby spiders.

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When will this genetic determinism dinosaur die already?

Robert Plomin, a psychologist, has a new book out, and it looks like he intentionally picked the title to a) make him look stupid, b) align with the alt-right, or c) stir up controversy for sales, because jeez, it’s possibly one of the most backward, unaware, ignorant titles yet: Blueprint: How DNA Makes Us Who We Are. What do you do with a book that has a title that is so wrong?

I guess you ask Nathaniel Comfort to review it.

And yet, here we are again with Blueprint, by educational psychologist Robert Plomin. Although Plomin frequently uses more civil, progressive language than did his predecessors, the book’s message is vintage genetic determinism: “DNA isn’t all that matters but it matters more than everything else put together”. “Nice parents have nice children because they are all nice genetically.” And it’s not just any nucleic acid that matters; it is human chromosomal DNA. Sorry, microbiologists, epigeneticists, RNA experts, developmental biologists: you’re not part of Plomin’s picture.

Crude hereditarianism often re-emerges after major advances in biological knowledge: Darwinism begat eugenics; Mendelism begat worse eugenics. The flowering of medical genetics in the 1950s led to the notorious, now-debunked idea that men with an extra Y chromosome (XYY genotype) were prone to violence. Hereditarian books such as Charles Murray and Richard Herrnstein’s The Bell Curve (1994) and Nicholas Wade’s 2014 A Troublesome Inheritance (see N. Comfort Nature 513, 306–307; 2014) exploited their respective scientific and cultural moments, leveraging the cultural authority of science to advance a discredited, undemocratic agenda. Although Blueprint is cut from different ideological cloth, the consequences could be just as grave.

It seems that Plomin believes GATTACA was a documentary for a utopia. You might be wondering what the consequences could be.

Ultimately, if unintentionally, Blueprint is a road map for regressive social policy. Nothing here seems overtly hostile, to schoolchildren or anyone else. But Plomin’s argument provides live ammunition for those who would abandon proven methods of improving academic achievement among socio-economically deprived children. His utopia is a forensic world, dictated by polygenic algorithms and the whims of those who know how to use them. People would be defined at birth by their DNA. Expectations would be set, and opportunities, resources and experiences would be doled out — and withheld — a priori, before anyone has had a chance to show their mettle.

To paraphrase Lewontin in his 1970 critique of Jensen’s argument, Plomin has made it pretty clear what kind of world he wants.

I oppose him.

An argument from consequences is a fallacy, but the real meat of the review is that Plomin’s evidence is bad, that he consistently misinterprets it, and that he’s ignorant of the broader scope of factors affecting intelligence. It’s also bad science in that he clearly has a desired outcome and is selectively picking his evidence to validate it.

When someone abuses science to justify maintaining their privilege, that’s a dystopian future for the rest of us, and I’ll oppose it too.

Panic in Spider City

I didn’t update yesterday, and nothing much today either, because I’m new to this spider business and have lots to learn — like planning ahead. I’ve got all these vials full of spider babies right now, and they have eaten all of my flies, every one. I set up four more bottles of flies a bit more than a week ago, and they’re at the stage where I’ve got lots of pupae but the adults haven’t eclosed yet, which should happen any day now. But it means my babies are hungry right now, and I’ve got nothing to give them.

I’m a bad spider daddy.

I set up a bunch more fly bottles today and will start staggering production every 3 or 4 days, but wow, when you’ve got a few hundred spiderlings, the logistics of keeping them supplied with flies is a little more involved than I expected. Also, I don’t quite have the rhythm yet. The goal is to raise just enough to maintain a small colony at a stable productive size, and right now I’m producing to excess because I’m uncertain about mortality and how quickly they’ll be consistently reproducing. At a guess, they reproduce a lot faster than I expected!

From now on, I’m going to send all those obnoxious Peterson cultists to Adam Rutherford

I hope he enjoys them, because I’m more than a little tired of those obtuse wankers. Rutherford is writing about what makes humans unique, and isn’t shy about pointing out that most of the pop sci claims are nonsense.

Because sex and gender politics are so prominent in our lives, some look to evolution for answers to hard questions about the dynamics between men and women, and the social structures that cause us so much ire. Evolutionary psychologists strain to explain our behaviour today by speculating that it relates to an adaptation to Pleistocene life. Frequently these claims are absurd, such as “women wear blusher on their cheeks because it attracts men by reminding them of ripe fruit”.

Purveyors of this kind of pseudoscience are plenty, and most prominent of the contemporary bunch is the clinical psychologist and guru Jordan Peterson, who in lectures asserts this “fact” about blusher and fruit with absolute certainty. Briefly, issues with that idea are pretty straightforward: most fruit is not red; most skin tones are not white; and crucially, the test for evolutionary success is increased reproductive success. Do we have the slightest blip of data that suggests that women who wear blusher have more children than those who don’t? No, we do not.

Peterson is also well known for using the existence of patriarchal dominance hierarchies in a non-specific lobster species as supporting evidence for the natural existence of male hierarchies in humans. Why out of all creation choose the lobster? Because it fits with Peterson’s preconceived political narrative. Unfortunately, it’s a crazily poor choice, and woefully researched. Peterson asserts that, as with humans, lobsters have nervous systems that “run on serotonin” – a phrase that carries virtually no scientific meaning – and that as a result “it’s inevitable that there will be continuity in the way that animals and human beings organise their structures”. Lobsters do have serotonin-based reward systems in their nervous systems that in some way correlate with social hierarchies: higher levels of serotonin relate to increased aggression in males, which is part of establishing mate choice when, as Peterson says, “the most desirable females line up and vie for your attention”.

I’m definitely buying his new book, The Book of Humans: 4 Billion Years, 20,000 Genes, and the New Story of How We Became Us when it becomes available in March. I’ve been praising his last book, A Brief History of Everyone Who Ever Lived: The Human Story Retold Through Our Genes, to everyone I know, and I just learned that it’s going to be used as a text in one of the anthropology electives offered at our school. He’s an author you must not miss if you’re interested in good explanations of evolution and genetics.

Day 4. Spiders grow up so fast!

Just another of my daily updates. They grow up so fast!

Not shown here is that I have 3 other sets of hatchlings that are eating fruit flies as fast as I can make them — I’m going to have to ramp up Drosophila production.

Especially since I have four other egg sacs incubating in the wings. These are fecund little critters.

Oh, hey, also: I’ve been noticing that YouTube demonetizes these spider videos very quickly. Does YouTube have arachnophobia, or am I doing something wrong? Not too worried about it — I don’t expect to make a fortune from home movies of spiders — but it’s just a curious thing.

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