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Mar 28, 2024 27 tweets 10 min read Read on X
Paleo artists often "shrink wrap" fossilized animal depictions

The T-Rex, Utahraptor, Triceratops—popular depictions of each of these animals shows skin so close to bone that it might be unrealistic

So let's shrink-wrap existing animals🧵

Can you guess what this is? Image
Preemptive note: All of this artwork is from C.M. Koseman, whose book (which is way more extensive than this thread) and some other material is linked at the end of the thread.

The last animal was a rhinoceros—the thing with the cooling heat sail!

Any idea what this animal is? Image
That last one might seem to be a dog, but it's actually a horse.

It's not so clear what this graceful beast might be. Image
The last picture was of a cow.

What about this monster? Its jaws can crush a steel car. Image
That metal-breaker was a hippopotamus.

This pack-hunting animal has a killer stare and wields a set of five switchblade claws on its forefeet. What might it be? Image
That was the house cat.

This one's a bit more mysterious, and clearly adapted to be a stealthy predator, right? Image
If you guessed that was a spider monkey, kudos to you. Future paleontologists might consider it an arboreal variation on humans, its cursorial relatives.

What of this one? It's not clear to future paleontologists if it's quadrupedal or bipedal. Image
That's the toad, which paleontologists might consider to be a long-legged forest ambler.

Any idea what this one is? Without preserved feathers, guessing might be hard! Image
If you guessed "Vulture", you're correct. But you probably didn't guess that!

You almost certainly won't guess this one. Image
That was a species of casque-headed hornbill, and paleontologists might suspect they use the casque for mating rituals. But we don't even know what they do with them in many cases today!

How's about this twofer? Note predator and prey: Image
If you guessed the "Swan" and the "Tadpole" (mistakenly believed to be a form of fish), then you were right.

What about this cute little predator? Image
That was an iguana, and due to fur being found on other small vertebrates like rats, it's assumed to have fur too.

Who's this courser? Image
That was a rabbit, but we wouldn't know it because posture is poorly preserved in fossils!

Now this one is simultaneously reassuring and disheartening. What might it be? Image
That's a python, and it might be assumed to have feet to support its body, much like the lizards its skeleton resembles. After all, we only have fragmentary remains!

Who's this guy? Image
That's a manatee. Remember, habitats change. A sea creature might be found in what's now a forested mountain. We might also only have remains like skulls.

This guy has a balloon-like facial sac. What might he be? Image
That's a bull elephant, and because no other animals have long, muscular appendages, he ends up with a face sac instead of his well-known trunk.

Time to dive underwater.

This one might seem to be a dolphin, but think outside the box. Image
It's a sperm whale, incorrectly believed to be a hunter of large pray. You know, like sharks.

What's this kelp forest stalker? Image
Why that's a bowhead whale of course! And as we know from its skeleton's extensible jaws, it must prey on animals as large as itself!

Going back to the land, who are we looking at now? Image
Because of its complicated nasal sinuses, the baboon might be assumed to have had venom glands and to have been a coursing hunter!

These guys have curved foot claws, sometimes serrated bills, and wings shorter than their legs. They must be vampiric! Image
But that's not the case, it's just an odd animal. It's a hummingbird, the only animal in its strange niche, and thus a prime candidate for misinterpretation!

Finally, who the hell is this? Image
That might be the first example of shrink wrapping and distorting the fossil record: the animal proposed to be pre-flood man, or Homo diluvii by Johann Jakob Scheuchzer in 1726

But though he thought he had evidence for the flood, he was describing the fossil of a salamander!Image
How we think about ancient animals is probably distorted by a tendency to shrink wrap their depictions and a desire to find function in form.

But much of what we observe in animals today, we still can't explain. Skin also drags, and feathers and fur abound (but not universally).
If you want to see more on this subject, I recommend the whole book, which contains many more illustrations and details for all of them.

Get it here: amazon.com/All-Yesterdays…
And if you're interested in speculation about possible futures, C.M. Koseman's All Tomorrows is spectacular. You can see it summarized on YouTube, here:
Koseman isn't the only person to have illustrated this issue either.

This opossum, for example, comes from the HowStuffWorks Tumblr:

Here's more: howstuffworks.tumblr.com/post/512612262…
imgur.com/a/BEz4r
Image
There is an error in describing sperm whales in the thread:

The issue is more that they would probably be thought of as behaving like sharks in the far future, but they're actually pretty social and frequently team players.
The artist for All Yesterdays and All Tomorrows has a Twitter account:

The opossum artist also has an account:

And the artist behind the inflated T-rex is apparently the creator of One Punch Man:
twitter.com/NixIllustration
twitter.com/NEBU_KURO

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Jan 29
How well-known is this?

A lot of the major pieces of civil rights legislation were passed by White elites who were upset at the violence generated by the Great Migration and the riots.

Because of his association with this violence, most people at the time came to dislike MLK. Image
It's only *after* his death, and with his public beatification that he's come to enjoy a good reputation.

This comic from 1967 is a much better summation of how the public viewed him than what people are generally taught today. Image
And yes, he was viewed better by Blacks than by Whites.

But remember, at the time, Whites were almost nine-tenths of the population.

Near his death, Whites were maybe one-quarter favorable to MLK, and most of that favorability was weak. Image
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The Pope, like his recent predecessors, is good to take this position: anti-Semitism is manifestly idiotic!

On that note, did you know that the Catholic Church was actually one of the biggest forces in stopping the rise of the Nazis?

It's true!🧵 Image
You might say that the Catholics didn't vote for the Nazis because they had their own party: Zentrum.

This isn't the explanation.

Note: the Catholic Church opposed both forms of totalitarianism in Germany, but it had an asymmetric effect against the Nazis, not the Communists.Image
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But when the local clergymen were "Brown Priests" (Nazi-supporting priests) like Alois Hudal? Image
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Jan 27
The researcher who put together these numbers was investigated and almost charged with a crime for bringing these numbers to light when she hadn't received permission.

Now we have an update that goes through 2020!

First: Where are Sweden's rapists from?

Mostly not Sweden. Image
What countries were those foreign rapists from?

We only got information on the top five origins, constituting roughly half of the foreign-born samples, and thus about a quarter of all the rapists. Image
What about welfare usage? 35.1%.
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Drug addiction? 23.7%
A diagnosed psychiatric disorder besides that? 13%

What about a criminal prior? 52%. That compares to 13.4% of non-rapist criminals. So rapes? Considerably more preventable.
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Greater Male Variability rarely makes for an adequate explanation of sex differences in performance.

One exception may be the number of papers published by academics.

If you remove the top 7.5% of men, there's no longer a gap! Image
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Because these are stats on professors, this means that if there's greater male variability, it's mostly right-tail
Despite this, the very highest-performing women actually outperformed the very highest-performing men on average, albeit slightly.

The percentiles in this image are for the combined group, so these findings coexist for composition reasons. Image
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Jan 17
One of the issues with understanding Greater Male Variability on IQ tests is that groups that perform better tend to show greater variance

Therefore, to estimate the 'correct' male-female gap, you need to estimate it when the difference is 0

In the CogAT, that looks like this: Image
In Project Talent, that looks like this: Image
And comparing siblings in the NLSY '79, that looks like this: Image
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Jan 14
About a decade ago, a theory emerged:

If men do more of the housework and child care, fertility rates will rise!

Men have been doing increasingly large shares of the housework and child care.

Fertility is lower than ever.Image
In fact, they're doing more in each generation, but fertility has continued to fall. Image
The original claim, that men's household work would buoy fertility, was based on cross-sectional data that was inappropriately given a causal interpretation.

The updated cross-sectional data is as useful, and it affords no assurances about the original idea.

We should move on.
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