Crémieux Profile picture
Feb 11, 2024 14 tweets 4 min read Read on X
Arthur Schlesinger dismissed studies of soldiers' World War II experiences as demonstration of common sense.

Perhaps he was correct. Consider the following findings:

"Better educated soldiers suffered more adjustment problems than less educated soldiers. (Intellectuals were less prepared for battle stresses than street-smart people.)"

"Southern soldiers coped better with the hot South Sea Island climate than Northern soldiers. (Southerners are more accustomed to hot weather.)"

"White privates were more eager to be promoted to noncommissioned officers than Black privates. (Years of oppression take a toll on achievement motivation.)"

How many of those findings did you predict in advance?
If you voted, skip to the next post to see the answer key.
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Each statement was "common sense," and they were all wrong.

If they had been stated in reverse and given new explanations, they would have still been called "common sense."
What's "common sense" is the domain of "Didn't we already know this?" and "Isn't this obvious?"

It's the domain of questions that people probably didn't predict, but will claim they would have. That's why predictions are so much more valuable than post hoc explanations.
People are infamously bad at actually predicting things or describing changes, and similarly infamously likely to state they knew what would happen or did happen all along.

For example, teachers don't know how much they have learned:
People don't know if they're eating more or less:
More, useless information can make predictions worse, but people still want more information: cremieux.xyz/p/bias-in-admi…Image
I have often explained what can be regarded as obvious concepts to those with statistical acumen.

But though there are trivial proofs aplenty undergirding these concepts, people still struggle with them.

Here's an example about combining distributions:
Here's another, on the issue of scaling:
And here's another, on the issue of comparing pass rates and standardized group differences:
Some people have even posited empirical "riddles," where some finding seems inconsistent with some other finding, but close inspection reveals there's no issue at all.

For example, Israeli PISA performance is not mysterious: aporiamagazine.com/p/pinpointing-…Image
What's obvious to me may not be obvious to you. What's obvious in hindsight might not be correct at all.

"Obviousness?" and "common sense" are a scourge on discussion in many domains because many phenomena are less self-evident than they might feel in a given moment.
And sometimes you do have to show evidence for the "obvious." Being a human who cares about others can require it.

The OP questions and this observation came from lesswrong.com/posts/WnheMGAk…

The original study is academic.oup.com/poq/article-ab…

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More from @cremieuxrecueil

Jul 26
Men used to live many lives.

John Smith, founder of Jamestown, got his start fighting the Ottomans for Habsburgs. He killed so many Turks they knighted him and gave him a coat-of-arms with three Turk heads on it.

He was captured, sold as a slave, escaped, and founded Jamestown. Image
The Turks are for the three who challenged him to duels, all of whom he beheaded.

He also killed his slavemaster who was trying to convert him to Islam, then he escaped from Istanbul to Russia, passed through the Polish-Lithuanian Commonwealth, and made it England.

Hello, HBO?
"Pocahontas, did I ever tell you about the time the Prince of Transylvania made me a noble in the Austro-Hungarian Empire because I cut off three Turkish guys' heads? Good times." Image
Read 4 tweets
Jul 17
Data centers barely use any water, barely use any land, and they lower electric bills. Image
Want a version with logged axes so you can actually see data centers? Image
Want mobile-ready versions to convey each of these points?

No worries!

Here you go: separate charts for water, land, and electricity so you can deliver the stats at a moment's notice! Image
Image
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Read 4 tweets
Jul 4
Do you know the most patriotic drink you can have today?

It's a wine from a little island controlled by Portugal.

It was definitely the Founding Fathers' favorite drink, and it's likely the most important drink in American—and thus world—history.

Let's talk about Madeira🧵Image
Our Colonial forebears "swam in a sea of booze from breakfast till bedtime".

It was safer than drinking the water, but that wasn't the only reason they did it.

They were also rowdy, young, and they liked to drink. When it came time to party, they showed it! Image
Before the Revolution, the British vigorously curtailed the import of French and Spanish wines into the colonies.

So, what could the colonists drink? Rum, brandy, spirits, and their favorite: wine from the Portuguese island of Madeira! Image
Read 15 tweets
Jun 30
Amy Wax got in trouble for remarking that she'd not seen a Black student in the top quarter of a Penn Law class.

Thanks to hacked Columbia data, we can see that she was...

Probably right!

In the decade before her statement, there were just two top-25% Black students. Image
It is *totally* plausible that she never met these students. And it's also plausible that she rarely saw Black students in the top *half*, because each year, the number of them was just 1-4.

But, despite being 8% of the class, they were ~40% of the bottom 10%-ranked students: Image
Note: Penn is on-par/slightly less elite than Columbia, so it's likely that the Black students there were somewhat *worse*, as the article notes, making her claims more likely.

This all comes from @zagrebbi's latest article. It's well worth a read!

Link: rightrationalism.art/p/black-law-st…
Read 4 tweets
Jun 30
And there it is:

The Supreme Court has decided to maintain Birthright Citizenship.
Big day if you think Roe v. Wade was correctly decided.

My favorite part (note that I've only read 150 pages so far) was Thomas explaining that, no, the Founding g Fathers did not adopt the English feudal system.

This fact was clearly lost on the other side. Image
The Court's reliance on a random remark from a case that ultimately didn't even produce lasting changes raises the question of whether that sort of thing even matters.

Why shouldn't I cite the Dred Scott case as the law of the land? Image
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Read 4 tweets
Jun 26
The medical community has cured a mountain of diseases in the past several decades.

Diseases cured thread🧵

In 2013, hepatitis C was cured by direct-acting antivirals. Image
Peptic ulcers are now curable in more than 90% of patients via antibiotic triple/quad therapy (1994). Image
Sickle cell anemia was cured in 2023 for >96% of patients. Image
Read 22 tweets

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