Crémieux Profile picture
Sep 23, 2024 7 tweets 3 min read Read on X
The FBI has finally released crime statistics for 2023!

Let's have a short thread.

First thing up is recent violent crime trends: Image
Now let's focus in on homicides.

The homicide statistics split by race show the same distribution they have for years. Image
As with every crime, it's still men doing the killing, but it's also largely men doing the dying. Image
What about Hispanics? Their data is still a mess, but here it is if you're interested. Image
The age-crime curve last year looked pretty typical. How about this year?

Same as always. Victims and offenders still have highly similar, relatively young ages. Image
Everything else, from locations to motives to weapons is pretty similar to previous years. What's different is that the OP might show incorrect numbers.

For the past two years, the FBI has silently updated their numbers after about two weeks.

You can use the web archive to see that the data from the OP is the data shown at release last year, and the data from 2023 is the 2022 data with the FBI's suggested reductions (i.e., -11.6% homicides, -2.8% aggravated assaults, -0.3% robberies, etc.).

But you can see on their site now that they've adjusted the numbers up, so the reduction they suggested has brought us down to a figure that's less impressive than my chart shows. The difference isn't huge so I showed the OP without updating to their new data.

For reference, 2022 as reported then had a homicide rate of 6.3/100k, and they silently updated that to 7.48/100k. The 2023 data they provided today actually has a murder rate of 6.61/100k, higher than last year's initially-reported number, but lower than the updated number. To make matters worse, if you use their Expanded Homicides Report, you get a rate of 5.94 for 2022 and 5.24 for 2023.

Methodology matters and we get to see inconsistency in this year's data, not even data that's been updated or anything. It's a mess, so take everything with a grain of salt and, in the interest of caution, only interpret trends. Trends are mostly common between all data sources even if the absolute magnitudes are off, constantly updated, etc.

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More from @cremieuxrecueil

Oct 31
The CDC's new Advisory Committee on Immunization Practices (ACIP) didn't put out immunization guidance for 2025-26.

So some researchers got together and did the government's job for them. Here's what they found🧵

First, the RSV vaccine is great for preventing hospitalization! Image
The next thing up is the flu vaccine.

These are still showing a touch lower efficacy than in previous years, but they're still

(1) good
(2) worth it
(3) even more worth it for infants and children Image
Then we have the COVID vaccines, which still seem to be useful enough to save a lot of lives.

These are also still better for the old.

That's good! Image
Read 6 tweets
Oct 27
Wow!

Across basically all of Europe, people at higher income levels are now *more likely* to become parents!

This is a stunning shift! Image
Among men, this relationship goes a while back now, and in several places, the income gradient has gotten more extreme. Image
Among women, there are some recent crossover events, where the low-income used to be more likely parents than the rich, but now it's different. Image
Read 6 tweets
Oct 26
Wolf packs are remarkably good at respecting each other's established borders. Image
The project this data is from sometimes releases videos of how this plays out.

For example, here's a video of this playing out for a few wolves over a single day in Spring.
Alternatively, about 10-20% of wolf populations lack a pack. They're "lone wolves" and they're more likely to just wander across the territory of different packs

But this isn't permanent! Apparently this one eventually joined a pack and changed his long-distance traveling habit!
Read 6 tweets
Oct 23
Air traffic control has a major problem in the pipeline.

ATCs are underpaid and overworked.

99% of control towers were understaffed in 2023 and the number of communication mishaps and near-misses between commercial aircraft skyrocketed.

I think the solution might be drones🧵 Image
You might think: Wait, haven't drones been smashing into planes recently? How are they going to help?

That's true! I've attached some pictures of drone-related damage. It's real and getting worse, I'll give you that.

The answer lies in drone communication.Image
Image
Image
Image
Drones don't yet, but they can start to, constitute a low-level communication and monitoring layer around airports and other protected airspace.

Drones can relay information about the locations of other drones, obstacles, incoming planes, and so on. Image
Read 16 tweets
Oct 22
The story of peanut allergy is entering its final chapter.

Nowadays, we are beating back both peanut and other food allergies, and all it took was telling parents the right thing to do🧵 Image
The story begins in 2000, when the American Academy of Pediatrics decided to issue some simple advice to parents: Have your kids avoid peanuts early in life. Don't expose them until they're at least three!Image
Parents complied. It turns out, they do that. They just follow advice from professional associations that appear to have authority.

So peanut allergy rates rose, from 0.4% in 1997 to 1.4% in 2008, to 2% in 2015.

But if the advice was right, the opposite should've happened!
Read 13 tweets
Oct 21
The CEOs managing Sweden's biggest companies tend to be smarter, taller, and to have better personalities. Image
The highest-paid CEOs in Sweden also tend to be taller, smarter, and to have better personalities. Image
To connect these things, CEO pay and firm size are considerably connected. Image
Read 4 tweets

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