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Comment Re:Shocked! (Score 3, Interesting) 23

That is not what they found. What they found is that if you spend 60 minutes doing the homework with AI, you learn approximately as much as someone who spends 60 minutes doing it without AI. If you spend 20 minutes doing it with AI, you learn as much as someone who spends 20 minutes doing it without AI. Etc. The only real difference is that the AI people get way better homework scores, and as a result, tend to stop spending as much time, and thus tend to learn less.

That's what this preprint study found.

Comment Re:Get rid of homework (Score 1) 23

100% this. Even a short 5-minute quiz with just a couple questions at the start of each day will do the trick. But you simply can't rely on homework scores to be a proxy of learning or time spent studying anymore. Brief daily quizzes on the previous day's material will force them to.

Also, It's not like students have the excuse of, "I couldn't study, I didn't have anyone to explain X to me" anymore. The very AI that they might otherwise use to cheat on their homework can also explain to them the things they missed in last year's algebra class that are blocking them from learning this year's calculus, or whatnot. Congrats - you now have an infinitely patient personal tutor who will spend hours dumbing things down for you until you get it. Now you have no excuse - learn the material. It becomes all about actually putting the time in.

Comment Re:Shocked! (Score 2) 23

Yeah. There's been widespread misrepresentation of this (preprint!) in the media. What they actually found: test scores correspond to how much time you spend doing homework, regardless of whether you use AI or not. Which should not be a surprising result! Of course, the AI people, esp. those who had been using AI for more than a few months, stopped spending much time on their homework, and then their test scores fell to match the non-AI users who didn't spend much time in their homework either.

The TL/DR is, in today's age, you cannot use test scores as a proxy of how much time a user is studying or knows the material.

There are of course some caveats, beyond the fact that it's just a preprint - notably that there's nothing to separate why the user started using AI to do their homework, so there's potential confounders in there. For example, if a student is in a poor family, maybe they had to get a job to help pay the bills. But working a job itself can lower test scores - for example, having to work late the night before an exam. So there are some confounder problems with the study. That said, I'm sure the general conclusion is correct: time spent doing the thing = amount of learning the thing (relatively independent of what tools you're using in the process).

Comment Re:A company buying another company (Score 2) 24

I feel like I'm in a constant race to flee enshittification : Used to use Cursor (it's still my only option at work), but then Musk bought it, and they instantly went in on hard-sell tactics. Switched to vscode + copilot + OpenRouter, but was getting concerned about API costs. Just yesterday I set up a Tencent TokenHub account with their Max package, which required that I switch off copilot if I wanted to be able to use some models like Kimi K3 (had a temperature=1.0 requirement, copilot doesn't let you set temperatures and hardcodes them to very low), so now it's vscode + Pi + TokenHub.

Sigh. Please don't make me move again...

(Not that Tencent is in any way "the good guys"... but they're also providing a very generic product)

Submission + - Flock Has a Powerful New AI Tool for Police. We Got Its Code (archive.ph) 1

fjo3 writes: Vehicle surveillance giant Flock Safety has told the public for years that its technology “cannot recognize, identify, or track individuals.” It has now built a system that does both, an artificial intelligence tool for police that can identify drivers and track vehicles by their patterns of movement alone, WIRED has learned.

Comment Re:Or (Score 5, Interesting) 70

"It suggests" if you ignore that their confounder control is terrible. First, sugar wasn't the only restricted food in post-war Britain - there was also rationing of eggs, butter, cheese and meats that ended during the same timeperiod. So you're not actually testing the effects of sugar consumption, now are you? Also, the early 1950s was a period of rapid change in the US, including the maturation and expansion of the NHS (founded in 1948), the introduction of new childhood vaccines, major environmental shifts (for example, the Great Smog of London in 1952 vs. the 1956 Clean Air Act). Saying "all changes = sugar" just based on birthdate seems absurd.

It's also worth mentioning that there's also survivorship bias - anyone who died before the study couldn't be enrolled, and there's also no actual linking to any maternal / childhood dietary logs. Also, the ratios of cancer differences they're describing aren't small, they're massive. Are we to attribute a lung cancer difference on the order of smoking vs. nonsmoking households as being to sugar, or due to, you know, smoking (or pollution) trends not accounted for in their cohort?

Comment Re:I'm German (Score 2) 86

Way to out yourself as being American by being simultaneously loudly, assertively ignorant and racist at the same time.

** - Collective guilt is a fallacy; modern Germany is a highly democratic constitutional state with a commendable record on teaching against extremism; Marx and Engel drew heavily from French utopian socialists (e.g., Saint-Simon, Fourier), while it was the Russians who actually implemented communism; World War I began with the assassination of Austrian Archduke Franz Ferdinand by a Bosnian Serb nationalist, triggering a chain reaction of ultimatums and alliances involving Austria-Hungary, Serbia, Russia, France, Germany, and Great Britain, with any individual state bearing guilt for the war being a notion firmly rejected by modern historians; Hitler was born in Austria-Hungary and was an Austrian citizen until he renounced it in 1925, not gaining German citizenship until 1932; the East German government and the Stasi was forced on the people of Germany by the USSR, and it was not a global phenomenon "brought to the world", but rather dissolved with the GDR in 1990. TL/DR: Go fuck yourself.

Submission + - New Gel Regrows Tooth Enamel (sciencedaily.com) 1

fahrbot-bot writes: ScienceDaily is reporting that researchers have developed a fluoride-free gel that could help rebuild damaged tooth enamel, something the body cannot naturally replace once it is lost. Inspired by the proteins that guide enamel formation in infancy, the gel fills microscopic cracks, acting as as a framework, and draws calcium and phosphate from saliva to grow a new mineral layer that closely matches healthy enamel.

The material draws calcium and phosphate ions from saliva and uses them to guide the controlled formation of new mineral crystals. This process is known as epitaxial mineralization. In simple terms, the new crystals grow in alignment with the tooth's existing structure, allowing them to connect with the natural tissue beneath them rather than forming a separate, poorly organized coating.

According to the researchers, this organized growth helps the repaired surface recover both the microscopic architecture and the physical properties of healthy enamel.

In addition, when applied to exposed dentine, the gel can grow an enamel like mineral layer over the surface. This could help reduce tooth sensitivity while also creating a stronger surface for dental restorations to bond to.

The researchers tested the regenerated material under conditions intended to reproduce the stresses teeth experience in daily life. These included repeated brushing, chewing forces, and contact with acidic foods that can gradually dissolve enamel.

The results showed that the restored tissue displayed mechanical behavior similar to that of healthy natural enamel, suggesting it may be durable enough for practical dental use.

In lab tests on human teeth using human saliva, the process took about 24 hours for the initial crystallization, reaching 80% of the enamel's original strength in 2 weeks. Human trials have recently begun.

The study is published in Nature and also discussed on Instagram.

Comment Re: quiet part out loud (Score 1) 90

I'm not sure how well that would work on this. I don't know the specific algo they're using, but an early, primitive one was even-odd. You divide all tokens into two groups, A and B. When generating, on even tokens you somewhat boost the odds of tokens from A, while on odd tokens, you somewhat boost the odds from B. If a high-probability word is coming up it won't meaningfully alter it, but if there's different ways something can be phrased, it can cause changes in the phrasing choice to match the A/B boosts.

Now, it's easy to see how one could defeat that algo, but I'm sure that what they're using now is a lot more sophisticated than just alternating even-odd.

Comment Re:What's the point if you can't actually change i (Score 1) 57

. You can't just decide you don't like the algo and that you'll modify it and use a different one;

I mean, on any decent social media platform you should be able to? Bluesky has had this feature for years. Not just algo choice, but the ability to outright create your own algos and share them with other people.

It's IMHO a red flag when a for-profit company wants to force everyone to use the same algo.

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