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Cake day: October 6th, 2023

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  • I mean, airplane brakes probably have about a 3% duty cycle (the percentage of time they’re in use), so they’re generally idle. For city driving, car brakes probably have about a 25% duty cycle.

    If those numbers are close to accurate, that means planes are using their brakes about 10x less than cars.

    BTW, I didn’t pull those plane numbers directly out of my ass, but they’re definitely a rough estimate. I’m figuring about 5 minutes of breaking time per flight, counting landing and during the taxi to and from the runway. And I’m assuming a 2.5 hour flight, figuring that could be close to an average flight time.










  • Well sure, we haven’t classified all bacteria, and that is part of why new strains catch us by surprise, but to be fair, that is an impossible task.

    Bacteria just mutate too quickly to ever completely catalogue them. For instance, infectious bacteria can go through hundreds of generations in a single host, over the course of a single infection. Which means that every infection presents a decent chance for them to turn into a new species.

    But the majority of bacteria is not infectious, they simply don’t interact with humans much. Like, lots of bacteria are just little blobs that eat smaller bacteria. So we don’t tend to really study them extensively unless they have some other important macro effect on the world.








  • tbh, the concept of tiktok-style videos is really good for science and small useful info bits.

    What? That’s… absurd.

    I mean in the context of science, how is a tiktok style short video in any way superior to a longer form video? I mean there’s some really great science content on YouTube, vertasium, smarter every day, 3 blue 1 brown, minute physics, etc. But if you only watch a short snippet of video, what you’re cutting out is the entire scientific method, the part where they ask the questions, investigate, form a hypothesis, explain some experiments. Invariably, the short skips right to a conclusion, without any of the context. It’s like providing the right answer on math homework without showing your work, it’s functionally useless. It’s like science candy, it tastes great, but has zero nutritional value.

    I can’t see any way to avoid concluding that YouTube shorts are terrible for science.