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Cake day: 2023年6月12日

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  • pcouy@lemmy.pierre-couy.frtoScience Memes@mander.xyz69 rule
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    2 个月前

    I never knew this fun fact ! I’ll try to use it with my students, and see if I this gets me more attention when I give them the trick to compute powers of 2 in your head (210 =~ 103, which leads to ln(103) =~ 10*ln(2) ).

    For anyone wondering, the trick is : Powers of 2 below 10 are easy enough to remember or just compute in your head. So if you want to approximate 2x, write it as (210*a)*(2b), with a=x//10 (integer division) and b=x%10 (modulo). b will be 9 or less, so 2b is easy to compute, and 210*a = (210)a =~ 1000a is also easy to compute.

    For instance, 232 = (230)(22). Since 230=~10003 ; and 22=4, then 232 =~ 4(1000)^3 = 4 billion. Once you get used to it, you’ll be able to say that 264 is approx 16 billion billions in no time ! :)












  • I always love seeing “quirky” innovations

    I say quirky as in “there’s already an established way of doing it that everyone is using, but I’m gonna build my own totally different thing”, similar to how Linus created Git because the established way was not good enough for his taste. Who knows, graph-based UIs for chats might be the next big thing !

    Sadly, the network effect makes it hard to have people adopt a new messenger (I can’t even get relatives to move to Signal…). I wish Matrix wasn’t such a pain to make clients for. If your graph UI was able to show me all my conversations across all my matrix rooms and bridges, I’d be using it for sure






  • Debian is already noiriously lagging behind latest package versions (that’s how they make it so stable : they freeze all package versions when they release a new version of Debian, and only backport security fixes).

    Either your AI was trained before Debian 13 came out, or it is giving you really bad advice. I can’t think of a single good reason to use an older Debian for a fresh install…