• 1 Post
  • 140 Comments
Joined 1 year ago
cake
Cake day: June 24th, 2023

help-circle

  • While I disagree that “billions is beyond being halved”, there is some truth to the idea that numbers can get so big that halving doesn’t make much difference. That seems very very counter-intuitive, so I’ll try to briefly explain.

    Consider (10^10 + 2). That’s 10000000000+2. I think it’s fair to say that the +2 doesn’t make a lot of difference. It’s still approximately 10^10.

    So then, consider 10^(10^10)×100. That’s a huge number, too big to type here, then multiplied by 100. So the result is 100 times bigger than the huge number. But… writing it down we see this:

    10^(10^10)×100 = 10^(10^10+2) ≈ 10^(10^10).

    So although ×100 does make it one hundred times bigger… that just doesn’t really make a lot of difference to a number as big as that one. As numbers get bigger and bigger, they start to take on properties a bit like ‘infinity’. Addition stops being important, then multiplication, then for even bigger numbers exponentiation doesn’t huge much of an impact either.

    Mathematically, I think this is really cool and interesting. But I don’t think 1 billion is that big. 10^9 is big enough that +2 doesn’t matter much, but not so big that ×2 doesn’t matter.

    [edit] (I’m struggling to get the nested powers to look right… So hopefully my meaning is clear enough anyway.)


  • To this very day, I know nobody - NOBODY - who even comes close to Gmail’s spam filtering capability.

    I disagree. Perhaps you need hard evidence for a claim like that.

    I have a gmail account, and a proton mail account. My gmail account is packed with spam. It has so much spam its crazy. The account is basically unusable. Which is fine, because I no longer trust google. It’s been years since I’ve told anyone to use this account.

    On the other hand, I can count on one hand the number of times I’ve got a spam message in my inbox on protonmail. In fact, I remember. It’s 2. The account isn’t as old, but I’ve used it to sign up for at least as many things. It’s my main account now - partially because I’ve turned anti-google, but also because its not choked by mountains of junk.

    (To be fair, I suspect the main reason that my gmail account is so bad is that it has a popular username, and other people have accidentally signed up for things with my email accidentally instead of their own. Nevertheless, the fact is that the gmail is spam-central, and the protonmail account is clean.)
















  • Privatization seems like a really bad idea to me. Helium is non-renewable resource. Privatization is about being ‘efficient’ at maximising profits. Do you think the people / companies that own the helium reserves are going to be interested in keeping helium available for centuries in the future? I’d say probably not.

    For a profit based company, the only motivation to preserve the helium for future use is that maybe it will be worth a lot more money in the future. But there are two big problems with that. Firstly, the timescale is likely to be too long for the profit to be of interest. And secondly, the main reason the price would go up is scarcity; and that scarcity will come sooner if the helium is wasted in the short term. (Unless one company actually has a monopoly on helium, in which case they can create artificial scarcity by just not selling it. But that would obviously be bad for other reasons.)



  • blind3rdeye@lemm.eetoMemes@lemmy.mlBetter prepare
    link
    fedilink
    arrow-up
    17
    ·
    24 days ago

    There’s no way hippos have the long-distance endurance of humans. Pretty much everything is faster than humans at sprinting, but for endurance running, humans are next level. (Not me of course, I’m not really fit enough to be called human in this context.)