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Cake day: June 26th, 2023

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  • How are “this person” and “a BMW driver” likely male coded while “person” and “driver” are fine? It sounds to me like you’re just assuming negative intent in others, while your own use of the same words is fine because you know what you mean.


  • vithigar@lemmy.catoScience Memes@mander.xyzOxygen
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    1 day ago

    The short version is that life needs something that’s at least a little unstable in order to extract chemical energy from things.

    The post is correct when viewed in a particular light, on a technicality, if you squint. By that same technicality iron rusting is also burning very slowly. They’re ignoring the rapidity which is implied by “burning”. But yes, oxygen is unstable, oxygen helps burn things, and oxygen is toxic if you get too much at once. Though you’d need to be breathing pure oxygen pressurized to about 1.4 atmospheres, or regular air pressurized to about 7 atmospheres, for that last one to happen. It’s a legitimate concern for deep SCUBA divers.

    But why does life need instability? Chemical instability is, in basic terms, just stored chemical energy, and that energy wants to be released. The more reactive something is the easier it is to get energy from reactions involving it. There’s a balancing act here where more reactive means easier energy, but also more dangerous. Oxygen is in a kind of sweet spot where it’s stable enough that it’s not generally going to explode or catch fire on its own, but can be coaxed into doing those things in controlled ways with other chemicals to extract energy when needed.











  • I have a hobby development project with a modest community and maintain a Discord server basically because it’s necessary in order to avoid reducing my potential community reach by at least 50%.

    I’m active on GitHub and respond to comments and issues there. I maintain an official thread for my project on the official forum for the game it’s related to. I also keep all documentation, downloads, and guides off Discord and on the clearnet. Discord is still easily 80% or more of where people look for information about the project.








  • Yes, if you consider just a human-mass equivalent portion of the Sun then it’s not doing much, but that’s not really a useful comparison. We’re talking about total net entropy here, not entropy per unit mass.

    But yes, if it makes you feel any better, I’ll concede that if you had octillions of people our total metabolic energy output would, in fact, be significantly higher than that of the Sun.