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Cake day: January 16th, 2024

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  • I am about halfway through but it’d really help if someone could maybe do a TL;DR about the C++ features that are mentioned in this post.

    Like what the fuck are profiles? Modules? C++ has modules? Half of my current job is in C++ and I have no idea what any of those things are. Which seems to be a common problem with C++, e.g. I’ve recently learnt that something for garbage collection used to exist, but it was scrapped and removed from the standard before I’ve first heard of it.

    It’s hard to understand the reddit comments linked without this context and the post itself is like an hour-long read.

    EDIT: Okay I see profiles are explained in a section later, but modules are not? Also they’re explained in opposition to “contracts” which I’ve also never heard of and jesus fucking christ, this language is a hellhole

    EDIT2: I’ll add operator . to the list of plot important characters that get no introduction if you’re not familiar with the C++ Extended Universe





  • In that sense, no underlying physical state could be said to hold “more” information than any other, right?

    In an information-theoretical sense, you can have a message that has a lower or higher information content. This is where entropy gets derived from. But it only makes sense for a fixed distribution – a more likely outcome has a lower information content. So I think you could have a physical state holding more information, if it’s a less likely state for some fixed definition of likeliness.

    This would probably be closer to an actual link between informational entropy and physical – a given microstate has lower physical entropy when it is a less-likely state (e.g. half-squished cup of coffee), and that state would have higher information content if we considered the state as the message. This intuitively makes sense, because physical entropy is in some sense the ability of a system to undergo change, so indeed a low-entropy system is “more useful”, just like a message with higher information content is “more useful”.








  • Storing a message in a system doesn’t make new microstates. How could it?

    Lol I got so tripped up by him later saying “this is no longer clearly 0 or 1 so it doesn’t exist” and decreasing N that I missed he does the reverse thing when encoding the message.

    This is like the ontological argument. He creates a virtual entity from words alone and then treats it as a physical thing storing energy. And then once it no longer fits the words of the definition, poof, gone it is, oh look, total entropy decreased.


  • We have to consider probabilities, not just for where the pieces are, but also for how they are moving.

    I completely omit that because, well, it’s hard, but also I don’t think it’s necessary here. This approach doesn’t work even if you consider only positions and assume uniformly random momentum. It doesn’t work even if the microstate is “is this pixel more red or more blue” in the paper’s experiment!

    But thank you for the comment, I’m glad I didn’t completely butcher entropy with my weird nonrigorous internal model I developed based PBS Space Time videos lol


  • but you aren’t quite right about some of the details.

    I’d be happy to be corrected.

    This isn’t too outlandish, and modern studies of quantum mechanics suggest that information is a conserved quantity,

    I hope I didn’t pass it as if it was completely out there, that information has to have some physical properties and energy as a carrier is a very reasonable hypothesis. The Landauer principle is not that controversial, I’m sad I’m too stupid to actually understand the discussion around it on any reasonable level lol







  • So, how does Abdaal watch anime and TV productively you might ask? Well, the fact that his listens to audio books on 3.5x speed should give you an idea.

    […] normally what I do is, I’ll just speed-speed-speed-speed-speed-speed-speed up until it gets to an interesting point, and I’ll speed it as fast as I can so I can still keep up with it.

    And because he obviously can’t hear what’s being said when watching at 3.5x speed anymore, he’s speed-reading subtitles.

    Lol, great, at that point you can just as well read the plot synopsis on a wiki or something. Or ask ChatGPT to tell you what it was about… aaand I just rediscovered the main thesis of this essay, nice