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cmuratori's profile
Casey Muratori
Casey Muratori
Casey Muratori
@cmuratori

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Casey Muratori

@cmuratori

I'm worried that the baby thinks people can't change.

Seattle
caseymuratori.com
Joined March 2009

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    1. Casey Muratori‏ @cmuratori 14 Apr 2020
      Replying to @cmuratori @Jonathan_Blow

      But saying that it is "the way the universe works" or something is very bizarre, because although, for example, MPEG-4 can use a seemingly bizarre set of codes to magically reproduce what appears to be an exact visual representation of the world, it's _not_ how the world "works".

      4 replies 0 retweets 13 likes
    2. Casey Muratori‏ @cmuratori 14 Apr 2020
      Replying to @cmuratori @Jonathan_Blow

      So sure - context free geometry replacement grammars can be used to compress all sorts of natural phenomenon into some simple rules so long as you accept a number of constraints, but they don't really add any insight to what we already know.

      2 replies 0 retweets 7 likes
    3. Casey Muratori‏ @cmuratori 14 Apr 2020
      Replying to @cmuratori @Jonathan_Blow

      They're a compression format for rules, might be another way to say it, and they're also probably lossy. Since context-free grammars _also_ have all sorts of limitations, it also seems likely that they cannot explain the universe properly, otherwise they would work better :)

      2 replies 0 retweets 5 likes
    4. Casey Muratori‏ @cmuratori 14 Apr 2020
      Replying to @cmuratori @Jonathan_Blow

      Anyway, Twitter is not great at explaining this, but hopefully that is the basic gist. So this just seems like another case of Wolfram "rediscovering" something we've known for like 60 years and thinking he made a breakthrough.

      3 replies 0 retweets 8 likes
    5. Zdeněk Gromnica‏ @FutureMillenniu 14 Apr 2020
      Replying to @cmuratori @Jonathan_Blow

      I'd love to hear you expand on this! Perhaps an unprepared video rant? :-)

      1 reply 0 retweets 0 likes
    6. Casey Muratori‏ @cmuratori 14 Apr 2020
      Replying to @FutureMillenniu @Jonathan_Blow

      Not much to say. Graphs can effectively encode anything we can encode, because they contain both things (edge existence is discrete and edge lengths are continuous). It is not "interesting" to me to say that you can create graph encodings of any specific thing, because of course.

      1 reply 0 retweets 1 like
    7. Casey Muratori‏ @cmuratori 14 Apr 2020
      Replying to @cmuratori @FutureMillenniu @Jonathan_Blow

      Most of the Wolfram stuff I've actually looked at tends to try to get rid of the edge lengths and replace the continuous part by just counting nodes. Which is also another thing you can do, and then you're back to sort-of being able to encode everything but...

      1 reply 0 retweets 1 like
    8. Casey Muratori‏ @cmuratori 14 Apr 2020
      Replying to @cmuratori @FutureMillenniu @Jonathan_Blow

      ... then you have to get into hand-wavy territory of "well we have the same _order_ as the equation we would expect" (these are the statements like "it grows with r^2 just like equation X that we were expecting").

      1 reply 0 retweets 0 likes
    9. Casey Muratori‏ @cmuratori 14 Apr 2020
      Replying to @cmuratori @FutureMillenniu @Jonathan_Blow

      But again I'm just not sure why this is interesting, unless the idea is just that nobody thought graphs could encode real-world things, so you have to convince them of that? I would think that was obvious but traditional disciplines do get set in their ways, so...

      1 reply 0 retweets 0 likes
    10. Casey Muratori‏ @cmuratori 14 Apr 2020
      Replying to @cmuratori @FutureMillenniu @Jonathan_Blow

      ... maybe that's just not true, and it is good that somebody is trying to convince people to look more seriously at graph encodings? I don't know. I don't actually _care_ about physics, so I suppose that may have something to do with it :P

      1 reply 0 retweets 0 likes
      Casey Muratori‏ @cmuratori 14 Apr 2020
      Replying to @cmuratori @FutureMillenniu @Jonathan_Blow

      The TL;DR is that I thought it was obvious that everything can be encoded in a graph, because we currently don't know of anything _more_ expressive than a graph. So obviously all equations - ALL of them we might want - can be created on a graph, because that _has to be true_.

      11:58 AM - 14 Apr 2020
      1 reply 0 retweets 0 likes
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        2. Casey Muratori‏ @cmuratori 14 Apr 2020
          Replying to @cmuratori @FutureMillenniu @Jonathan_Blow

          Another way to say it is that we know that computers can compute anything that we currently know how to formulate, and we know that any compute program can be represented by a graph. Is it really that interesting to then point out you can make anything with that graph?

          0 replies 0 retweets 0 likes
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