Optimally compressed data is essentially indistinguishable from random noise. Could we tell the difference between a universe that has already been converted into computronium and one that’s empty?
Optimally compressed data is maximum entropy, so that’s how a universe being used as computronium would look. So we’re not in such a universe, since:
a) It has too many observable regularities (i.e. we further compress it by identifying laws of physics) b) black holes have the most entropy per unit mass, and most of the universe isn’t one.
I’m not too up to date on my cosmology but isn’t it still theorized that dark matter accounts for more mass than visible matter? I would expect advanced civilizations to minimize energy wastage through electromagnetic emissions. I’m not sufficiently knowledgeable about physics to know whether computronium would possibly have the theorized characteristics of dark matter however.
Optimally compressed data is maximum entropy, so that’s how a universe being used as computronium would look. So we’re not in such a universe, since:
a) It has too many observable regularities (i.e. we further compress it by identifying laws of physics)
b) black holes have the most entropy per unit mass, and most of the universe isn’t one.
I’m not too up to date on my cosmology but isn’t it still theorized that dark matter accounts for more mass than visible matter? I would expect advanced civilizations to minimize energy wastage through electromagnetic emissions. I’m not sufficiently knowledgeable about physics to know whether computronium would possibly have the theorized characteristics of dark matter however.