Please note that I did not say the sequence explains "computation"; merely that it dissolves the illusion the intuitive notion of a meaningful distinction between a "computation" or "simulation" and "reality".
Fair enough, though I can't consider these explanations as settled until the notion of "computation" itself is fully clarified. I haven't read the entire corpus of sequences, though I think I've read most of the articles relevant for these questions, and what I've seen of the attempts there to deal with the question of what precisely constitutes "computation" is, in my opinion, far from satisfactory. Further non-trivial insight is definitely still needed there.
Fair enough, though I can't consider these explanations as settled until the notion of "computation" itself is fully clarified.
Personally, I would more look for someone asking that question to show what isn't "computation". That is, the word itself seems rather meaningless, outside of its practical utility (i.e. "have you done that computation yet?"). Trying to pin it down in some absolute sense strikes me as a definitional argument... i.e., one where you should first be asking, "Why do I care what computation is?", and then defining it to suit your purpose, or using an alternate term for greater precision.
You all know the rules: