Russell, I think your argument would be stronger if you said that playing a movie through a projector is still a computation, albeit a simple one. Obviously playing a movie in a media player on a computer involves computation, but I can't see how that's relevant to the MGA - a media player clearly isn't necessary to play all types of movie, so as it stands you've left a loophole (IMHO).
Also, I can't see how the "block multiverse" comment is relevant. Movement is well defined in a block universe (or multiiverse). Assuming change is required for a computation to be carried out, the only question is whether movement exists from the point of view of creatures living inside the universe in question - which, clearly, it does. Hence being embedded in a block universe won't stop a computation happening, as a sequence of states strung out along the time axis, just as it doesn't prevent a car from moving just because the car can be described as a worldline from a "god's eye" perspective. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
