The established pattern of my thought processes is that I get funny notions into my head and sort of let them stew in there for a while, for no apparent reason and with no obvious trigger. Such has been the case with what I present today. This won't be structured and it likely won't be pretty. Think of it as a philosophical doodle—just a sloppy sketch that may or may not contain a kernel of something worth pursuing in a more formal structure at some point. ----- Based on what we generally know about physics [not including quantum mechanics, which very few of us have any reasonable conception of], it seems to me that a perfectly sane person might reasonably conclude the following: If we could accurately model the position, spin, direction, and velocity of every particle in the universe at any given moment, it would be theoretically possible to plug that data all into an imaginary supercomputer and predict with perfect accuracy the exact state of everything at any future poin