Comment an old discussion, with new jargon (Score 1) 226
This is a rehash of the Boltzman's Brain paradox, which doesn't require quantum mechanics, just infinity and statistical mechanics. It's a line of thinking in physics that goes back at least 80 years and probably back to the late 1800s. This doesn't mean it's wrong or bad, just that generations of physicists have thought about this (usually with a beer or two) and there's not a hard physical answer to the question: do I exist somewhere else in the universe?
It comes down to one little bit in that article: the universe could be infinite, and may have been infinite since before the big bang. The rest is the same line of reasoning about the improbability of growing toward infinity (gravitation at first, limits on inflation now) that we've been looking at for many generations. We're pretty sure we're not growing into an infinite universe. We still have no idea if the universe started off infinite. Addressing that is a bit outside of what we can currently do.