3 ms·
What other properties does your hypothetical ball have which aren't preserved?
by throwawaymath 8y ago
What other properties does your hypothetical ball have which aren't preserved?
- neals 8y agoage?
- throwawaymath 8y agoOkay, that's fair. That property can't really be linearly reversed. I was speaking to an idealized system consisting of a ball in a vacuum moved from one point to another. That's closer to a macro representation of what's happened here.
- empath75 8y agoAll the atoms making it up would have changed in various ways, which is to say that even if it’s been moved and moved back, one could tell that time has passed with an appropriate observation. For a single electron, this would not be the case.
- throwawaymath 8y agoYeah the analogy isn't perfect, but despite that I think it basically works as a macro representation. Obviously the ball isn't a fundamental particle and we wouldn't have all information about how it ages. But tracking just the ball's position is meant to analogize the fact that we have all information about e.g. a fundamental particle's position.