The uncertainty principle doesn't imply that any information is being destroyed, it implies that there is a limit to the amount of information you have. Positio

The uncertainty principle doesn't imply that any information is being destroyed, it implies that there is a limit to the amount of information you have. Position and momentum are things that you derive from the available information. You just can't use the same limited pool of information to derive the both in a way that would use more information than you have. >I don't see how you can find an earlier state from knowing the current state since you can't know position and momentum, right? State has little to do with position and momentum directly, but the underlying information. We use those concepts to indirectly refer to state, but state is more fundamental. Information arises from a correlation between states, and position and momentum are different measures of this correlation.