https://en.wikipedia.org/wiki/Poincar%C3%A9_recurrence_theorem https://en.wikipedia.org/wiki/Poincar%C3%A9_recurrence_theor... The logic follows, and we do in

https://en.wikipedia.org/wiki/Poincar%C3%A9_recurrence_theorem https://en.wikipedia.org/wiki/Poincar%C3%A9_recurrence_theor... The logic follows, and we do in fact even know of a mechanism since quantum mechanics as currently observed provides for unexpected events spontaneously occurring with a very low probability. But that's where time probability gets weird: once you're dead time is meaningless. You can be dead for a 10^100 years, and its the same as being dead for 5 minutes. So if the universe (or multiverse) has some mechanism which generates new configurations of matter, then eventually it'll iterate a lot of perceptually indistinguishable versions of reality that from your subjective position will look the same. It gets even weirder because if you think about it, our universe has rules, so maybe not all configurations are allowed but this one we are currently experiencing definitely is, so it's recurrence is guaranteed provided there's no global limiting function we're unaware of.