When referring this topic, I will think of Poincaré return theorem

回复 @啊啊是谁都对：In physics, the Poincaré recurrence theoremstates that certain systems will, after a sufficiently long but finite time, return to a state arbitrarily close to, or exactly the same as, their initial state. So some people suppose, our universe will reoccur over and over again and both every organism on the earth

回复 @啊啊是谁都对：Yeah