In the time it takes for one cell division to occur, it could be that this cell entraps a different chemical composition of the cytoplasm then this entraps, and that's a well known concept.

当一个细胞分裂发生期间,很可能这个细胞截留了一种不同的,细胞质化学组分,这种非对称分裂是一个广为人知的概念

耶鲁公开课 - 生物医学工程探索课程节选

Maybe A could be the same thing as B in this logically possible world, but we could imagine a completely different logically coherent world in which A was not the same thing as B.

也许在这某个逻辑世界里,A会和B是同一个东西,但我们可以想象,一个完全不同的另一个逻辑世界里,A和B不是同一个东西

耶鲁公开课 - 死亡课程节选