Personal Identity: Memory

According to Leibniz's Law, if there be any two separate properties, then those two properties must be the same. This is what has become known as Cross-Temporal Identity. Therefore, Ash 1 and Ash 2 had to be the same person because it was hard to tell them apart. They both possessed the same physiological human characteristics by their skin, hair, eyes, nose, etc. That is to say, it was very hard to tell them apart in the film. Therefore, if Ash 1 and Ash 2 were the same then it was the same person Martha was referring to when she told him to jump from the hill because of her own disbelief. However, since the first Ash was human, and the second Ash was a robot, Leibniz's Law proves that they were different. I believe Ash 1 didn't morph into Ash 2 because this is unlikely. There had to be some sort of machine or time travel that made it possible.




I believe that Ash 1 and Ash 2 were indeed two different species. According to Locke's theory on personal identity, two people are the same if the first person remembers who he once was before along a chain of memories. Sure, Ash 1 did come from Ash 2 which could be a possible argument for them being alike. However, only Ash's physical characteristics were the same, not who he was. Ash had to become a robot by some sort of artificialness. Reasonably, I can assume that he didn't remember who he was because Martha urged him to jump from the hill at the end of the movie.