The question of personal identity is very intuitive, but very difficult to define. Deep down, what makes you you? John Locke was one of the philosophers who attempted to answer this question. He proposed a psychological theory to define personal identity. His theory certainly has merit, but it is not a correct definition of personal identity because there are counterexamples that cannot be explained. My argument will prove that Locke's theory of personal identity is false. Locke's theory states that A is identical to B if and only if B remembers at T2 something done or experienced by A at T1. He often uses the word "consciousness" to explain his theory, claiming that one can remember a past state of consciousness and relate it to one's current state of consciousness (Locke 367). I am currently aware of my introspective experience last Christmas, so I am the same person I was last Christmas, which is accurate. Memories are also very personal, so they are exclusive to the person who owns them. Even though two people may share a similar memory, they do not have the same memory....