The scientific method used in the times of ancient philosophy is interesting as it could not have any weight in modern society. They seem to debate theories over and over again until a new theory obliterates the last one. Reincarnation of the soul is as much a question today as it was then, as is the question of whether or not the soul actually exists. I think that, in Phaedo's discussion, philosophers are looking for a definitive definition of soul, but the fact is that the soul has many different parts and, frankly, could be anything