Presents the third part of a Shelly Kagan's class that speaks about metaphysics. The lecture focuses on the problems directly related to the personality theory as key to personal identity. The theory states that a person retains his or her individuality so long as he or she has the same ongoing personality. The main objection raised to this claim is the problem of duplication. The lecture explores cases in which the same personality has been transferred or exported to multiple bodiesEducação Superior::Ciências Humanas::Filosofia