Abstract

Parfit's reductionist theory of personal identity states that a person's persistence through time is just a matter of psychological continuity and connectedness. He uses this theory to argue against the requirement of equal concern: the view that a rational person should be equally concerned about all parts of her future. The argument is that since psychological connectedness is one of grounds of a person's concern for her future and since connectedness is weaker over longer periods, it follows that a person can rationally care less about her more distant future. I argue that Parfit's argument fails because the principles it employs generate counterexamples. I conclude by showing that if Parfit's view is modified so as to avoid these counterexamples, his argument against the requirement dissolves