How to Change Your Mind

Abstract

It no longer is true in a metaphorical sense only that a person can have a change of heart. We might grant this much — allow that a person may have one heart at one time and have another (numerically different) heart at still another time — and also resist the idea that a person can have a change of mind in anything other than a qualitative sense. In the discussion that follows, this standard view of the matter is called into question. If the argument presented here is sound, it can happen both that one person has numerically different minds at different times and that different people have the same (one) mind at different times. These possibilities, as I take them to be, call for reassessment of some well entrenched assumptions concerning personal identity and responsibility. In particular, they suggest that it may not be true that person A bears responsibility for making decisions person B previously made only on the condition that A is the same person as B.