Well the case is that our normal prescriptive preferences don't maximize possible futures. That's actually what we mean by prescriptive: they remove weight fro

Well the case is that our normal prescriptive preferences don't maximize possible futures. That's actually what we mean by prescriptive: they remove weight from futures we don't actually like, and give it to those we do. We call them "preferences" because they prescribe a non-maximum entropy (constrained, nonuniform) distribution over future events.