Decision theory tells us that we should act as if the probability of getting different outcomes obeys the born rule. But this doesn't really scratch the itch of saying, i want to know why there's probabilities at all. A chip and i following ideas from le weidman pinpoint, where the necessity of probability is in the self locating uncertainty. D m i says: If regions across which a function can be analytically continued all contain the same information about the function, then quantum fields have analytic propert s. And how can a black hole in one region cause the information in different regions outside the event horizon to be paradoxically destroyed? Ah, i don't think the quantum fields