>>12888716>that 75% of all universes have quantum immortalityI should have written:
>that you have a 75% chance of being in a universe that has quantum immortalityI did the math and it turns out that you are almost correct only if we use the prior assumption that there is a ~50% chance you have quantum immortality (before having drank any LD50s). Worth noting is that this type of assumption can produce paradoxes, such as the water and wine paradox. Anyway, under this assumption, since LD50 means it has a 50% chance of killing you, you have a 25% chance of surviving twice, so you survive in 100% of the universes where you have QI, but only 25% of the ones where you don't. So 4/8 of the time, you have QI and survive, 1/8 of the time, you don't have QI and survive, and 3/8 of the time you don't have QI and die. You survived, so disregard the death scenarios, and only 1/5 of the time you don't have QI, so you'd have a 80% chance of QI. If P is your initially assumed probability of QI, then P/(1–P) is doubled every time you LD50, so if your prior assumption of P is non-zero, it will approach one, but if it is zero, it will stay zero. So in conclusion, if the probability of quantum immortality is P > 0, then you can become near-certain that you have QI with enough LD50s, but you have a (1–P) of dying in the process. You don't change reality, you just select out the versions of yourself where you have QI and the others die.
