@dpwiz What is this "usual expected value decay by probability"? If you think it's possible that there will be a countably infinite set of people in the universe (I can't reject this hypothesis because we don't know all rules of physics of our universe) and try to apply total utilitarianism, expected utility will not exist because the corresponding sum over this infinite set will not converge.
@p future value has non-zero probability of failure because ever-increasing number of factors that can prevent it from fruition.
Something being further in the future means longer causal chain where each step can fail.
@dpwiz So you're thinking something like the universe is ticking and has a nearly constant probability to end with each tick? That doesn't seem reasonable to me.
I think there's a nonzero probability that the rules of physics (the territory, not the map) are made so that it will be ticking forever and it will be possible for conscious being to not stop existing. But in this case the expected utility is undefined.
@dpwiz If physics are in such way that it's impossible to make a bomb that'll go a VERY BIG BIG BADA BOOM, then launch dem Von Neumann probes and nothing might go wrong with them with a large portion of them in one hundred years. In my opinion the probability that we're living in such a universe is nonzero.