Which of them feel wrong to you? I agree with all them other than 3b, which I’m unsure about—I think it this comment does a good job at unpacking things.
2a is Katja Grace’s Doomsday argument. I think 2aii and 2aiii depends on whether we’re allowing simulations; if faster expansion speed (either the cosmic speed limit or engineering limit on expansion) meant more ancestor simulations then this could cancel out the fact that faster expanding civilizations prevent more alien civilizations coming in to existence.
I deeply sympathize with the presumptuous philosopher but 1a feels weird.
2a was meant to be conditional on non-simulation.
Actually putting numbers on 2a (I have a post on this coming soon), the anthropic update seems to say (conditional on non-simulation) there’s almost certainly lots of aliens all of which are quiet, which feels really surprising.
To clarify what I meant on 3b: maybe “you live in a simulation” can explain why the universe looks old better than “uh, I guess all of the aliens were quiet” can.
I deeply sympathize with the presumptuous philosopher but 1a feels weird.
Yep! I have the same intuition
Actually putting numbers on 2a (I have a post on this coming soon), the anthropic update seems to say (conditional on non-simulation) there’s almost certainly lots of aliens all of which are quiet, which feels really surprising.
Which of them feel wrong to you? I agree with all them other than 3b, which I’m unsure about—I think it this comment does a good job at unpacking things.
2a is Katja Grace’s Doomsday argument. I think 2aii and 2aiii depends on whether we’re allowing simulations; if faster expansion speed (either the cosmic speed limit or engineering limit on expansion) meant more ancestor simulations then this could cancel out the fact that faster expanding civilizations prevent more alien civilizations coming in to existence.
I deeply sympathize with the presumptuous philosopher but 1a feels weird.
2a was meant to be conditional on non-simulation.
Actually putting numbers on 2a (I have a post on this coming soon), the anthropic update seems to say (conditional on non-simulation) there’s almost certainly lots of aliens all of which are quiet, which feels really surprising.
To clarify what I meant on 3b: maybe “you live in a simulation” can explain why the universe looks old better than “uh, I guess all of the aliens were quiet” can.
Yep! I have the same intuition
Nice! I look forward to seeing this. I did similar analysis—both considering SIA + no simulations and SIA + simulations in my work on grabby aliens