Self-Indication Assumption: The Possibility of Not Existing At All
One objection is that the possibility of your existing at all depends on how many humans will ever exist (N). If this is a high number, then the possibility of your existing is higher than if only a few humans will ever exist. Since you do indeed exist, this is evidence that the number of humans that will ever exist is high.
This objection, originally by Dennis Dieks (1992), is now known by Nick Bostrom's name for it: the "Self-Indication Assumption objection". It can be shown that some SIAs prevent any inference of N from n (the current population); for details of this argument from the Bayesian inference perspective see: Self-Indication Assumption Doomsday argument rebuttal.
Famous quotes containing the words existing and/or possibility:
“Our law very often reminds one of those outskirts of cities where you cannot for a long time tell how the streets come to wind about in so capricious and serpent-like a manner. At last it strikes you that they grew up, house by house, on the devious tracks of the old green lanes; and if you follow on to the existing fields, you may often find the change half complete.”
—Walter Bagehot (18261877)
“The self-righteous rule out the possibility that they are what has gone wrong.”
—Mason Cooley (b. 1927)