Self-indication assumption doomsday argument rebuttal

The self-indication assumption (SIA) represents one of the major objections to the doomsday argument (DA). The doomsday argument states that humanity is unlikely to survive for long, as it would imply that current humans are implausibly early in the history of humanity. The SIA states that the chance of being born is not one, but an increasing function of the number of people who will be born. Under the SIA, it is more likely to be born in a world that with a larger total population, which counteracts the DA.

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