Even Nick Bostrom, who is arguably the leading expert on anthropic problems, rejects SIA for a number of reasons (see his book Anthropic Bias). That alone is a pretty big blow to its credibility.
That is curious. Anyway, the self-indication assumption seems fairly straight-forwards (as much as any anthropic reasoning is, anyway). The critical material from Bostrom on the topic I have read seems unpersuasive. He doesn’t seem to “get” the motivation for the idea in the first place.
Even Nick Bostrom, who is arguably the leading expert on anthropic problems, rejects SIA for a number of reasons (see his book Anthropic Bias). That alone is a pretty big blow to its credibility.
That is curious. Anyway, the self-indication assumption seems fairly straight-forwards (as much as any anthropic reasoning is, anyway). The critical material from Bostrom on the topic I have read seems unpersuasive. He doesn’t seem to “get” the motivation for the idea in the first place.