I think you're trying to articulate is the Anthropic principle [1]. It basically states that the probability that "some" life exists is 1. I'm not sure what t

I think you're trying to articulate is the Anthropic principle [1]. It basically states that the probability that "some" life exists is 1. I'm not sure what the name of this next one is, but I believe it's a widely defended scientific principle that we're "typical" in some sense. This principle gets hard to justify cosmologically (it reduces to Occam's Razor locally), but it makes sense to me. It rejects very clearly some quirks like the Bolztmann Brain [2] argument. [1] http://en.wikipedia.org/wiki/Anthropic_principle http://en.wikipedia.org/wiki/Anthropic_principle [2] http://en.wikipedia.org/wiki/Boltzmann_brain http://en.wikipedia.org/wiki/Boltzmann_brain