If you actually believed in the Truman Show hypothesis? Confirmation bias would provide a whole pile of evidence. Every time someone you know stutters, or someone stares at you from across the lunchroom, or the whole room goes quiet as you enter. Whenever there's been a car following you for more than three blocks, especially if it's a black SUV. Certain small things will happen by chance to support any theory. We'd argue that the same bias is likely responsible for most reports of miracles, by the way. [...] By "conclusive," I mean "assigning it probability of 1, not rounded or anything, just 1, there must be a god, case closed." But, rationalists don't believe that about any evidence, about anything. And we shouldn't, as you've been saying all this time about probability 0. The evidence I posited would, on the other hand, be extremely good rational evidence and I don't want to diminish that at all.