[NoMoreNicksLeft]

None of these are even the interesting points. Arguing about whether you or I are a BB is meaningless.

What I want to know is this: will BBs exist in the immeasurably far future? If they will exist, how fast could they possibly think, how long could they last, and what is the limit on their intelligence? Could they comprehend their own existence from first principles? In the short instants that they exist, would they realize how short their life expectancy is?

>Two - based on well-accepted science - is that it is MUCH more likely for you to be a boltzmann brain than not.

We're not each individual BBs (and you're not a lonely BB imagining the rest of us). It's closer to the truth that our entire universe is one big BB that just blipped into existence one moment billions of years ago. If we accept the concept of a Boltzmann Brain at all, then it must be that some configurations of one where parts of the brain are disconnected from each other and each spawns and intelligence... or even just unintelligent matter/machinery. Scale that up to a few billion light years wide, and that's us.

[kelnos]

If a BB could exist, it could also represent a type of intelligence that is so foreign to our experience that we wouldn't even recognize it as such, even if it could last long enough for us to encounter and study it.

[NoMoreNicksLeft]

Very likely BBs can't exist in our current high-stability regime, and only in the post-matter universe where vacuum-decay-style events occur more often would they manifest. I think they're incredibly far future only. As for the type of intelligence, it seems probably that they'd be completely alien to us, yes, as there must be modes of intelligence other than that evolved my social monkeys. Don't expect any of them to be friendly (though, what sort of violence they could hope to commit is beyond me).