As an aside: if you have strong enough priors that the real cosmology will be dominated by Boltzmann Brains, then observing that you indeed seem to be in a cosmology that will be BB dominated should increase your probability of being a real observer.
The original post makes the (true) claim that any coherent observations are evidence against being a BB. I’m making the pedantic point that if you are almost certain that the real universe is BB dominated, then observing that that is indeed true suggests you might not be a BB. (Conversely: a person convinced that the universe is BB dominated would take observations suggesting it wasn’t as increasing their likelihood of being a BB. (and also the likelihood that they’re wrong about cosmology, but I’m assuming that starts tiny))
As an aside: if you have strong enough priors that the real cosmology will be dominated by Boltzmann Brains, then observing that you indeed seem to be in a cosmology that will be BB dominated should increase your probability of being a real observer.
This exact point is raised and made in the original post, no?
The original post makes the (true) claim that any coherent observations are evidence against being a BB. I’m making the pedantic point that if you are almost certain that the real universe is BB dominated, then observing that that is indeed true suggests you might not be a BB.
(Conversely: a person convinced that the universe is BB dominated would take observations suggesting it wasn’t as increasing their likelihood of being a BB. (and also the likelihood that they’re wrong about cosmology, but I’m assuming that starts tiny))