And that hypothesis is one that Anthropic decision theory whacks. It ignores Boltzmann brains, not because they’re unlikely (though they are, arguably, less likely that the standard evolution of life on Earth), but because your decision makes no difference if you’re Boltzmann brain, so you may as well ignore that possibility.
This is called the Boltzmann Brain hypothesis.
And that hypothesis is one that Anthropic decision theory whacks. It ignores Boltzmann brains, not because they’re unlikely (though they are, arguably, less likely that the standard evolution of life on Earth), but because your decision makes no difference if you’re Boltzmann brain, so you may as well ignore that possibility.