[The following is in response to a deleted comment.]
You would need rather a large expanse of near-vacuum to avoid destabilizing the planet’s orbit as the chaos raced inward to fill the void, and vacuum is quite an ordered state.
I agree with you about the non-consecutive sense of identity, but that should imply that most Boltzmann thought-instants would have random, incoherent memories rather than complete, laws-of-physics-obeying memories. This is, I think, a much stronger argument for a “normal” sequential world than relative size/complexity of brains vs. solar systems, which I still think points in the other direction. I have poor intuitions for these sorts of scales though, so I could easily be mistaken, and maybe there’s something I’m not thinking of that would mean even non-consecutive Boltzmann brains would often have coherent memories (maybe the unlikeliness of coherent memories is dwarfed by the relative likeliness of momentary brains).
[The following is in response to a deleted comment.]
You would need rather a large expanse of near-vacuum to avoid destabilizing the planet’s orbit as the chaos raced inward to fill the void, and vacuum is quite an ordered state.
I agree with you about the non-consecutive sense of identity, but that should imply that most Boltzmann thought-instants would have random, incoherent memories rather than complete, laws-of-physics-obeying memories. This is, I think, a much stronger argument for a “normal” sequential world than relative size/complexity of brains vs. solar systems, which I still think points in the other direction. I have poor intuitions for these sorts of scales though, so I could easily be mistaken, and maybe there’s something I’m not thinking of that would mean even non-consecutive Boltzmann brains would often have coherent memories (maybe the unlikeliness of coherent memories is dwarfed by the relative likeliness of momentary brains).