Sure, but you have causal effects in your general vicinity that will persist a little while, not least effects that come back to change the originating brain.
Boltzmann brains have no past and approximately no future at all.
Boltzmann brains have no past and approximately no future at all.
Boltzmann brains experience meaning too. Not that is does them any good in the way that it does for biological system.
It's not like we have a planet rich in meaning and then the sun swallows the earth and all that meaning retroactively disappears. It just exists in the past, not the future, and I think that is sufficient.
I always thought it was funny when people thought that the heat-death of the universe had moral implications. Like that killing someone means they never existed, or something.
I don't think this view is uncommon, and I think people get there because they're just not thinking straight, but I don't know what they feel is at stake that they have to hold onto, that gets 'lost' if you accept that meaning doesn't persist through time forever.