I was reading that book below to start to find the answer to a specific question. It wasn’t in there as I think the work was too basic for what I want to know1 — but I did (obviously) think the quote was interesting. (And no, the answer is not on the internet.)
But I think I might be able to amble toward an answer in the next book up: Einstein’s Entanglement: Bell Inequalities, Relativity, and the Qubit, combined with some other works. Basically, I want to know that since the Bell inequalities are violated by quantum entanglement, could earlier-than-expected decohorence imply that there might be a lot of primordial black holes out there of microscopic size that we can’t “see” in the CMB data?
(Be vewwy vewwy quiet. I’m hunting dark matter.)