Can typicality arguments dissolve cosmology’s flatness problem?

Casey Mccoy

Research output: Contribution to journalArticlepeer-review


Several physicists, among them Hawking, Page, Coule, and Carroll, have argued against the probabilistic intuitions underlying fine-tuning arguments in cosmology and instead propose that the canonical measure on the phase space of Friedman-Robertson-Walker spacetimes should be used to evaluate fine-tuning. They claim that flat spacetimes in this set are actually typical on this natural measure and that therefore the flatness problem is illusory. I argue that they misinterpret typicality in this phase space and, moreover, that no conclusion can be drawn at all about the flatness problem by using the canonical measure alone.
Original languageEnglish
Pages (from-to)1239-1252
JournalPhilosophy of Science
Issue number5
Publication statusPublished - 31 Dec 2017


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