# Talk:Common priors

From Lesswrongwiki

I strongly suspect that "common priors" means priors that are Wikipedia:common knowledge (logic), not just same priors. Please research it better. --Vladimir Nesov 20:05, 10 September 2009 (UTC)

- I had been given to understand that
*common priors*and*common knowledge*are distinct concepts and that the original Aumann result required both. "Agreeing to Disagree" opens: "If two people have the*same priors*, and their posteriors for a given event A are*common knowledge*, then these posteriors must be equal" (emphasis mine). But I'm by no means really up to speed on this literature, so I could be wrong. ---Z. M. Davis 03:30, 11 September 2009 (UTC)