The recursion of what most of us call common knowledge is endless: We know that they know that we know that they know, and so on.
No trivial matter, this form of communication is a likely driver of the very development of language so that humans could better coordinate.
So argues Steven Pinker, the public intellectual and Harvard cognitive psychologist, in his new book “When Everyone Knows That Everyone Knows: Common Knowledge and the Mysteries of Money, Power, and Everyday Life.”
Though no specific accusations appear to be public, the timing proved awkward. He’s one of several prominent intellectuals named in a tranche of new correspondence with notorious financier-pedophile Jeffrey Epstein. One of Pinker’s prominent book endorsements is Bill Gates, who is even more exposed.
I read the book before fully understanding this, and it’s not clear what it all means now. Though no great revelation, the book gathers perspective on a widely familiar concept.
Below my notes for future reference.
Continue reading How ‘common knowledge’ works