🫧 Open on Bubbles One of the most popular posts in this blog’s history was Common Knowledge and Aumann’s Agreement Theorem , based on a lecture that I gave to high-school students 11 years ago. One of the impacts of that post, I’m proud to say, is that (according to Steven Pinker) it helped to inspire Steve’s excellent recent popular book, which you should read, entitled What Everyone Knows That Everyone Knows…: Common Knowledge and the Mysteries of Money, Power, and Everyday Life . Two weeks ago, I was pri