"When Everyone Knows That Everyone Knows" is Steven Pinker's Worst Book

&#xA; When Everyone Knows That Everyone Knows is Steven Pinker&rsquo;s worst book, but it&rsquo;s still fascinating, especially if you&rsquo;re into logic and puzzles. &#xA; Disclosure: I&rsquo;ve read all of Pinker&rsquo;s books, and I gave them all five stars. I graduated from Harvard, where Pinker teaches. I received a free advanced copy of Everyone Knows That Everyone Knows from the publisher.…