"Mark Zuckerberg wants people to understand common knowledge. What's common knowledge?"
"Why Facebook is a Lot Like Listerine"
"Mark Zuckerberg hopes this book will help shape his vision for Facebook."
"Is it rational to watch the Oscars?"
"Sometimes taking action requires knowing that other people know what you know (and that they know that you know). This is what UCLA economist Michael Chwe calls a 'coordination problem.' "