Jordan Ellenberg - child prodigy, young adult novelist, theoretical mathematician, and author of the hugely entertaining book, How Not to Be Wrong - pens a semi-frequent, always engaging column for Slate called Do the Math. Here readers will find articles on Nate Silver's applied probability, Stephen Colbert's mathematical limitations, and many other number-related topics. Ellenberg is a sharp writer and a brilliant thinker who writes about numerical obscurities in a way that brings them to life. He also brings his intellect to bear on media questions like just how seriously we should take this summer's enormous Facebook study, in which the social media giant attempted to manipulate users' moods.