You've probably got the standard seven-dice Dungeons & Dragons collection of a d4, d6, d8, d10, d12, d20 and that goofy 10-sided percentile die. Now throw them all away and put in an order for The ...

NAPA, CALIFORNIA—Armed with a set of 10-sided dice (we’ll get to those in a moment), an online Web tool, and a stack of hundreds of ballots, University of California-Berkeley statistics ...