Nate Silver @NateSilver538
This is usually true, but late last summer in NYC—when the AC in many subway cars was broken—a 3-pronged equilibrium emerged wherein there were full cars, empty cars, and half-full cars. The half-full cars generally didn't have anything wrong with them, but sometimes they did. — PolitiTweet.org
Ben Walsh @BenDWalsh
There’s no market more efficient than the “why is this one subway car empty” market
