Modern Interpretation: So you know how it works. There's those sneakers you always wanted — the Grails, if you were — then the ones you wouldn't buy if they were 150 percent off, and others that you're just totally indifferent about. But there's a fourth category as well. You're scrolling through the blogs or your Twitter feed, you see a pair of sneakers, and all of a sudden you need them more than anything in the world. Just slow down for a minute, will you? If you didn't know about them at all yesterday, you don't need to have them by tomorrow.