From Time's review of a new book called The Wisdom of Crowds:

Surowiecki describes a 1958 experiment in which a group of law students from New Haven, Conn., were asked to consider this scenario: You have to meet someone in New York City but don't know where to meet him or when. You cannot talk to the other person ahead of time. Where do you go, and when? The collective wisdom overwhelmingly answered: the Grand Central Terminal information booth, at noon.

Of course, this reminds me of my favorite Yale law student, whom I've often met at this very spot!