What You Hear If You Make a Point of Eavesdropping in New York

On a scorching September afternoon, Morgan Friedman, semi-professional wanderer, must stop. We’ve been moseying through Brooklyn neighborhoods for nearly two hours, because I wanted to know how Mr. Friedman, who’s achieved mild fame for knowing how to find the pulse of New York City, works. But now he needs a little nourishment – and, he is unashamed to admit, a little A/C.