Every two weeks or so, I pack up my Taylor acoustic guitar, fill my backpack with CDs of my music, and head down into the New York City subways to busk away. I make good money, and I get to watch and study people, too. For example, I can now tell from about 50 feet away whether a woman is likely to give me money.
If she's walking fast, wearing headphones, angrily porting a briefcase, or chasing down one… more