Of all the utterly improbable things that happened tonight, perhaps the most improbable happened when my taxi cab stopped in front of my house. The fare, including tip, was about $13; I handed the cabbie a $20 and asked for change back. He handed me a $10, and then asked me if I had $3 in singles. I checked my wallet and unfortunately had to report back that all I had left were $20s; he smiled and said, “That’s ok,” and waved me out of his cab, leaving me holding a $10 bill as change for a $13 fare.