The last time I went to New York, I got off the plane and headed to the cab line and thought: wait a minute. The line is huge. And the cab is going to run me about sixty bucks. So, overcome with a sudden attack of parsimony, I took the train. Bought a metro card, the whole thing. Got out on 51st street, headed to my hotel, and when I checked in they asked, “Do you need any help with your bags, sir?” and I said...