If I’m to avoid succumbing to  jet lag, I should get out of the hotel room and move around. Having gotten up at three a.m. and finished, more or less, with my work for the day, I decide to take the afternoon off. So far, I’ve spent my drowsy evenings in an uncommonly relaxed Tokyo (it being Golden Week) shopping for eyeglasses for my wife, in Shinjuku, and pajamas for my kids, in Ginza. Today, though, I have for myself. It’s a straight shot on the Tozai Line from Iidabashi to Nakano and gets there in 22 minutes, so why not?