Yesterday on the train, I went to the bathroom. There were a lot of people lining up, and I finally got to my turn. Then, from inside—some pretty girl, really—came out. She shook her hands, and a few drops of water splashed onto my face. I said impatiently, “You just washed your hands—don’t shake them around.” She didn’t pay me any attention and walked away. Later, when I went in and turned on the faucet, there wasn’t a single drop of water coming out…