The street I live on is short and narrow. When I walk out of the old apartment building where I’ve lived for the past thirty-three years, I can go either north or south. On such a tiny street, this is a pretty inconsequential choice—thirty yards this way or the other. Still, the logical thing would be for my destination to dictate which way to turn: if the destination is north of my apartment, I should turn left; if it’s to the south, then right.