I. Will and his brother, Butch, lived under the same roof for 23 years without it ever dawning on either of them that living together was what they did. This was in Will’s house in Montana. Butch called it “Will’s house,” not “our house,” even after 23 years. At some point that Will could not remember, Butch stopped living out of his suitcase and got himself a chest of drawers and apparently—though Will didn’t notice them for some time—houseplants. It was by default that they raised a child toge