When our dog Rupert was a puppy, he was so afraid of going outside I’d have to drag him to the park. After getting him there one day, I foolishly let him off his leash. He sprinted home, back to his place of safety.

That experience reminded me of a man I met on a plane, who began apologizing to me as we taxied down the runway. “I’m going to get drunk on this flight,” he said. “It sounds like you don’t want to,” I replied. “I don’t,” he said, “but I always run back to the wine.” He got drunk, and…