“I don’t know who you are,” he whispers. The young man strokes his forearm. “I’m Noah. You’re my grandpa. You taught me to cycle on the road outside your house and you loved my grandma so much that there wasn’t room for you in your own feet. She hated coriander but put up with you. You swore you would never stop smoking but you did when you became a father. You’ve been to space, because you’re a born adventurer, and once you went to your doctor and said, ‘Doctor, doctor! I’ve broken my arm in two places!’ and then the doctor told you that you should really stop going there.”