My grandfather cracks open his bedroom door and pushes his face carefully into the thin crease between the door and the frame.My mother is in the hallway.“Hi, Dad,” she says to his eye, backlit against a slice of bedroom light. “Come on out, Dad. It’s okay.”The crease collapses as my grandfather shuts the door. Then, it slowly opens again, just enough to see his eye peering into the crease. His eye hits my mother’s once again, a dart to a bullseye. “Come out, Dad. It’s okay.”The door shuts.