“I can tell what you’re up to,” I said once when he returned to the head of the line. “What’s that?” “You pop back there when someone’s lagging, start up a conversation. You ask David about the properties of phosphor or Nadia about her freckles—” “I have never asked Nadia about her freckles.” “Or something. Then gradually you start to pick up the pace so that they’re walking faster.” “It seems to work better than jabbing them with a stick,” he said. “Less fun.”
