He ordered for both of them. The waitress scribbled on her pad in the odd characters of hangul, then looked from one of them to the other. "Twins," she said, pulling out a word she did know.

"Yeah," Justin said. Sort of, he thought. The waitress went away.

His younger self pointed at him. "Tell me one thing," he said.

"What?" Justin asked. He expected anything from What are you doing here? to What is the meaning of life?

But his younger self surprised him: "That the Rolling Stones aren't still touring by the time you're-I'm-forty."

"Well, no," Justin said. That was a pretty scary thought, when you got down to it. He and his younger self both laughed. They sounded just alike. We would, he thought.

The waitress came back with a couple of tall bottles of OB beer. She hadn't asked either one of them for an ID, for which Justin was duly grateful. His younger self kept quiet while she was around. After she'd gone away, himself-at-twenty-one said, "Okay, I believe you. I didn't think I would, but I do. You know too much-and you couldn't have pulled that quarter out of your ear from nowhere." He sipped at the Korean beer. He looked as if he would sooner have gone out and got drunk.

"That's right," Justin agreed. Stay in control. The more you sound like you know what you're doing, the more he'll think you know what you're doing. And he has to think that, or this won't fly.

His younger self drank beer faster than he did, and waved for a second tall one as soon as the first was empty. Justin frowned. He remembered drinking more in his twenties than he did at forty, but didn't care to have his nose rubbed in it.

He wouldn't have wanted to drive after two big OBs, but his younger self didn't seem to worry about it.