Now he is sure he recognizes her. In fact, it is the only thing he is sure of, in the middle of this dateless world that at first stuns him with its affluence. When he recovers from his trance, the woman has gone. The experimenters tighten their control. They send him back out on the trail.
Time rolls back again, the moment returns.
This time he is close to her, he speaks to her. She welcomes him without surprise. They are without memories, without plans. Time builds itself painlessly around them. Their only landmarks are the flavor of the moment they are living and the markings on the walls.