"The qualities of radar," Garr Symm said, "exist in their totality in a universe of extension. Time, actually is a drawback to radar, necessitating a duration-lag between sending and receiving. Therefore, Ramar Chind, radar behaves perfectly in hyper-space, as you see." "Yes," Ramar Chind said, floating near the radar screen aboard the _Dog Star_. At its precise center was a bright little pip of light. _The Enterprise_.... "But don't we do anything except follow them?" Ramar Chind said after a long silence. Garr Symm smiled. "Does it really matter? You see, Chind, time actually stands still for us here. Duration is purely subjective, so what's your hurry?" Ramar Chind licked his lips nervously and stared fascinated at the little pip of bright light. Which suddenly dipped and swung erratically. * * * * * "What is it?" Margot asked. "What's the matter?" "Take it easy," Ramsey told her. "But the ship's swooping. I can feel it. I thought you weren't supposed to feel movement in hyper-space!" "Relax, will you? There are eddies in hyper-space, that's all. If you want an analogy in terms of our own universe, think of shoals in an ocean--unmarked by buoys or lights." "You mean they have to be avoided?" "Yes." "But this particular shoal--it's midway between Irwadi and Earth?" "There isn't any 'midway,' Margot. That's the paradox of hyper-space." "I--I don't understand." "Look. In the normal universe, extension is measured by time. That is, it takes a certain amount of time to get from point A to point B. Conversely, time is measured by extension in space. On Earth, a day of time passes when Earth moves through space on an arc one three-hundred-sixty-fifth of its orbit around the sun in length. Since there isn't any time to measure extension with in hyper-space, since time doesn't exist here, you can't speak of mid-points." "But this--shoal. It's always encountered in hyper-space between Earth and Irwadi?" Ramsey nodded. "Yes, that is right." Margot smiled. The smile suddenly froze on her face. The _Enterprise_ lurched as if an unseen giant hand had slapped it. At that moment Ramsey leaned forward over the controls, battling to bring the _Enterprise_ back on course. And let down his mental guard. _... precise place in hyper-space her father must have meant ... home of proto-man ... thinks I'm going to stop there, she's crazy ... heck, I'm no mystic, but there are things not meant to be meddled with ..._ The ship swooped again. Ramsey went forward against the control panel head-first and fell dazed from the pilot chair. His head whirled, his arms and legs were suddenly weak and rubbery. He tried to stand up and make his way back to the controls again, but collapsed and went down to his knees. He crouched there, trying to shake the fog from his brain.