Regin Naylo faced his superior with a scowl. "That rips it wide open," he said.

Viggon Sarri smiled confidently. He glanced at Linus Brein and asked, "Just how competent do you think this new thing is?"

Linus shrugged. "We've analyzed the infrawave pattern they've developed. It is obvious that this is their first prototype of an infrawave space detector. The pattern is of the primitive absorptive type, which is both inefficient as a detector and is also inclined to produce spurious responses. From our observations, their equipment must be extremely complex too. It must be loaded to the scuppers with fragile circuits and components, because the search pattern keeps breaking down, or becoming irregular. An efficient detector cannot be made of the infrawave bands until the third order of reflective response is discovered. I doubt that any research team, no matter how big, can start with the primitive absorption phase of the infrawaves and leap to the higher orders of infrawave radiation in less than a lifetime of study."

"So, gentlemen?" asked Viggon of his two aides. "Can you predict whether or not their new detector will deliver the goods?"

All looked expectantly at Linus Brein.

"We've been recalculating our probabilities at the introduction of each new phase of their behaviour," Linus Brein said seriously. "From their actions, I would say that they do not know, grasp, or perhaps even guess that space has flaws and warps in the continuum. They have been going at their search in a pattern of solid geometrical precision, but have been paying no attention to those rifts, small as they are, that actually make a straight course bend aside for a distance. So due to the fact that their search pattern has already passed over one of these rifts in which the one lifeship lies, and passed beyond in their line of search, we have produced a nine-nines probability that they will not locate this lifeship."

"And the other?" prompted Viggon Sarri, with interest.

"I'm not done with the first yet," Linus Brein said quietly. "There remains the random search group. Therein lies the eight-oughts-one positive probability."

Viggon snorted. "I call ten to the minus ten chances rather hopeless. But go on, Linus."

"The other has a sixty-forty chance," he said. "If the infrawave detector locates the space rift that lies along our coordinate three seventy-six, when the ship is near seven sixty-seven, then the scout craft will pass within magnetic detection range of the lifeship. That's a lot of 'ifs', I know, but they add up to a sixty-forty chance. I say this because space rifts tend to produce strong responses in any of the primitive detecting gear. They've certainly been busy running down space warps, which indicates that they've been getting a lot of spurious responses." He smiled. "If space were entirely clear of foreign matter and space rifts, they'd find their new detector vaguely inefficient. I—"