"Check."

"So, as soon as Dad begins to get the best of the argument, the protector will step in," Kathryn continued, "and whether I can handle him alone or not depends on how high a higher-up they send in. So I'd like to have you all stand by for a minute or two, just in case."

How different was Kathryn's attitude now than it had been in the hyperspatial tube! And how well for Civilization that it was!

"Hold it, kids. I've got a thought," Kit suggested. "We've never done any teamwork since you became able to handle heavy stuff, and we'll have to get in some practice before the big blow-off. What say we link up now, on this?"

"Oh, yes!" "Let's do!" "Take over, Kit!" Three approvals came as one, and:

"QX," came Kathryn's less enthusiastic concurrence, a moment later. Naturally enough, she would rather do it alone if she could; but she had to admit that her brother's plan was the better.

Kit laid out the matrix and the four girls came in. There was a brief moment of snuggling and fitting; then each of the Five caught his breath in awe. This was new—brand new. Each had thought himself complete and full; each had supposed that much practice and at least some give-and-take would be necessary before they could work efficiently as a group. But this! This was the supposedly unattainable—perfection itself! This was UNITY—full; round; complete. No practice was or ever would be necessary. Not one micro-microsecond of doubt or of uncertainty would or ever could exist. This was the UNIT, a thing for which there are no words in any written or spoken language; a thing theretofore undreamed-of save as a purely theoretical concept in an unthinkably ancient, four-ply Arisian brain.

"U.m.n.g.n.k," Kit swallowed a lump as big as his fist before he could think. "This, kids, is really some—"

"Ah, children, you have done it." Mentor's thought rolled smoothly in. "You now understand why I could not attempt to describe the Unit to any one of you. This is the culminating moment of my life—of our lives, we may now say. For the first time in more years than you can understand, we are at last sure that our lives have not been lived in vain. But attend—that for which you are waiting will soon be here."

"What is it?" "Who?" "Tell us how to—"