 How does Conrad go back in time?
Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] No one, least of all Martin, could dispute that a man's life should be guarded by his kin—but by those who hadn't been born yet? He'd been a war baby, born of one of the tides of soldiers—enemies and allies, both—that had engulfed the country in successive waves and bought or taken the women. "He's dissatisfied with the current social order and killing you is part of an elaborate plan he's formulated to change it. Martin was told to call him Uncle Raymond. From time to time, there were other visitors—Uncles Ives and Bartholomew and Olaf, Aunts Ottillie and Grania and Lalage, and many more—all cousins to one another, he was told, all descendants of his. He had food to eat that he'd never dreamed of before, warm clothes that no one had ever worn before him. The non-glass part of the house was of neat, natural-toned wood, with a neat green lawn in front and a neat parti-colored garden in back. Though they were in the house with him, in their minds and in their talk they were living in another world—a world of warmth and peace and plenty where nobody worked, except in the government service or the essential professions. There was no devastation, no war, no unhappiness, none of the concomitants of normal living. It was then that Martin began to realize that either the whole lot of them were insane, or what Ninian had told him at first was the truth. When Martin was sixteen, Raymond took him aside for the talk Ninian had promised five years before. "The whole thing's all my brother Conrad's fault. His face was pallid, because he spent little time in the sun, and his speech rather overbred, his mentors from the future having carefully eradicated all current vulgarities. "And Conrad really got upset over the way Earth has been exploiting the not so intelligent life-forms on the other planets," Raymond continued. "We just come a couple of centuries or so later, that's all. We're virtually the same people ... although it is amazing what a difference two hundred odd years of progress and polish can make in a species, isn't it?" All that sort of thing comes from the out-system planets. And, on those worlds, it's far cheaper to use native labor than to ship out all that expensive machinery.
 Conrad built a time transmitter using a copy of Professor Farkas' plans.
 Conrad stole Professor Farkas' time transmitter to send himself back in time.  Professor Farkas sent him back in time with the time transmitter.  Conrad built a time transmitter using a copy of Professor Farkas' plans.  Professor Farkas' assistant sent Conrad back in time using the time transmitter after Conrad gave him a bribe.