historian, specializing in the Twentieth Century. No one else is likely to know that there was a time in which fingerprints were a valid means of identification." "I'm quite a guy, I suppose. Businessman, sportsman, historian." The man smiled bitterly. "All that ... but I still don't know who I am. And you can't help me." "Is it important?" asked the counselor softly. "This happens to many people, you know, and some of them do find out who they were, with or without our help. But this is not simple amnesia. No one who's been retroed can resume his former identity. Of course, if we had tapes of the factors which made each person what he is...." He shrugged. "But those tapes don't exist. Who knows, really, what caused him to develop as he has? Most of it isn't at the conscious level. At best, if you should learn who you were, you'd have to pick up the thread of your former activities and acquaintances slowly and painfully. "Maybe it would be better if you start from where you are. You know as much as you once did, and the information is up to date, correct and undistorted. You're younger, in a sense—in better physical condition, not so tense or nervous. Build up from that." "But I don't have a name." "Choose one temporarily. You can have it made permanent if it suits you." he man was silent, thinking. He looked up, not in despair, but not accepting all that the counselor said either. "What name? All I know is yours, and those of historical figures." "That's deliberate. We don't put names on tapes, because the effects can be misleading. Everyone has thousands of associations, and can mistake the name of a prominent scientist for his own. Names unconsciously arrived at are usually no help at all." "What do I do?" the man said. "If I don't know names, how can I choose one?" "We have a list made up for this purpose. Go through it slowly and consciously. When you come to something you like, take it. If you chance on one that stirs memories, or rather where memories ought to be but aren't, let me know. It may be a lead I can have traced." The man gazed at the counselor. His thought processes were fast, but erratic. He could race along a chain of reasoning and then stumble over a simple fact. The counselor ought to know what he was talking about—this was no isolated occurrence. The police had a