Stranger in a Strange Land

obviously possess powers that I don't have and that I have never seen before. But a man can be a genius and still fall ill with delusions."
                "I know. Let me explain and you can decide whether or not I'm crazy. You know how the surveillance satellites used by the Security Forces operate."
                "No."
                "I don't mean the details that would interest Duke; I mean the general scheme. They orbit around the globe, picking up data and storing it. At a particular point, the Sky-Eye is keyed and it pours out in a spate all that it has seen. That is what was done with me. You know that we of the Nest use what is called telepathy."
                "I've been forced to believe it."
                "We do. By the way, this conversation is completely private-and besides that, no one of us would ever attempt to read you; I'm not sure we could. Even last night the link was through Dawn's mind, not yours."
                "Well, that is some slight comfort."
                "Uh, I want to get to that later. I am 'only an egg' in this art; the Old Ones are past masters. They stayed linked with me but left me on my own, ignored me-then they triggered me and all that I had seen and heard and done and felt and grokked poured out of me and became part of their permanent records. I don't mean that they wiped my mind of my experiences; they simply played the tape, so to speak, made a copy. But the triggering I was aware of-and it was over before I could possibly do anything to stop it. Then they dropped me, cut off the linkage; I couldn't even protest."
                "Well ... it seems to me that they used you pretty shabbily-"
                "Not by their standards. Nor would I have objected-I would have been happy to volunteer-had I known about it before I left Mars. But they didn't want me to know; they wanted me to see and grok without interference."
                "I was going to add," Jubal said, "that if you are free of this damnable invasion of your privacy now, then what harm has been done? It seems to me that you could have had a Martian at your elbow all these past two and a half years, with no harm other than attracting stares."
                Mike looked very sober. "Jubal, listen to a story. Listen all the way through." Mike told him of the destruction of the missing Fifth Planet of Sol, whose ruins are the asteroids. "Well, Jubal?"
                "It reminds me a little of the myths about the Flood."
                "No, Jubal. The Flood you aren't sure about. Are you sure about the destruction of Pompeii and Herculaneum?"
                "Oh, yes. Those are established historical facts."
                "Jubal, the destruction of the Fifth Planet by the Old Ones is as historically certain as that eruption of Vesuvius-and it is recorded in much greater detail. No myth. Fact."
                "Uh, stipulate it as such. Do I understand that you fear that the Old Ones of Mars will decide to give this planet the same treatment? Will you forgive me if I say that is a bit hard for me to swallow?"
                "Why, Jubal, it wouldn't take the Old Ones to do it. It merely takes a certain fundamental knowledge of physics, how matter is put together- and the same sort of control that you have seen me use time and again. Simply necessary first to grok what you want to manipulate. I can do it unassisted, right now. Say a piece near the core of the planet about a hundred miles in diameter-much bigger than necessary but we want to make this fast and painless, if only to please Jill. Feel out its size and place, then grok carefully how it is put together-" His face lost all expression as he talked and his eyeballs started to turn up.
                "Hey!" broke in Harshaw. "Cut it out! I don't know whether you can or you can't but I'm certain I don't want you to try!"
                The face of the Man from Mars became normal. "Why, I would never do it. For me, it would be a wrongness-I am human."
                "But not for them?"
                "Oh, no. The Old Ones might grok it as beauty. I don't know. Oh, I have the discipline to do it . . . but not the volition. Jill could do it-that is, she could contemplate the exact method. But she could never will to do it; she is human too; this is her planet. The essence of the