"Yes lad, I know. But those rough figures will serve for the present comparison." He turned back to me. "Keep that in mind, Frank. Now conceive Brett and Martt changing progressively upward in size, from what they are here on earth, to a size normal to that girl and the realm she lives in. A corresponding Time-change must take place. At every point of the voyage in Time and size, the relative values must agree; the vehicle's Time-rate always must be in inverse proportion to its position in size." I nodded. "I think I understand. You mean that when in size the vehicle had progressed half-way from our size to the girl's, that then the vehicle's normal Time-rate would be half-way between our Time and hers?" "Exactly, Frank." "At this ten-mile size what percentage of the size-journey had been made?" I asked. I smiled. "I'm trying to imagine how large that girl may be." Brett said quickly, "I'll tell you that later. It was some distance farther on before I could calculate such relative values even as approximations." Frannie said, "At that point, Brett, the vehicle began speeding into the earth's future, didn't it?" Dr. Gryce exclaimed: "Child, that will only lead us into philosophical discussion. Beyond the realm of mathematics----" "I don't think so, Father," Brett said quietly. "I would say that since everything--Size, Time and Space--is relative, depending wholly on the viewpoint of the observer--that Frannie's question is simple enough. To me as observer--to my consciousness there in the vehicle--every given instant was the Present. The earth was out there in Space, revolving about its sun; rotating on its axis--its movements to my consciousness _faster_ than before. To me it was the Present. The earth was there. I saw it through the electro-telescope. I also saw your aural ray through the aurometer. The ray swept the sky with a rapid sweep, since to my altered Time-rate the earth was rotating faster. But every given instant was my Present. "However, compare my consciousness to yours on earth. The earth--rotating faster relative to me--had, while I watched there, made, let us say, a full rotation in that first five minutes of my vigil. Relative to me--it was the earth's future Time. I was gazing upon earth in its _tomorrow_. So I think that I was, as Frannie said, speeding into the earth's future." Frannie was triumphant. Dr. Gryce said smilingly, "You put it clearly, Brett. But it's a philosophical and metaphysical viewpoint nevertheless. You spoke of Saturn's having another apparent motion near the end of your size-change?"