"And you ESP the twisted cube all together the same way you did Klein's Bottle. Now if you do that big enough, all around you, so you're sort of half twisted in the middle, then you can TP yourself anywhere you want to go. And that's all there is to it," she finished hurriedly. "Where have you gone?" I asked her quietly. The technique of doing it would take some thinking. I knew enough physics to know that was the way the dimensions were built up. The line, the plane, the cube--Euclidian physics. The Moebius Strip, the Klein Bottle, the unnamed twisted cube--Einsteinian physics. Yes, it was possible. "Oh, we've gone all over," Star answered vaguely. "The Romans and the Egyptians--places like that." "You picked up a coin in one of those places?" Jim asked. He was doing a good job of keeping his voice casual. I knew the excitement he must be feeling, the vision of the wealth of knowledge which must be opening before his eyes. "I found it, Daddy," Star answered Jim's question. She was about to cry. "I found it in the dirt, and Robert was about to catch me. I forgot I had it when I went away from there so fast." She looked at me pleadingly. "I didn't mean to steal it, Daddy. I never stole anything, anywhere. And I was going to take it back and put it right where I found it. Truly I was. But I dropped it again, and then I ESP'd that you had it. I guess I was awful naughty." I brushed my hand across my forehead. "Let's skip the question of good and bad for a minute," I said, my head throbbing. "What about this business of going into the future?" * * * * * Robert spoke up, his eyes shining. "There isn't any future, Mr. Holmes. That's what I keep telling Star, but she can't reason--she's just a girl. It'll all pass. Everything is always past." Jim stared at him, as though thunderstruck, and opened his mouth in protest. I shook my head warningly. "Suppose you tell me about that, Robert," I said. "Well," he began on a rising note, frowning, "it's kinda hard to explain at that. Star's a Bright and even she doesn't understand it exactly. But, you see, I'm older." He looked at her with superiority. Then, with a change of mood, he defended her. "But when she gets as old as I am, she'll understand it okay." He patted her shoulder consolingly. He was all of six years old. "You go back into the past. Back past Egypt and Atlantis. That's recent," he said with scorn. "And on back, and on back, and all of a sudden it's future." "That isn't the way _I_ did it." Star tossed her head contrarily. "I _reasoned_ the future. I reasoned what would come next, and I went there, and then I reasoned again. And on and on. I can, too, reason."