"How about reading minds?"
Larry's expression cleared. "Oh, you're remembering some of the things I said years ago. No, I can't do that either, Dick. Maybe, some day, if I keep working at this thing— Well, I can't right now. There are things I can do, though, that are just as good."
"Show me something you can do," I asked.
He smiled. Larry was enjoying himself; I didn't begrudge it to him. He had hugged this to himself for years, from the day he found his first clue, through the decade of proving and experimenting, almost always being wrong, but always getting closer.... He needed to talk about it. I think he was really glad that, at last, someone had found him out.
He said, "Show you something? Why, let's see, Dick." He looked around the room, then winked. "See that window?"
I looked. It opened with a slither of wood and a rumble of sash weights. It closed again.
"The radio," said Larry. There was a click and his little set turned itself on. "Watch it."
It disappeared and reappeared.