"Quit talking and start pushing," Pop prodded us. "This way you're getting nowhere fast. I can't stand hesitation, it riles my nerves."

Alice thought you ought to push ten buttons at once, using both hands, and she was working out patterns for me to try. But I was off on a kick about how we should darken the plane to see if any of the other buttons glowed beside the one with the Atla-Hi violet.

"Look here, you killed a big man to get this plane," Pop broke in, coming up behind me. "Are you going to use it for discussion groups or are you going to fly it?"

"Quiet," I told him. I'd got a new hunch and was using the dark glasses to scan the instrument panel. They didn't show anything.

"Dammit, I can't stand this any more," Pop said and reached a hand and arm between us and brought it down on about fifty buttons, I'd judge.

The other buttons just went down and up, but the Atla-Hi button went down and stayed down.

The violet blob of Atla-Hi on the screen got even brighter in the next few moments.

The door closed with a tiny thud.

We took off.