Opening night brought Harry and Frank to my office. They tried to be casual, engaged me in desultory nothings. Frank looked reproachful—I was there too late.

The following night, Mel ambled in at midnight. He grinned, discussed a plot, suggested we go out for a beer, changed his mind, left.

The third night, I waited in the dark. Nor was I disappointed: Dex and Hazel showed.

"What do you want? It's 2 A.M.!"

There was a long regrouping pause; then Hazel said, "Dex has a fine idea."

"Well?"

"I've been thinking about gravity—"

"About time," I said sarcastically, disliking myself but hoping it would get rid of them, "we opened three days ago."

He ignored my petulance and grinned. "No, I meant anti-gravity. I think it's possible. If you had a superconductor in an inductance field—"

"Why tell me?"