was the inspiration for my own theory. So you can understand just how little I have contributed to the 'invention' of The Tension Energy-Dynamics Equations--" FitzJohn glanced at the first card and went on: "Let us consider, now, the possible permutations on the factor e/μ..." I yelled: "That's plenty. Cut!" and before the first word was out of my mouth the controller and the C-S were shouting, too. Yarr blanked out the crystal and brought up the lights. We were all on our feet, looking at each other excitedly. Yarr jumped up so fast his chair went over backward with a crash. We were in a fever because, boys, that day happened to be February 9, 2909, and we had just about two hours until evening. The controller said: "Can we locate these FitzJohns?" "In two hours? Don't be silly. We don't even know if they're named FitzJohn today." "Why not?" "They may have changed their name--it's getting to be a fad nowadays. The son may have changed his name as a part of that cover-up of his past. Heaven only knows why not--" "But we've got to split them up--whoever they are." The C-S said: "Take hold of yourself. How are we going to separate eleven million married people? Didn't you ever hear of Stability?" "Can't we publish a warning and order everybody out of the park?" "And let everybody know about the Prog Building?" I said. "You keep forgetting Stability." "Stability be damned! We can't let them have that conversation--and if they do anyway, we can't let them have that boy!" Groating was really angry. He said: "You'd better go home and read through the Credo. Even if it meant the salvation of the Universe I would not break up a marriage--nor would I harm the boy." "Then what do we do?" "Have patience. We'll think of something." I said: "Excuse me, sir--I've got an idea." "Forget ideas," the controller yelled, "we need action." "This is action." The C-S said: "Go ahead, Carmichael." "Well, obviously the important thing is to keep all married couples out of the north sector of Central Park tonight. Suppose we get a special detail of police together at once. Then we beat through the park and get everyone out. We can quarantine it--set up a close cordon around the park and guard it all night." The controller yelled: "It may be one of the policemen." "O.K., then we pick the unmarried ones. Furthermore, we give strict orders that all women are to stay away." The C-S said: "It might work--it'll have to work. We can't let that conversation take place." I said: "Excuse me, sir, do you happen to be married?" He grinned: "My wife's in Washington. I'll tell her to stay there." "And the controller, sir?" The controller said: "She'll stay home. What about yourself?" "Me? Strictly bachelor." Groating laughed. "Unfortunate, but excellent for tonight. Come, let's hurry." * * * * *