"Let's try it," Burke interrupted. "It's something I worked out from the dream. Now I'll find out whether I'm crazy or not--maybe." He drew a deep breath. He had a sudden, deep and corrosive doubt of things which didn't make sense, like space signals and magnets which weren't magnets because they were capable of negative self-induction. "If this shows no sign of working, Sandy...." "What?" He didn't answer. He went heavily over to the table where he had storage-battery current available. He plucked a momentary-contact switch out of a drawer and connected it to the wires from the small thing he'd made. Then he hooked on the storage battery. "Stand back, Sandy," he said tiredly. "We'll see what happens." He flipped the momentary-contact switch. There was a crash and a roar. The six-inch thing leaped. It grazed Burke's head and drew blood. It flashed across the room, a full thirty feet, and then smashed a water-cooler and imbedded itself in the brick wall beyond. A tool cabinet tottered and crashed to the floor. The storage battery spouted steam, swelled. Burke grabbed Sandy and plunged outside with her as the building filled with vaporized battery acid. Outside, he put her down and rubbed his nose with his finger. "That was a surprise," he said with some animation. "Are you all right?" "You--could have been killed!" she said in a whisper. "I wasn't," said Burke. "If you're not hurt there's no harm done. It looks like the thing worked! Lucky that was only a millisecond contact! Negative self-induction.... I'll break some windows and come to the office." He did break windows, from the outside, so air could flow through the building and clear away the battery-acid steam. Sandy watched him anxiously. "Okay," he said. "I'll come quietly." He followed her to the office. He was so physically worn out, he tripped on the office step as he went in. "Tell me the news on the signals," he said. "Still coming in?" "Yes." She looked at him again, worried. "Joe ... Sit down. Here. What's happened?" "Nothing except that I'm a genius at second hand. I didn't intend it that way, and maybe it can be covered up, but I've turned out to be sane. So I think, maybe you'd better get another job. Since I'm sane I'll surely go bankrupt and maybe I'll end up in jail. But it's going to be interesting." His head drooped and he jerked it upright. "This is reaction," he said distinctly. "I'm tired. I wanted badly to find out whether I was crazy or not. I found out I haven't been. I'm not so sure I won't be presently." He made a stiff gesture and said, "Take the day off, Sandy. I'm going to rest awhile." Then his head fell forward and he was asleep. Burke slept for a long time. And this time dreamlessly.