“I want to meet Dr. Gedanken,” I said, making it safely to the sidewalk. I looked back at David. He had gone back to the other side of the courtyard and was looking at Roy Rogers’s signature.

“Are you kidding? He doesn’t understand it any better than we do.”

“Well, at least he’s trying.”

“So am I. The problem is, how can one neutron interfere with itself, and why are there only two of Trigger’s hoofprints here?”

“It’s eight fifty-five,” I said. “I am going to the chaos seminar.”

“If you can find it,” he said, getting down on one knee to look at the signature.

“I’ll find it,” I said grimly. He stood up and grinned at me, his hands in his pockets. “It’s a great movie,” he said.

It was happening again. I turned and practically ran across the street.

“Benji IX is showing,” he shouted after me. “He accidentally exchanges bodies with a Siamese cat.”

Thursday, 9-10 P.M. “The Science of Chaos.” I. Durcheinander, University of Leipzig. A seminar on the structure of chaos. Principles of chaos will be discussed, including the Butterfly Effect, fractals, and insolid billowing. Clara Bow Room.

I couldn’t find the chaos seminar. The Clara Bow Room, where it was supposed to be, was empty. A meeting of vegetarians was next door in the Fatty Arbuckle Room, and all the other conference rooms were locked. The channeler was still in the ballroom. “Come!” she commanded when I opened the door. “Understanding awaits!” I went upstairs to bed.

I had forgotten to call Darlene. She would have left for Denver already, but I called her answering machine and told it the room number in case she picked up her messages. In the morning I would have to tell the front desk to give her a key. I went to bed.