* * *
Next we tried sending a rat back. It made the trip through the Dirac sea and back undamaged. Then we tried a trained rat, one we borrowed from the psychology lab across the green without telling them what we wanted it for. Before its little trip it had been taught to run through a maze to get a piece of bacon. Afterwards, it ran the maze as fast as ever.
We still had to try it on a human. I volunteered myself and didn’t allow anyone to talk me out of it. By trying it on myself, I dodged the university regulations about experimenting on humans.
The dive into the negative energy sea felt like nothing at all. One moment I stood in the center of the loop of Renselz coils, watched by my two grad students and a technician; the next I was alone, and the clock had jumped back exactly one hour. Alone in a locked room with nothing but a camera and a clock, that moment was the high point of my life.
The moment when I first met Dancer was the low point. I was in Berkeley, a bar called “Trishia’s,” slowly getting trashed. I’d been doing that a lot, caught between omnipotence and despair. It was 1967. ’Frisco then – it was the middle of the hippy era – seemed somehow appropriate.
There was a girl, sitting at a table with a group from the university. I walked over to her table and invited myself to sit down. I told her she didn’t exist, that her whole world didn’t exist, it was all created by the fact that I was watching, and would disappear back into the sea of unreality as soon as I stopped looking. Her name was Lisa, and she argued back. Her friends, bored, wandered off, and in a while Lisa realized just how drunk I was. She dropped a bill on the table and walked out into the foggy night.
I followed her out. When she saw me following, she clutched her purse and bolted.
He was suddenly there under the streetlight. For a second I thought he was a girl. He had bright blue eyes and straight brown hair down to his shoulders. He wore an embroidered Indian shirt with a silver and turquoise medallion around his neck and a guitar slung across his back. He was lean, almost stringy, and moved like a dancer or a karate master. But it didn’t occur to me to be afraid of him.
He looked me over. “That won’t solve your problem, you know,” he said.
And instantly I was ashamed. I was no longer sure exactly what I’d had in mind or why I’d followed her. It had been years since I’d first fled my death, and I had come to think of others as unreal, since nothing I could do would permanently affect them. My head was spinning. I slid down the wall and sat down, hard, on the sidewalk. What had I come to?
He helped me back into the bar, fed me orange juice and pretzels, and got me to talk. I told him everything. Why not, since I could unsay anything I said, undo anything I did? But I had no urge to. He listened to it all, saying nothing. No one else had ever listened to the whole story before. I can’t explain the effect it had on me. For uncountable years I’d been alone, and then, if only for a moment.… It hit me with the intensity of a tab of acid. If only for a moment, I was not alone.
We left arm in arm. Half a block away, Dancer stopped, in front of the alley. It was dark.
“Something not quite right here.” His voice had a puzzled tone.
I pulled him back. “Hold on. You don’t want to go down there—” He pulled free and walked in. After a slight hesitation, I followed.
The alley smelled of old beer, mixed with garbage, urine, and stale vomit. In a moment, my eyes became adjusted to the dark.
Lisa was cringing in a corner behind some trash cans. Her clothes had been cut away with a knife, and lay scattered around. Blood showed dark on her thighs and one arm. She didn’t seem to see us. Dancer squatted down next to her and said something soft. She didn’t respond. He pulled off his shirt and wrapped it around her, then cradled her in his arms and picked her up. “Help me get her to my apartment.”
“Apartment, hell. We’d better call the police,” I said.
“Call the pigs? Are you crazy? You want them to rape her, too?”
I’d forgotten; this was the sixties. Between the two of us, we got her to Dancer’s VW bug and took her to his apartment in The Hashbury. He explained it to me quietly as we drove, a dark side of the summer of love that I’d not seen before. It was greasers, he said. They come down to Berkeley because they heard that hippy chicks gave it away free, and get nasty when they meet one who thought otherwise.
Her wounds were mostly superficial. Dancer cleaned her, put her in bed, and stayed up all night beside her, talking and crooning and making little reassuring noises. I slept on one of the mattresses in the hall. When I woke up in the morning, they were both in his bed. She was sleeping quietly. Dancer was awake, holding her. I was aware enough to realize that that was all he was doing, holding her, but still I felt a sharp pang of jealousy, and didn’t know which one of them it was that I was jealous of.
NOTES FOR A LECTURE ON TIME TRAVEL
The beginning of the twentieth century was a time of intellectual giants, whose likes will perhaps never again be equalled. Einstein had just invented relativity, Heisenberg and Schrödinger quantum mechanics, but nobody yet knew how to make the two theories consistent with each other. In 1930, a new person tackled the problem. His name was Paul Dirac. He was twenty-eight years old. He succeeded where the others had failed.
His theory was an unprecedented success, except for one small detail. According to Dirac’s theory, a particle could have either positive or negative energy. What did this mean, a particle of negative energy? How could something have negative energy? And why don’t ordinary – positive energy – particles fall down into these negative energy states, releasing a lot of free energy in the process?
You or I might have merely stipulated that it was impossible for an ordinary positive energy particle to make a transition to negative energy. But Dirac was not an ordinary man. He was a genius, the greatest physicist of all, and he had an answer. If every possible negative energy state was already occupied, a particle couldn’t drop into a negative energy state. Ah ha! So Dirac postulated that the entire universe is entirely filled with negative energy particles. They surround us, permeate us, in the vacuum of outer space and in the center of the earth, every possible place a particle could be. An infinitely dense “sea” of negative energy particles. The Dirac sea.
His argument had holes in it, but that comes later.
Once I went to visit the crucifixion. I took a jet from Santa Cruz to Tel Aviv, and a bus from Tel Aviv to Jerusalem. On a hill outside the city, I dove through the Dirac sea.
I arrived in my three-piece suit. No way to help that, unless I wanted to travel naked. The land was surprisingly green and fertile, more so than I’d expected. The hill was now a farm, covered with grape arbors and olive trees. I hid the coils behind some rocks and walked down to the road. I didn’t get far. Five minutes on the road, I ran into a group of people. They had dark hair, dark skin, and wore clean white tunics. Romans? Jews? Egyptians? How could I tell? They spoke to me, but I couldn’t understand a word. After a while two of them held me, while a third searched me. Were they robbers, searching for money? Romans, searching for some kind of identity papers? I realized how naïve I’d been to think I could just find appropriate dress and somehow blend in with the crowds. Finding nothing, the one who’d done the search carefully and methodically beat me up. At last he pushed me face down in the dirt. While the other two held me down, he pulled out a dagger and slashed through the tendons on the back of each leg. They were merciful, I guess. They left me with my life. Laughing and talking incomprehensibly among themselves, they walked away.
My legs were useless. One of my arms was broken. It took me four hours to crawl back up the hill, dragging myself with my good arm. Occasionally people would pass by on the road, studiously ignoring me. Once I reached the hiding place, pulling out the Renselz coils and wrapping them around me was pure agony. By the time I entered return on the keypad I was wavering in and out of consciousness. I finally managed to get it entered. From the Dirac sea the ripples converged and I was in my hotel room in Santa Cruz. The ceiling had started to fall in where the girders had burned through. Fire alarms shrieked and wailed, but there was no place to run. The room was filled with a dense, acrid smoke. Trying not to breathe, I punched out a code on the keypad, somewhen, anywhen other than that one instant and I was in the hotel room, five days before. I gasped for breath. The woman in the hotel bed shrieked and tried to pull the covers up. The man screwing her was too busy to pay any mind. They weren’t real anyway. I ignored them and paid a little more attention to where to go next. Back to ’65, I figured. I punched in the combo and was standing in an empty room on the thirtieth floor of a hotel just under construction. A full moon gleamed on the silhouettes of silent construction cranes. I flexed my legs experimentally. Already the memory of the pain was beginning to fade. That was reasonable, because it had never happened. Time travel. It’s not immortality, but it’s got to be the next best thing.