Other Worlds Than These

Birha felt a loosening of her body, as though her joints and tendons were coming apart, without pain. If she breathed out too hard, she might fling herself all over the cosmos. Her heart was beating in an unfamiliar rhythm. She put her hand in her pocket and took some coins out. Carefully she tossed each one in the air. Thirteen coins came down on the floor, all heads.

“There’s nothing wrong with you,” she told the aviator. “It’s the machine. It’s an alien artifact that changes the probabilities of things. We’re standing in the leakage field. Look, just come with me. You’ll be all right.”

She led him into the light. The round door was propped open by a steel rod and there were crowds of people waiting at the foot of the ladder. The young man was still dazed.

“It tickled,” he said. “My hand. When it went through the pillar.”

A Rumination on the Aliens

What do we know about them? We know now they are not dead. They went through the great probability machine, the actualizer, to another place, a place we’ll never find. The old pictures show that they had pale brown, segmented bodies, with a skeletal frame that allowed them to stand upright. They were larger than us but not by much, and they had feelers on their heads and light-sensitive regions beneath the feelers, and several limbs. They knew time and space, and as their culture was centered around sound, so was their mathematics centered around probability. Their ancient cities are filled with ruined acoustical devices, enormous poeticas, windchimes, and Aeolian harps as large as a building. Their music is strange but pleasant to humans, although its frequency range goes beyond what we can hear. When I was just an acolyte at the university, I chose to study what scripts were left after the war. They were acoustical scripts, corresponding to the notes in a row of poeticas on the main streets of their cities. I was drunk with discovery, in love with the aliens, overcome with sorrow that they were, as we thought then, all dead. For the first time since I had come to this planet, I felt at home.

To understand the aliens I became a mathematician and a musician. After that, those three things are one thing in my mind: the aliens, the mathematics, the music.

Rudrak’s Story

A bristleship, Rudrak told Birha, is like no other craft. It burrows into the heart of a star, enduring temperatures beyond imagination, and comes out on the other side whole and full of data. The current model was improved by Rudrak in his universe, a branch of the cosmic tree not unlike this one. He did it for his partner, Ubbiri, who was writing a thesis on white dwarf stars. Ubbiri had loved white dwarf stars since a cousin taught her a nursery rhyme about them when Ubbiri was small:

Why are you a star so dim
In the night beyond the rim
Don’t you want someone to love?
In the starry skies above?

Ubbiri had to write a thesis on white dwarf stars. As dictated by academic custom in that culture, her thesis had to connect the six points of the Wheel of Knowing: Meta-networking, Undulant Theory, Fine-Jump Mathematics, Time-Bundles, Poetry, and Love. To enable her to achieve deep-knowing and to therefore truly love the star, she took a ride on the new bristleship with Rudrak. They discovered that when the ship went through the starry core, it entered another reality. This was later called the shadow universe of stars, where their existence and life history is recorded in patterns that no human has completely understood. Some poets call this reality the star’s memory- space, or its consciousness, but Ubbiri thought that was extending metaphor beyond sense. The data from the bristleship told her that this star, this love, had been a golden star in its youth and middle age, harboring six planets (two of which had hosted life), and much space debris. In the late season of its existence it had soared in largeness, dimming and reddening, swallowing its planetary children. Now it was content to bank its fires until death.

After this discovery, Rudrak said, the two of them lived quiet lives that were rich and full. But one day before he was due to take off for another test flight, Ubbiri noticed there was a crack on the heat-shielded viewscreen of the bristleship. Rudrak tested it and repaired it, but Ubbiri was haunted by the possibility of the tiny crack spreading like a web across the viewscreen, and breaking up just as Rudrak was in the star’s heart.

Perhaps that was what she thought when Rudrak disappeared. Rudrak only knew that instead of passing through the shadow universe before coming out, the bristleship took him somewhere else, to a universe so close to his own that he did not know the difference until he had crashlanded on a planet (this planet) and been directed to people who knew the truth. They led him to Birha, who sheltered him for fifteen days, allowed him to mourn and to come slowly to life again. Each time, she sent him back to his universe, as protocol demanded, by way of the alien probability machine, the actualizer. Somehow he was caught in a time-loop that took him back to the day before the ill-fated expedition. He had returned to her in exactly the same way nine times. His return visits were not predictable, being apparently randomly spaced, and her current (and last) calculation was an attempt to predict when he would come next.

Each visit was the same and not the same. Surely he had had less gray hair the last time? And that healed cut on his hand—hadn’t that been from his last trip, when he was trying to help her cut fruit and the knife had slipped? And hadn’t his accent improved just a little bit since last time? They’d had to teach him the language each visit as though it was new, but perhaps it became just a hair’s breadth easier each time?

She tried to make each experience subtly different for him. She was afraid that too drastic a change might upset whatever delicate process was at work in the time-loop. He was like a leaf caught in an eddy—push too hard and the time stream might take him over a precipice. But a little tug here, a tug there, and perhaps he’d land safely on a shore, of this universe or that one.

So far nothing had worked. His bewilderment was the same, each time he appeared on her doorstep, and so was his grief. It was only these small, insignificant things that were different. One time he wore an embroidered collar, another time a plain one. Or the color of his shirt was different.

Birha worked on her calculations, but the kalpa-vriksh gave senseless, contradictory answers.

A Rumination on Timmar’s Rock

I remember when I first came to the university, I used to pass a flat-topped boulder on the way to class. There was a depression on the flat surface of the rock in the exact shape of the bottom of a water bowl. When I met Thirru, he told me that the great Timmar Rayan, who had founded the School of Wind and Water, had sat there in daily meditation for three entire cycles, placing his water bowl in the same spot every time. Over the years the depression had developed. I have always marveled that something as unyielding as rock can give way before sheer habit, or regularity, or persistence, whatever you might call it.

Practice, whether in mathematics or in love, changes things.

Sometimes.

Ubbiri’s Arrival

It was one thing to realize that the alien device in the center of the chamber was some kind of probability- altering machine. That it was the fabled actualizer hinted at in alien manuscripts, which she had always thought of as myth, was quite another thing. This knowledge she owed to Ubbiri, who was discovered lying on the floor of the chamber not three days after Birha had first opened the round door. Ubbiri was immediately incarcerated for questioning and only after several ten-days, when her language had been deciphered and encrypted into a translation device, had Birha been allowed to speak to her. They said the old woman was mad, babbling about shadow universes and tearing at her silver hair, but Birha found her remarkably sane. Ubbiri told her that she had tired of waiting for her partner, who had disappeared during a flight through a certain white-dwarf star, and when he didn’t return, she had taken an old-model bristleship and dived into the heart of the star. When the ship passed through the core she defied its protestations and stepped out of it, seeking either him or death in the shadowy depths of the other reality. Instead she found herself lying on the floor of the chamber, aged beyond her years.

Over the course of four ten-days of conversation, Birha determined that the constants of nature were a hair’s breadth different where Ubbiri came from, so it was very likely another universe entirely. She realized then that the machine at the center of the room did not merely change probabilities. It was an actualizer: a probability wave interference machine, and the portal inside it led to whatever branch of the kalpa-vriksh you created by changing