David Brin - Existence

To Tether Joe Carroll, who spins real space lariats

and

Doc Sheldon Brown, who teaches time travelers

and Ralph Vicinanza, who helped many dreams and dreamers to thrive.

CONTENTS

Part One:

Part Two:

Part Three:

Part Four:

Part Five:

Part Six:

Part Seven:

Part Eight:

PART ONE

SLINGS AND ARROWS

Those who ignore the mistakes of the future are bound to make them.

Joseph Miller

SPECIES

what matters? do i? or ai? + the question spins

+ /- as my body spins !/ + in time to a chirping window-bird

normal people dont think like this -/-/-

nor aspies -/- nor even most autistics

stop spinning! -/- there -/- now back to the holo-screen - >

rain smatters the clatter window

bird is gone -/ + hiding from falling water + +

like i hide from a falling civilization

what matters then?/? progress? New minds??

after cortex , after libraries , the web , mesh , ai-grid

whats next ?/!

will it offer hope/doom for foolish humanity + /?

for the glaring cobbly minds + /?

or autistic-hybrids like me + /?

I, AMPHORUM

The universe had two great halves.

A hemisphere of glittering stars surrounded Gerald on the right.

Blue-brown Earth took up the other side. Home, after this job was done. Cleaning the mess left by another generation.

Like a fetus in its sac, Gerald floated in a crystal shell, perched at the end of a long boom, some distance from the space station Endurance . Buffered from its throbbing pulse, this bubble was more space than station.

Here, he could focus on signals coming from a satellite hundreds of kilometers away. A long, narrow ribbon of whirling fiber, far overhead.

The bola. His lariat. His tool in an ongoing chore.

The bola is my arm.

The grabber is my hand.

Magnetic is the lever that I turn.

A planet is my fulcrum.

Most days, the little chant helped Gerald to focus on his jobthat of a glorified garbageman. There are still people who envy me. Millions, down in that film of sea and cloud and shore.

Some would be looking up right now, as nightfall rushed faster than sound across teeming Sumatra. Twilight was the best time to glimpse this big old station. It made him feel connected with humanity every time Endurance crossed the terminatorwhether dawn or duskknowing a few people still looked up.

Focus, Gerald. On the job.

Reaching out, extending his right arm fully along the line of his body, he tried again to adjust tension in that far-off, whirling cable, two thousand kilometers overhead, as if it were a languid extension of his own self.

And the cable replied. Feedback signals pulsed along Geralds neuro-sens suit but they felt wrong.

My fault, Gerald realized. The orders he sent to the slender satellite were too rapid, too impatient. Nearby, little Hachi complained with a screech. The other occupant of this inflated chamber wasnt happy.

All right. Gerald grimaced at the little figure, wearing its own neuro-sens outfit. Dont get your tail in a knot. Ill fix it.

Sometimes a monkey has more sense than a man.

Especially a man who looks so raggedy, Gerald thought. A chance glimpse of his reflection revealed how stained his elastic garment had becomefrom spilled drinks and maintenance fluids. His grizzled cheeks looked gaunt. Infested, even haunted, by bushy, unkempt eyebrows.

If I go home to Houston like this, the family wont even let me in our house . Though, with all my accumulated flight pay

Come on, focus!

Grimly, Gerald clicked down twice on his lower left premolar and three times on the right. His suit responded with another jolt of Slow Juice through a vein in his thigh. Coolness, a lassitude that should help clear thinking, spread through his body

and time seemed to crawl.

Feedback signals from the distant bola now had time to catch up. He felt more a part of the thirty kilometer strand, as it whirled ponderously in a higher orbit. Pulsing electric currents that throbbed up there were translated as a faint tingle down here, running from Geralds wrist, along his arm and shoulder, slanting across his back and then down to his left big toe, where they seemed to dig for leverage. When he pushed, the faraway cable-satellite responded, applying force against the planets magnetic field.

Tele-operation. In an era of ever more sophisticated artificial intelligence, some tasks still needed an old-fashioned human pilot. Even one who floated in a bubble, far below the real action.

Lets increase the current a bit. To notch down our rate of turn. A tingle in his toe represented several hundred amps of electricity, spewing from one end of the whirling tether, increasing magnetic drag. The great cable rotated across the stars a bit slower.

Hachilinked-in nearbyhooted querulously from his own web of support fibers. This was better, though the capuchin still needed convincing.

Cut me some slack, Gerald grumbled. I know what Im doing.

The computers dynamical model agreed with Hachi, though. It still forecast no easy grab when the tethers tip reached its brief rendezvous with whatever piece of space junk lay in Geralds sights.

Another tooth-tap command, and night closed in around him more completely, simulating what he would see if he were up there, hundreds of klicks higher, at the tethers speeding tip, where stars glittered more clearly. From that greater altitude, Earth seemed a much smaller disc, filling just a quarter of the sky.

Now, everything he heard, felt or saw came from the robotic cable. His lasso. A vine to swing upon, suspended from some distant constellation.

Once an ape always an ape.

The tether became Geralds body. An electric tingle along his spinea sleeting breezewas the Van Allen radiation wind, caught in magnetic belts that made a lethal sizzle of the middle-orbit heights, from nine hundred kilometers all the way out to thirty thousand or so.

The Bermuda Triangle of outer space. No mere human could survive in that realm for more than an hour. The Apollo astronauts accumulated half of all their allotted radiation dosage during a few minutes sprinting across the belt, toward the relative calm and safety of the Moon. Expensive communications satellites suffered more damage just passing through those middle altitudes than they would in a decade, higher up in placid geosynchronous orbit.

Ever since that brief time of bold lunar missionsand the even-briefer Zheng He erano astronaut had ventured beyond the radiation belt. Instead, they hunkered in safety, just above the atmosphere, while robots explored the solar system. This made Gerald the Far-Out Guy! With his bola for an arm, and the grabber for a hand, he reached beyond. Just a bit, into the maelstrom. No one else got as high.

Trawling for garbage.

All right, he murmured. Where are you?

Radar had the target pinpointed, about as well as machines could manage amid a crackling fog of charged particles. Position and trajectory kept jittering, evading a fix with slipperiness that seemed almost alive. Worsethough no one believed himGerald swore that orbits tended to shift in this creepy zone, by up to a few thousandths of a percent, translating into tens of meters. That could make a bola-snatch more artistic guesswork than physics. Computers still had lots to learn, before they took over this job from a couple of primates.

Hachi chirped excitedly.

Yeah, I see it. Gerald squinted, and optics at the tether-tip automatically magnified a glitter, just ahead. The target probably some piece of space junk, left here by an earlier, wastrel generation. Part of an exploding Russian second stage, perhaps. Or a connector ring from an Apollo flight. Maybe one of those capsules filled with human ashes that used to get fired out here, willy-nilly, during the burial-in-space fad. Or else the remnants of some foolish weapon experiment. Space Command claimed to have all the garbage radar charted and imaged down to a dozen centimeters.