David Brin - Existence

“I will pack some things for the baby,” Mei Ling announced, with resolution in her voice. “We can leave all the rest. Everything.”

But the penguinoid stopped her. “I regret, wife and child cannot come. It is too dangerous. There are no accommodations and they will slow us down.” As Bin started to protest, it raised one stubby wing. “But you will not leave them to starve. I will provide part of your bonus now, in a form they can use.”

Bin blinked, staring as the machine settled down into a squat, closing its eyes and straining, almost as if it were…

With an audible grunt, it stepped back, revealing a small pellet on the tabletop. “You’ll find the funds readily accessible at any city kiosk. As I said, the amount, though large for you, is too small for my owners to care about cheating from you.”

“That is not what worries me,” Mei Ling said, though she snatched up the pellet. While her voice was husky with fear, holding Xiao-En squirming against her chest, she wore a cold, pragmatic expression. “Your masters may find it inconvenient to leave witnesses. If you get the stone-how much better if no one else knows? After… Xiang Bin departs with you… I may not live out the hour.”

I hadn’t thought of that, Bin realized, grimly. His jaw clenched. He took a step toward the table.

“Open your tutor-tablet,” the bird-thing snapped, no longer courteous. “Quickly! And speak your names aloud.”

Bin hurried to activate the little Mesh device, made for preschoolers, but the only access unit they could afford. Their link was at the minimal, FreePublic level-still, when he spoke the words, a new posting erupted from the little screen. It showed his face… and Mei Ling’s… and the worldstone… plus a few dozen characters outlining an agreement.

“Now, your wife knows no more than is already published-which is little enough. Our rivals can extract nothing else, so we have no reason to silence her. Nor will anyone else. Does that reassure?” When they nodded, the machine hurried on.

“Good. Only, by providing this reassurance, I have made our time predicament worse. Over the course of the next few minutes and hours, many new forces will notice and start to converge. So choose, Peng Xiang Bin. This instant! If you will not bring the stone, I will explode in twenty seconds, to prevent others from getting it. Agree, or flee! Sixteen… fifteen… fourteen…”

“I’ll go!”

Bin grabbed up a heavy sack and rolled the gleaming ovoid inside. The worldstone brightened, briefly, at his touch, then seemed to give up and go dark, as he stuffed in some padding and slung the bag over a shoulder. The penguinoid was already at the flap of the little tent-shelter. Bin turned…

… as Mei Ling held up their son-the one thing they both cared about, more than each other. “Thrive,” he said, with his hand upon the boy’s head.

“Survive, husband,” she commanded in turn. A moist glisten in her eye both surprised and warmed him, more than any words. Bin accepted the obligation with a hurried bow, then ducked under the flap, following the robot into the setting sun.

Halfway down the grand staircase, on the landing that Bin had turned into an indoor dock, the penguin split its belly open, revealing a small cavity and a slim, metal object within.

“Take it.”

He recognized a miniature breathing device-a mouthpiece with a tiny, insulated capsule of highly compressed air. It even had a pair of dangling gel-eyepieces. Quang Lu, the smuggler, possessed a bulkier model. Bin snatched it out of the fissure, which closed quickly, as the robot waddled to the edge, overlooking the greasy water of the Huangpu Estuary.

“Now, make speed!”

It dived in, then paused to swivel and regard Bin with beady, now luminescent eyes, watching the human’s every move.

Peng Xiang Bin took a brief, backward glance, wondering if he would ever return. He slipped in the mouthpiece and pushed the gels over his eyes. Then took the biggest plunge of his life.

If and when our civilization expires, we may not even agree on the cause of death. Autopsies of empires are often inconclusive. Consider Alexander Demandt, a German historian who in the 1980s collected 210 different theories for the fall of the Roman Empire, including attacks by nomads, food poisoning, decline of Aenean character, loss of gold, vanity, mercantilism, a steepening class divide, ecological degradation, and even the notion that civilizations just get tired after a while.

Some were opposites, like too much Christian piety versus too little. Or too much tolerance of internal deviance versus the lack of it. Other reasons may have added together, piling like fatal straws on a camel’s back.

Now it’s your turn! Unlike those elitist compilers, over at the Pandora Foundation, our open-source doomsday system invites you, the public, to participate in evaluating how it’s all going to end.

Using World Model 2040 as a shared starting condition, we’ve seed-slotted a thousand general doom scenarios. Groups are already forming to team-reify them. So join one, bringing your biases and special skills. Or else, start your own doomsday story, no matter how crackpot! Is Earth running out of phlogiston? Will mole people rise out of the ground, bent on revenge? Later, we’ll let quantum comparators rank every story according to probabilities.

But for now, it’s time for old-fashioned, unmatched human imagination. So have fun! Make your best case. Convince us all that your chosen Failure Mode is the one that will bring us all down!

– from SlateZine’s “Choose Your Own Apocalypse” joshsimgame, August 2046

That first day passed, and then a tense night that he spent clutching a sleeping dolphin by moonlight, while clouds of phosphorescent plankton drifted by.

I hear that cetaceans sleep with just half their brains at a time. Jeez, how useful would that be?

Fortunately, the same selective-permeability technology that enabled his helmet to draw oxygen from the sea also provided a trickle of freshwater, filling a small reservoir near his cheek. I’ve got to buy stock in this company, he thought, making a checklist for when he was picked up tomorrow.

Only pickup did not happen-no helicopters or rescue zeps, no speedy trimarans bearing the Darktide Services logo, or even a fishing boat. The next morning and afternoon passed pretty much the same as the first, without catching sight of land. The world always felt so crowded, he thought. Now it seemed endless and unexplored.

Funny. I would have expected Lacey to fill the sky with searchers, by now. And not just his mother. Despite a reputation as a thrill-seeking playboy, Hacker had some genuine friends, a brother who would join the search, and some loyal staff. Every bit of electronics in this suit must be fried. And I must have come down way, way off course.

The long day that followed seemed to pass quite slowly in the company of his new friends, who alternately carried and guided him in some unknown direction.

The helmet came stocked with one small protein stick. When that was gone, Hacker added hunger to his list of complaints. But at least he wouldn’t die of thirst. As fast as his suit could filter freshwater from the surrounding sea, Hacker guzzled it down, flushing out his system and occasionally releasing fertilizer for drifting plankton to feed upon.

Gradually, his thoughts began to clear.

Was I really about to head back into the reef? I must have been delirious. Maybe had a concussion. These flipper guys saved me from myself, I guess.