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“I’m sorry we have to do this again,” she said. “Anyahera will forgive you.”

“Twice in a row? She thought Jotunheim was the greatest atrocity in human history. ‘A crime beyond forgiveness or repair,’ remember? And I let it stand. I walked away.”

I took Thienne’s shoulder, gripped the swell of her deltoid, the strength that had caught Anyahera’s eye two decades ago. Two decades for us—on Earth, centuries now.

Thienne stroked my cheek. “You only had two options. Walk away, or burn it all. You knew you weren’t qualified to judge an entire world.”

“But that’s why we’re here. To judge. To find out whether the price of survival ever became too high—whether what survived wasn’t human.”

She leaned in and kissed me softly. “Mankind changes,” she said. “This—what you are—” Her hands touched my face, my chest. “People used to think this was wrong. There were men and women, and nothing else, nothing more or different.”

I caught her wrists. “That’s not the same, Thienne.”

“I’m just saying: technology changes things. We change ourselves. If everyone had judged what you are as harshly as Anyahera judged Jotunheim—”

I tightened my grip. She took a breath, perhaps reading my anger as play, and that made it worse. “Jotunheim’s people are slaves,” I said. “I can be what I want. It’s not the same at all.”

“No. Of course not.” She lowered her eyes. “You’re right. That was an awful example. I’m sorry.”

“Why would you say that?” I pressed. Thienne closed herself, keeping her pains and fears within. Sometimes it took a knife to get them out. “Technology doesn’t always enable the right things. If some people had their way I would be impossible. They would have found everything but man and woman and wiped it out.”

She looked past me, to the window and the virtual starscape beyond. “We’ve come so far out,” she said. I felt her shoulders tense, bracing an invisible weight. “And there’s nothing out here. Nobody to meet us except our own seedship children. We thought we’d find someone else—at least some machine or memorial, some sign of other life. But after all this time the galaxy is still a desert. If we screw up, if we die out… what if there’s no one else to try?

“If whatever happened on Mitanni is what it takes to survive in the long run, isn’t that better than a dead cosmos?”

I didn’t know what to say to that. It made me feel suddenly and terribly alone. The way Anyahera might have felt, when we voted against her.

I kissed her. She took the distraction, answered it, turned us both away from the window and down onto the couch. “Tell me what to be,” I said, wanting to offer her something, to make a part of the Universe warm for her. This was my choice: to choose.

“Just you—” she began.

But I silenced her. “Tell me. I want to.”

“A woman,” she said, when she had breath. “A woman this time, please…”

Afterward, she spoke into the silence and the warmth, her voice absent, wondering: “They trusted the three of us to last. They thought we were the best crew for the job.” She made absent knots with my hair. “Does that ever make you wonder?”

“The two-body problem has been completely solved,” I said. “But for n=3, solutions exist for special cases.”

She laughed and pulled me closer. “You’ve got to go talk to Anyahera,” she said. “She never stays mad at me. But you…”

She trailed off, into contentment, or back into contemplation of distant, massive things.

Duong-Watts malignant, I thought to myself. I couldn’t help it: my mind went back to the world ahead of us, closing at relativistic speeds.

Mitanni’s explosive growth matched the theory of a Duong-Watts malignant. But that was just correlation. The malignancy went deeper than social trends, down to the individual, into the mechanisms of the mind.

And that was Anyahera’s domain.

“We can’t destroy them,” Thienne murmured. “We might need them.”

Even in simulation we had to sleep. Lachesis’s topological braid computer could run the human being in full-body cellular resolution, clock us up to two subjective days a minute in an emergency, pause us for centuries—but not obviate the need for rest.

It didn’t take more than an overclocked instant. But it was enough for me to dream.

Or maybe it wasn’t my dream—just Duong Phireak’s nightmare reappropriated. I’d seen him lecture at Lagos, an instance of his self transmitted over for the night. But this time he spoke in Anyahera’s voice as she walked before me, down a blood-spattered street beneath a sky filled with alien stars.

“Cognition enables an arsenal of survival strategies inaccessible to simple evolutionary selection,” she said, the words of Duong Phireak. “Foresight, planning, abstract reasoning, technological development—we can confidently say that these strategies are strictly superior, on a computational level, at maximizing individual fitness. Cognition enables the cognitive to pursue global, rather than local, goals. A population of flatworms can’t cooperate to build a rocket unless the ‘build a rocket’ allele promotes individual fitness in each generation—an unlikely outcome, given the state of flatworm engineering.”

Memory of laughter, compressed by the bandwidth of the hippocampus. I reached out for Anyahera, and she looked up and only then, following her gaze, did I recognize the sky, the aurora of Jotunheim.

“But with cognition came consciousness—an exaptative accident, the byproduct of circuits in the brain that powered social reasoning, sensory integration, simulation theaters, and a host of other global functions. So much of our civilization derived in turn from consciousness, from the ability not just to enjoy an experience but to know that we enjoy it. Consciousness fostered a suite of behaviors without clear adaptive function, but with subjective, experiential value.”

I touched Anyahera’s shoulder. She turned toward me. On the slope of her bald brow glittered the circuitry of a Jotunheim slave shunt, bridging her pleasure centers into her social program.

Of course she was smiling.

“Consciousness is expensive,” she said. “This is a problem for totalitarian states. A human being with interest in leisure, art, agency—a human being who is aware of her own self-interest—cannot be worked to maximum potential. I speak of more than simple slave labor. I am sure that many of your professors wish you could devote yourselves more completely to your studies.”

Overhead, the aurora laughed in the voices of Lagos undergraduates, and when I looked up, the sky split open along a dozen fiery fractures, relativistic warheads moving in ludicrous slow-motion, burning their skins away as they made their last descent. Lachesis’s judgment. The end I’d withheld.

“Consciousness creates inefficient behavior,” Anyahera said, her smile broad, her golden-brown skin aflame with the light of the falling apocalypse. “A techno-tyranny might take the crude step of creating slave castes who derive conscious pleasure from their functions, but this system is fundamentally inadequate, unstable. The slave still expends caloric and behavioral resources on being conscious; the slave seeks to maximize its own pleasure, not its social utility. A clever state will go one step further and eliminate the cause of these inefficiencies at the root. They will sever thought from awareness.

“This is what I call the Duong-Watts malignancy. The most efficient, survivable form of human civilization is a civilization of philosophical zombies. A nation of the unconscious, those who think without knowing they exist, who work with the brilliance of our finest without ever needing to ask why. Their cognitive abilities are unimpaired—enhanced, if anything—without constant interference. I see your skepticism; I ask you to consider the ano-sognosia literature, the disturbing information we have assembled on the architecture of the sociopathic mind, the vast body of evidence behind the deflationary position on the Hard Problem.