Ted Chiang - Arrival

I immediately tune out all sensory input, directing it to an insulated buffer of short-term memory. Then I conceive a simulator of my own consciousness to receive the input and absorb it at reduced speed. As a metaprogrammer I will monitor the equations of the simulation indirectly. Only after the sensory information has been confirmed as safe will I actually receive it. If the simulator is destroyed, my consciousness should be isolated, and I’ll retrace the individual steps leading to the crash and derive guidelines for reprogramming my psyche.

I get everything in place by the time Reynolds has finished saying my name; his next sentence could be the destruct command. I’m now receiving my sensory input with a one-hundred-and-twenty-millisecond time lag. I reexamine my analysis of the human mind, explicitly searching for evidence to verify his assertion.

Meanwhile I give my response lightly, casually.

My search produces something. I curse myself: there’s a very subtle back door to a psyche’s design, which I lacked the necessary mind-set to notice. Whereas my weapon was one born of introspection, his is something only a manipulator could originate.

Reynolds knows that I’ve built my defenses; is his trigger command designed to circumvent them? I continue deriving the nature of the trigger command’s actions.

He’s confident that additional time won’t allow me to construct a defense.

So smug. Can he actually toy with me so easily?

I arrive at a theoretical description of a trigger’s effects on normals. A single command can reduce any subcritical mind to a tabula rasa, but an undetermined degree of customization is needed for enhanced minds. The erasure has distinctive symptoms, which my simulator can alert me to, but those are symptoms of a process calculable by me. By definition the destruct command is that specific equation beyond my ability to imagine; would my metaprogrammer collapse while diagnosing the simulator’s condition?

I begin calculating what’s needed to generate a customized destruct command.

It becomes obvious that the generation is a colossal task. Generating a trigger requires intimate knowledge of my mind; I extrapolate what he could have learned about me. It appears to be insufficient, given my reprogramming, but he may have techniques of observation unknown to me. I’m acutely aware of the advantage he’s gained by studying the outside world.

His regret is evident. His plan can’t be implemented without more deaths: those of normal humans, by strategic necessity, and those of a few enhanced assistants of his, whose temptation by greater heights would interfere. After using the command, Reynolds may reprogram them – or me – as savants, having focused intentions and restricted self-metaprogrammers. Such deaths are a necessary cost of his plan.

Merely a savior.

Normals might think him a tyrant, because they mistake him for one of them, and they’ve never trusted their own judgment. They can’t fathom that Reynolds is equal to the task. His judgment is optimal in questions of their affairs, and their notions of greed and ambition do not apply to an enhanced mind.

In a histrionic gesture, Reynolds raises his hand, forefinger extended, as if to make a point. I don’t have sufficient information to generate his destruct command, so for the moment I can only attend to defense. If I can survive his attack, I may have time to launch another one of my own.

With his finger upraised, he says, ‘Understand.’

At first I don’t. And then, horrifyingly, I do.

He didn’t design the command to be spoken; it’s not a sensory trigger at all. It’s a memory trigger: the command is made out of a string of perceptions, individually harmless, that he planted in my brain like time bombs. The mental structures that were formed as a result of those memories are now resolving into a pattern, forming a gestalt that defines my dissolution. I’m intuiting the Word myself.

Immediately my mind is working faster than ever before. Against my will, a lethal realization is suggesting itself to me. I’m trying to halt the associations, but these memories can’t be suppressed. The process occurs inexorably, as a consequence of my awareness, and like a man falling from a height, I’m forced to watch.

Milliseconds pass. My death passes before my eyes.

An image of the grocery store when Reynolds passed by. The psychedelic shirt the boy was wearing; Reynolds had programmed the display to implant a suggestion within me, ensuring that my ‘randomly’ reprogrammed psyche remained receptive. Even then.

No time. All I can do is metaprogram myself over randomly, at a furious pace. An act of desperation, possibly crippling.

The strange modulated sounds that I heard when I first entered Reynolds’ apartment. I absorbed the fatal insights before I had any defenses raised.

I tear apart my psyche, but still the conclusion grows clearer, the resolution sharper.

Myself, constructing the simulator. Designing those defense structures gave me the perspective needed to recognize the gestalt.

I concede his greater ingenuity. It bodes well for his endeavor. Pragmatism avails a savior far more than aestheticism.

I wonder what he intends to do after he’s saved the world.

I comprehend the Word, and the means by which it operates, and so I dissolve.

Dividing a number by zero doesn’t produce an infinitely large number as an answer. The reason is that division is defined as the inverse of multiplication: if you divide by zero, and then multiply by zero, you should regain the number you started with. However, multiplying infinity by zero produces only zero, not any other number. There is nothing which can be multiplied by zero to produce a nonzero result; therefore, the result of a division by zero is literally ‘undefined.’

Renee was looking out the window when Mrs. Rivas approached.

‘Leaving after only a week? Hardly a real stay at all. Lord knows I won’t be leaving for a long time.’

Renee forced a polite smile. ‘I’m sure it won’t be long for you.’ Mrs. Rivas was the manipulator in the ward; everyone knew that her attempts were merely gestures, but the aides wearily paid attention to her lest she succeed accidentally.

‘Ha. They wish I’d leave. You know what kind of liability they face if you die while you’re on status?’

‘Yes, I know.’

‘That’s all they’re worried about, you can tell. Always their liability – ’

Renee tuned out and returned her attention to the window, watching a contrail extrude itself across the sky.

‘Mrs. Norwood?’ a nurse called. ‘Your husband’s here.’

Renee gave Mrs. Rivas another polite smile and left.

Carl signed his name yet another time, and finally the nurses took away the forms for processing.

He remembered when he had brought Renee in to be admitted, and thought of all the stock questions at the first interview. He had answered them all stoically.

‘Yes, she’s a professor of mathematics. You can find her in Who’s Who. ’

‘No, I’m in biology.’

And:

‘I had left behind a box of slides that I needed.’

‘No, she couldn’t have known.’

And, just as expected:

‘Yes, I have. It was about twenty years ago, when I was a grad student.’

‘No, I tried jumping.’