What It Is Like
それがどのようであるか——クオリアの復活
They met again a week later in a laboratory that smelled faintly of antiseptic and cooling metal.
Okafor had prepared a demonstration designed, she hoped, to answer Rourke's objection on its own ground.
A volunteer pressed her thumb against a warm plate, and Aura's needle rose in a smooth arc.
"There," said Okafor, "is pain, rendered at last in numbers a clinician anywhere could read and compare."
Rourke watched the needle climb and asked, mildly, whose pain the number was supposed to describe.
"You have measured a response," he said, "but not, I think, the raw feeling of the hurt itself."
"Philosophers call it , the particular what-it-is-likeness that no outside description ever seems to capture."
Okafor had heard the word before and regarded it as a fog that clearer science would burn away.
"Tell me," she said, "what your feeling of pain is, if not the firing of these very nerves."
"I cannot hand it to you," Rourke admitted, "and that inability is precisely the heart of the problem."
He offered an , the way a teacher reaches for a lamp in a darkened room.
"Imagine a scientist who knows every fact about colour yet has lived her whole life in grey."
"She knows the wavelengths, the neurons, the words; still, seeing red for the first time teaches her something new."
"That something new," he said, "is the quale, and no equation on your screen appears to contain it."
Okafor countered that the feeling of was itself just another brain state, waiting to be mapped.
"Perhaps," said Rourke, "but notice how your answer keeps translating the feeling into the very terms it resists."
The volunteer, still wired to the machine, remarked quietly that her pain had felt sharper when observed.
Both scholars turned, struck by the remark, which neither the numbers nor the theory had predicted.
Okafor made a note, telling herself it was an , a stray nerve, nothing to trouble the model.
Rourke, however, heard in it the first faint knock of a door he had long expected to open.
"Your instrument assumes the watcher stands outside the watched," he said, "but minds may not be so ."
"Measure a feeling, and you may the very feeling you are trying to hold still."
Okafor felt the familiar splinter turn, and she resolved to test the claim rather than it.
"Then let us bring in a subject," she said, "and watch what happens when watching becomes the experiment."
Rourke agreed, though a caution crossed his face like a cloud dragging its shadow over a field.
"Be careful," he said, "for some questions change the questioner more than they change the answer."
Okafor laughed, mistaking the warning for philosophy, not yet hearing the folded quietly inside it.
That night she dreamed of needles rising, and of a colour she had somehow never seen before.