The Senior Common Room was enjoying a quiet afternoon.
Professor Quillibrace was reading.
Miss Stray was making notes.
Mr Blottisham was reading an interview with great enthusiasm.
Every few moments he emitted a small noise of approval.
Eventually Quillibrace looked up.
"Good news?"
"Excellent news."
"How reassuring."
Blottisham lowered the magazine.
"A distinguished AI researcher has settled the matter."
"Oh dear."
"What?"
"Nothing. Please continue."
Blottisham adjusted his spectacles.
"He says that machine consciousness is inevitable."
"I see."
"He is one of the world's leading experts."
"On what?"
"Artificial intelligence."
Quillibrace nodded.
"And therefore?"
"And therefore he knows what he is talking about."
The room became quiet.
Miss Stray slowly placed down her pen.
Quillibrace closed his book.
"What now?" said Blottisham.
"I fear we have arrived at a crossroads."
"A crossroads?"
"One road leads to expertise."
"And the other?"
"Authority."
Blottisham frowned.
"I do not see the distinction."
"That is what worries me."
Miss Stray smiled.
"It is a surprisingly common difficulty."
Blottisham looked annoyed.
"Very well. Explain."
Quillibrace folded his hands.
"Suppose I consult a surgeon."
"A sensible choice."
"The surgeon informs me that my appendix requires removal."
"Good."
"I trust the surgeon."
"Naturally."
"Now suppose the surgeon begins explaining the ultimate purpose of human existence."
Blottisham hesitated.
"That seems a different matter."
"Why?"
"Because surgery is not philosophy."
"Excellent."
"There it is again."
Quillibrace ignored him.
"So we agree that expertise in one domain does not automatically confer expertise in another."
"Obviously."
"Good."
Blottisham relaxed.
The relaxation proved premature.
Quillibrace continued.
"Now let us consider the AI researcher."
"What about him?"
"He understands machine learning systems."
"Extremely well."
"I have no doubt."
"And?"
"Does that expertise automatically extend to consciousness?"
Blottisham opened his mouth.
Paused.
Closed it again.
"Perhaps."
"Why?"
"Because the machines are involved."
Miss Stray laughed softly.
"The machines are indeed involved."
Blottisham looked relieved.
"Thank you."
"Unfortunately," she continued, "so is consciousness."
His relief disappeared.
Quillibrace rose and wandered toward the fireplace.
"Imagine a brilliant engineer who designs telescopes."
"Yes?"
"Would that make the engineer an authority on the meaning of the universe?"
"No."
"A brilliant geneticist?"
"No."
"A brilliant physicist?"
Blottisham hesitated.
"No."
"Then why a brilliant AI researcher?"
Blottisham looked troubled.
"Because they are studying minds."
"Are they?"
The question hung in the air.
"Well..."
Blottisham shifted slightly.
"Are they not?"
Quillibrace considered.
"They are certainly studying systems that perform tasks humans associate with minds."
"That sounds suspiciously similar."
"It sounds similar because language is doing some heavy lifting."
Miss Stray nodded.
"I think we may have quietly moved from intelligence to consciousness."
"Have we?"
"Several times."
Blottisham groaned.
"This subject is exhausting."
Quillibrace smiled sympathetically.
"It does have that effect."
Miss Stray leaned forward.
"I wonder whether there is another reason experts acquire this authority."
"What reason?"
"People dislike uncertainty."
Blottisham nodded.
"A perfectly reasonable dislike."
"Quite."
She looked out the window for a moment.
"Consciousness is one of the least settled questions we possess."
"Agreed."
"Artificial intelligence is one of the most rapidly changing technologies we possess."
"Also agreed."
"Combining the two produces an extraordinary amount of uncertainty."
Blottisham frowned.
"That sounds unfortunate."
"It is."
"So what do people do?"
Quillibrace answered.
"They look for someone who appears to know."
The room was quiet.
Blottisham thought about this.
"That seems sensible."
"It often is."
"And yet?"
"And yet the desire for certainty can subtly transform expertise into prophecy."
Blottisham looked puzzled.
"Prophecy?"
"Observe the language."
Quillibrace picked up the magazine.
"'Machine consciousness is inevitable.'"
He handed it back.
"That is not a statement about present systems."
"No."
"It is not even a statement about current evidence."
"I suppose not."
"It is a statement about the future."
Blottisham nodded.
"Yes."
"A future that does not yet exist."
"Correct."
"And whose defining concept remains poorly understood."
Blottisham stared at him.
"That sounds less decisive when you say it like that."
"Most prophecies do."
Miss Stray laughed.
For a moment even Quillibrace appeared amused.
Blottisham looked down at the interview.
"I still think the researcher is probably right."
"Perhaps."
"You do?"
"Certainly."
Blottisham blinked.
"Then what have we spent the last hour discussing?"
"The source of the authority."
"Oh."
Quillibrace returned to his chair.
"The researcher may be correct."
"He may?"
"Entirely."
"Then where is the problem?"
"The problem arises when correctness is inferred from expertise rather than from argument."
Miss Stray nodded.
"Or when disagreement becomes impossible because the speaker has acquired prophetic status."
The room fell silent again.
Blottisham examined the magazine.
The interview had not changed.
The predictions remained exactly where they had been before.
After a time he said:
"I think I see the difficulty."
"Good."
"The expert understands the machine."
"Very likely."
"But the question is whether that automatically means he understands the mystery."
Quillibrace smiled faintly.
"A distinction worth preserving."
Blottisham looked suspicious.
"You are pleased."
"A little."
"I dislike it when that happens."
"Understandable."
Outside, the college clock struck the hour.
Inside, the magazine remained open on the table.
Its predictions still pointed confidently toward the future.
What seemed rather less certain was how much of that confidence came from evidence, and how much from the ancient human desire to find a prophet whenever a mystery becomes sufficiently important.