The Senior Common Room was unusually quiet.
Professor Quillibrace was reading a book. Miss Stray was looking through the morning's correspondence. Mr Blottisham had just arrived, carrying a newspaper and an expression of considerable satisfaction.
"I have discovered," he announced, "that physicists are now questioning whether reality exists."
Quillibrace lowered his book.
"How industrious of them."
"I refer to Carlo Rovelli. He has apparently decided that there is no ultimate reality."
"Has he?"
"Indeed. And I must say, I find the whole business rather alarming. If physicists cannot tell us what reality is, what precisely are they doing?"
"Physics," said Quillibrace.
Blottisham looked dissatisfied.
"I was hoping for something more substantial."
Miss Stray smiled.
"What does Rovelli mean by ultimate reality?"
"That," said Blottisham, "is precisely what he ought to have explained before abandoning it."
Quillibrace returned to his book.
"Perhaps he has abandoned the question rather than the explanation."
"That is hardly an improvement."
Miss Stray put down her correspondence.
"I think he is questioning whether the most general description of something necessarily tells us the most about it."
"Then he is questioning the foundations of science."
"Not necessarily," said Quillibrace. "He is questioning the assumption that the foundations must provide an explanation of everything."
Blottisham sat down.
"I should have thought that was the entire point of foundations."
"That depends on what one expects them to support."
There was a brief silence.
Blottisham unfolded his newspaper.
"Let us take something simple. A chair."
"An admirable beginning," said Quillibrace.
"A chair exists. It has a shape, a weight, a position. These are properties of the chair. Other things may be related to it, but the chair remains a chair."
"Does it?"
Blottisham looked up.
"Of course it does."
Miss Stray glanced towards the window.
"What makes it a chair?"
Blottisham stared at her.
"I beg your pardon?"
"What makes that particular object a chair rather than a piece of timber?"
"Its construction."
"And what makes it something one can sit on?"
"I should have thought that self-evident."
Quillibrace closed his book.
"Perhaps the chair has been designed for sitting, but that does not mean that its existence as a chair is independent of the relationships through which it acquires that function."
Blottisham looked at the chair beside him.
"I am not sure I like where this is going."
Miss Stray continued.
"Suppose nobody ever sat on it. Suppose it were placed in a room where nobody recognised its purpose. Would it still be a chair?"
"Certainly."
"And if it were broken apart and used to build a table?"
"Then it would no longer be a chair."
"Why not?"
"Because it would be a table."
Quillibrace looked at Miss Stray.
"An interesting distinction."
Blottisham frowned.
"I fail to see what is interesting about it."
"Perhaps," said Miss Stray, "the object has not become something else merely because its material has changed. Its relationships have changed, and with them the possibilities of what it can do."
Blottisham examined the chair again.
"I am beginning to suspect that this is a very complicated chair."
"Only if one insists on understanding it independently of everything else."
Quillibrace reached for his tea.
"That is generally how complications begin."
Miss Stray turned towards the window.
"Consider the Moon."
Blottisham sighed.
"I knew it would come to astronomy."
"The Moon has one velocity relative to Earth and another relative to the Sun. Which velocity belongs to the Moon?"
"Both, presumably."
"Then its velocity is not something it possesses independently of its relationships."
Blottisham looked towards Quillibrace.
"Are you suggesting that the Moon does not exist?"
"Not at all."
"Then what are you suggesting?"
"That the Moon exists, but some of the properties through which we describe it are relational."
Blottisham seemed relieved.
"Well, that is perfectly straightforward."
"Is it?"
Quillibrace took a sip of tea.
"The difficulty is that we tend to extend the assumption of independence from the things themselves to the properties through which we understand them."
Miss Stray nodded.
"And perhaps to the things they become."
Blottisham looked from one to the other.
"I should like to know what that means."
"Consider a living organism," said Miss Stray. "It exists through relationships with its environment. Its continued existence depends on processes involving things outside itself."
"Naturally."
"But those relationships do not merely sustain an organism that is already complete. They participate in what it becomes."
Blottisham looked thoughtful.
"Are you saying that an organism is not an organism until it has an environment?"
"An organism without an environment would be a rather difficult thing to imagine."
"That is not an answer."
"No," said Quillibrace. "But it may be a useful difficulty."
Miss Stray continued.
"The organism changes its environment through its activities. Its environment changes the conditions under which the organism subsequently exists. Neither remains entirely independent of the relationship."
Blottisham leaned back.
"I see. You are proposing that everything is connected."
Quillibrace looked up.
"That is a remarkably unhelpful way of putting it."
"Why?"
"Because the question is not whether things are connected. It is what particular relationships make possible."
Miss Stray smiled.
"Some relationships are incidental. Others participate in the existence of what they relate."
Blottisham considered this.
"Then a relationship can be more important than the things involved?"
"Not necessarily more important," said Quillibrace. "But indispensable to understanding them."
Blottisham looked pleased.
"Then we agree that things exist."
"Of course."
"And that relationships exist."
"Certainly."
"Then I fail to see what has changed."
Miss Stray glanced at the chair.
"Perhaps what has changed is where we begin."
Blottisham looked puzzled.
"Where we begin?"
"Instead of asking what a thing is independently of its relationships, we ask how those relationships participate in making it what it is."
Quillibrace opened his book again.
"That is a rather different question."
Blottisham looked towards the window.
"I should have thought that a thing was a thing."
Miss Stray followed his gaze.
"Perhaps it is."
He turned back.
"Then what is the problem?"
Quillibrace looked at him over the top of his book.
"The problem, Mr Blottisham, is that you have been assuming that the answer to that question tells you everything worth knowing."
Blottisham sat in silence.
Then he looked down at the chair.
"I wonder," he said, "whether the university is a thing."
Miss Stray smiled.
Quillibrace lowered his book.
"Now that," he said, "is an entirely different matter."
Blottisham looked delighted.
"I shall investigate immediately."
Miss Stray returned to her correspondence.
Quillibrace resumed his reading.
And the university, meanwhile, continued to exist.