Senior Common Room, slightly later. The tea has been refreshed. Blottisham is now gesturing at the air as though it might clarify itself.
Mr Blottisham: I’ve always found black holes rather rude, personally. Very bad manners. You get close, and suddenly nothing can be said about what happens next.
Professor Quillibrace: That is one interpretation of their etiquette, yes.
Mr Blottisham: And the “event horizon” is the point where things stop being visible. Simple enough: you cross it, I stop receiving reports, and therefore you’ve effectively gone missing.
Miss Elowen Stray: That’s already doing more work than it admits.
Mr Blottisham: It’s observational common sense.
Professor Quillibrace: It is observational common sense supplemented by a quietly robust metaphysics of continuity.
Mr Blottisham: I’m not sure I like the tone of that.
Miss Elowen Stray: The equations, interestingly, don’t misbehave at the horizon itself.
Mr Blottisham: Don’t they? That seems unhelpful of them.
Professor Quillibrace: Indeed. One might expect at least a small gesture of catastrophe for pedagogical clarity, but no. Everything remains locally well-formed.
Mr Blottisham: So nothing breaks?
Miss Elowen Stray: That depends on what you think “breaks” means.
Mr Blottisham: It usually means things stop working.
Professor Quillibrace: A serviceable definition, though rather local in scope.
Mr Blottisham: Local is fine. We are, after all, quite local beings.
Miss Elowen Stray: That is precisely where the difficulty begins.
Mr Blottisham: I’m beginning to suspect that statement applies to everything you say.
Professor Quillibrace: Let us proceed carefully. The standard account is familiar: beyond the horizon, information cannot escape. The interior becomes inaccessible to an external observer.
Mr Blottisham: Exactly. A polite way of saying “we lose contact.”
Miss Elowen Stray: But that description quietly assumes something stronger than loss of contact.
Mr Blottisham: Which is?
Miss Elowen Stray: That there is still a single shared world in which contact has merely become impossible.
Professor Quillibrace: Ah. The representational reflex again.
Mr Blottisham: I’m afraid I still don’t see the problem. There is a black hole. Inside it, things continue. Outside it, we cannot observe them. That seems perfectly coherent.
Professor Quillibrace: Coherent, yes. But coherence is not yet ontological neutrality.
Miss Elowen Stray: It presumes a unified stage on which both inside and outside continue to be fully co-present, even if only one side can report on the other.
Mr Blottisham: Well, isn’t that the point of reality? One stage, many actors?
Professor Quillibrace: That metaphor is doing more metaphysics than it admits.
Miss Elowen Stray: The alternative is that the horizon is not just a boundary of observation, but a partition in what can be co-actualised.
Mr Blottisham: “Co-actualised” sounds like something one should avoid doing in public.
Professor Quillibrace: In this context it simply means: brought into a single, stable regime of jointly sustained reality.
Mr Blottisham: Ah. That makes it worse.
Miss Elowen Stray: The key point is this: it is not only that I cannot see what you see. It is that the conditions under which our perspectives would remain mutually integrable begin to fail.
Mr Blottisham: So I don’t just lose sight of you—I lose… compatibility?
Professor Quillibrace: A rather apt, if inelegant, formulation.
Miss Elowen Stray: Within your local frame, everything remains perfectly coherent. Crossing the horizon need not feel like breakdown at all.
Mr Blottisham: Good. I was beginning to worry.
Miss Elowen Stray: But from outside, your world no longer participates in the same global organisation of actuality.
Mr Blottisham: That sounds like I’ve been administratively removed from reality.
Professor Quillibrace: Not removed. Partitioned.
Mr Blottisham: That is only marginally less alarming.
Miss Elowen Stray: It means the “inside” and the “outside” are no longer simply different regions of one shared world. They are diverging regimes of actualisation.
Mr Blottisham: I think I preferred them as regions.
Professor Quillibrace: Preference is rarely decisive in matters of structure.
Mr Blottisham: So the horizon is not a wall?
Miss Elowen Stray: No.
Professor Quillibrace: It is a limit of co-instantiation.
Mr Blottisham: That sounds like a very expensive concept.
Miss Elowen Stray: It’s the point at which multiple perspectives can no longer be brought into a single coherent world without residue.
Mr Blottisham: Residue being…?
Professor Quillibrace: Incompatibility of worlds, not merely gaps in information.
Mr Blottisham: So naïve realism—the idea that we’re all looking at the same world from different angles—that’s gone, is it?
Professor Quillibrace: It becomes, at best, locally sustainable.
Miss Elowen Stray: The horizon shows that “same world” is not guaranteed. It is something that has to be maintained through relations that can fail.
Mr Blottisham: I see. So the universe might not be as socially cohesive as we had hoped.
Professor Quillibrace: An elegant summary, if somewhat understated.
Miss Elowen Stray: The unsettling part is not that things become hidden.
Mr Blottisham: What is it then?
Miss Elowen Stray: That the conditions for a single shared world begin to fragment.
Professor Quillibrace: The horizon does not conceal a world.
Miss Elowen Stray: It reveals the limits of world-coincidence.
Mr Blottisham: I shall require more tea, and possibly a new ontology.
Professor Quillibrace: The tea is available. The ontology may take longer.
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