>>23832
>I mean, I feel like it was a highly specific out of context thing
It wasn't - at least from my understanding. The way Jaser describes the Perimeter cycle, it's as though it was a record that was always playing and had never started or stopped at any point. Nothing within the record can halt the playing of the record and nothing can change the fact that the record has never stopped or started. Only something external to the record, /outside/ it entirely, can actually affect it and thusly break the cycle. This could take any form so long as it is something "outside the record" - said thing wouldn't even need to be anything but mundane from the perspective of wherever it's from, it just needs to be from beyond the 'record' and thusly "impossible".
>like those in Homestuck and Evertale are also instances of the God of Fear when those settings have nothing to do with the Esoterroristverse.
If you brought things from Homestuck or Evertale TO the Perimeter and Ordem, then they'd definitionally be an "impossible intervention". Also, the nature of the 4th wall breaks in both Homestuck and Evertale are still things within the in-setting narrative - things like Hussie himself or the stuff involving the MC in Evertale are all things acknowledged and interacted with by the story's narrative. Hussie himself is even killed by Lord English because narrative is a thing directly tangible and interactable for the cast in HS. The nature of Fear means this isn't applicable in the same way - the Marks and the God of Fear aren't things in the setting at all, yet can manipulate or influence things there.
>Or for that matter, to assume Fear is THAT much more all-encompassing than the other concepts when the fact that some guy can assemble a ritual to wipe them out with applied mundanity
Well, that's not what Kian was doing; for starters, he needed the Deconjuration in order to gain the ability to cast his rituals, then he needed to acquire a Mark (an entity of Fear, aka a Player - in Kian's case, this would be the GM) by acquiring the body of a Marked, then he had to kill everyone who knew of or was exposed to the Paranormal, then he'd need to restrain and destroy the Relics by using the Relics to cause a "war of the Entities on the Other Side", then finally he'd somehow sever the link of the Elements and Other Side to Reslity to permanently destroy the Paranormal. Not only would this all be facilitated via a Mark and using Paranormal rituals/the Relics themselves, but it could also only happen because Kian himself is a Parsnormal entity created specifically by Knowledge to cause the Calamity; everything he ever did was done with the tacit backing of Knowledge.
And Fear is that much more encompassing - the Other Side is encompassed and generated by it - implicitly including the other Elements, Reality is speculated to have been created by it wholesale, Kian got regularly fucked over by things relating to the influence of Fear, outright required the nature of a Marked to achieve his plans and /explicitly/ was not aware of Verity's role in the Prophecy of the Unhaunted One despite knowing literally everything about the Other Side and when he found out, he couldn't even harm Verity because the latter's role in that prophecy would not allow it - likewise he was similarly unaware of the Diary Of God and got his rituals deleted entirely by it (literally; what happened when the Diary was used is that the actual player of the character who used it, Bagi, was given access to Kian's character sheet and was allowed to remove any one thing of her choice from it, and she chose his rituals), the other Elements explicitly /need/ Fear in order to cross the Membrane to begin with, Fear can violate/change/redefine all the rules the others operate on at a whim, etc. It has always been beyond them.
>And if we’re defining impossibilities as things that are neither there nor here, than by definition impossibilities can only be distinguished by phenomena detected in either.
It's not about "phenomena present in either", that's my point. If it was, then the Perimeter never could have been resolved. An "impossible intervention" is explicitly anything that is "impossible"; which is something entirely out of context, like someone going to the game's steam store page and pulling info from that to resolve a puzzle (an actual canon puzzle for Samuel's ARG) or fucking with the lighting settings on your computer to revolve a pattern for something Mia can't solve on her own, or replicating a specific pattern done by Jaser in a previous playable sequence that you can only notice and repeat because you are the player controlling them in order to free Verity at a later interval since he'd otherwise be unable to get out on his own, or how
the literal opening of the game is You, the Player, doing the Immersion Ritual - which basically implies that the entire game is a result of (You) directly taking control of the characters through treating the game like an in-progress memory, which isn't how the Immersion Ritual even works by the way.
I'm not saying that an "impossible intervention" even necessarily encompasses everything in fiction in the sense that "all these fictional worlds are subject to X's rules despite having no crossover at all". What I'm saying that in the context of bringing in out-of-context things or doing things nothing in the setting can replicate in any way, that /is/ what an "impossible intervention" is. It wouldn't apply if you left EOF/OP because that's beyond the purview of this discussion, but in the context of OP's metalanguage, that's exactly what they are.
>Esoterroristverse
That's a funny term, since Esoterrorists and Ordem have nothing in common beyond surface details. If this were a conversation about the Mystery Men instead, it would be less of an issue in fact - since there'd be nothing to philosophize or quibble about. You could punch them out at leisure as far as we're aware. Ordem's mechanics are specific to Ordem.