You keep using the word "we perceive". Who is this "we"? The characters don't perceive anything.
Well obviously, the characters are a fictional construct, we get that. But if you're not willing to accept the conceit of a character avatar, what's the point of roleplaying at all?
And the players don't "perceive" anything except the results of the die rolls.
I cannot disagree more strongly with this statement. They perceive the results of the die rolls,
but within the context of understanding the nature of the resolution mechanic, and how that mechanic exists within an agreed upon, pre-existing model of rationality.
Players perceive that a particular die roll
associates to a particular mechanic, that
associates to some inference about the in-game effect, which
associates to some model, simulation, mileu that allows the effect to happen.
If the GM has to pre-set every condition of "reality" for every single game, it would be pointless. Every RPG is based in some way on the pre-existent knowable, observable facts about the way our universe works--the only question is which rules force deviation from those observed "norms," and how the player's "perception" and expected results of "rolling the die" is based on them.
Dissociative mechanics are problematic not because they can't ultimately be "explained" in context, but because every single explanation is necessarily "reconstructing" the reality of the game when it happens.
And for a number of reasons, this is hardly an ideal situation while playing the game. The Alexandrian is fairly clear about this phenomenon--if you do this, and then apply that "reconstruction" from there on out, you've essentially created a house rule. The reason for creating a consistent "reconstruction" at all is so players can later act and react to the inferences and assumptions such a reconstruction will present in future instances.
The only perceptions are what the players envision in their minds' eyes occurring in the fictional game world. The perception is the result of associating the mechanics to a narrative; it is not the cause.
The game world's reality is whatever the DM and players accept it to be.
Yes--but the players have to also accept that the fiction
exists, and that it follows basic rules that exist outside of "invoking narrative."
Narrative doesn't exist in a vacuum. Dissociative mechanics are dissociative because they inherently disrupt the concept of, "I accept this world's internal 'rules'."
It's pretty clear we inherently disagree on this point, though, so I don't know how much more useful discussion will be.