“propose a circumstance where two plus two can equal something other than four.”
That’s a valid point but doesn’t apply to what we were talking about.
Extending the analogy, the post I responded to said:
“Probably ( = 4 )”
And my point was:
“You can’t determine the probability of what’s on the right side of ( = ) if you don’t know what’s on - and are incapable of computing - the left side.”
Sure you can. Oh I'll grant you the equation can not be solved as such, but that's what higher math is all about: what you do know of the left side can and does conclusively constrains the range of possibilities on the right.
And that applies precisely to what we're talking about, here.