Nope. The section for abilities and how to use abilities checks specifically says that bother PCs and Monsters used ability checks to complete tasks.
Oh, yes. When I said it was explicitly player -> monster I was referring to the sections on social manipulation, not general skill usage.
Anyway, I was about to write that I think a lot of this comes down to how much weight one puts on the passage from page 174. Which is supported by this:
We'd have to alter this text to exclude certain tasks from Monsters or the use of certain ability checks in use of those tasks. We also have to carve out an exception for any such ability used according to the rules in a contest with a PC, such as the Insight vs Deception one mentioned.
I don't think you do have to keep repeating exceptions, if you believe the exceptions are inviolate. Charm and sleep spells don't bother saying, "...unless the target has immunity." Weapon attacks don't carry the proviso, "...unless the target has immunity to slashing" or "or half that much, if the target has resistance to slashing".
Likewise, I don't think it's necessary to keep putting in parentheticals that players make their own decisions. The opposite, in fact: when an ability
can override the rule, it is described as an exception to the general rule. Which is what I see in the rules.
But, again, that's only true if you give a lot of weight to page 174. I do, but only because I already have that belief. You don't, so...yeah, your interpretation also makes sense.
And, finally, we have to create a distinction between knowledge and thinking for knowledge skills to function. I mean, I covered all of this already, multiple times, do I need to repeat it every time? All of these things have to be touched to allow for the Roleplaying Rule.
I think there's a pretty clear distinction between belief and knowledge, as
@Charlaquin laid out above. If you have some reason why that's insufficient, I'm not following it. Is it possible you are arguing that there is no difference between day and night, with the proof being dawn and dusk? If so, it might be interesting to find hypothetical play examples that sit right on that boundary. So far, I've yet to hear an example where I find the distinction unclear.
As some other posters have pointed out, NONE OF THIS MATTERS. You claim to not be invoking rule zero, but I will: people can play however they want, so this is not an important argument. It's just interesting. But you seem to be getting snippy and offended, as if people are trolling you or doubting your sincerity. I don't think that's the case.