Maxperson
Morkus from Orkus
OTOH, you may not fully apreciate what the NPC represents.
Frankly, it doesn't matter what the NPC fully represents. The only part that matters is what my PC can perceive. In this case a wink. Everything else unknown to me is irrelevant unless it's magic, mind control or some other special power that could actually override what my PC is going to do.
When there are conflicting visions of, or other sources of uncertainty about, the fiction, complete/functional games provide mechanics to resolve them.
When there are conflicting vision of how a PC reacts, the player wins(unless playing a game where that doesn't happen).
D&D mostly does so for magic, and given it's history & place in the hobby, that prejudice has become pervasive.
But, it's not absolute, and some games do try to deliver more functionality.
Not more functionality. Different functionality. Whether a system is more or less function will be determined by the individual and what he wants to get out of a system. A system where the DM can override me and make my PC do something he wouldn't do is far less functional to me than a system that can't.