iserith
Magic Wordsmith
This makes me curious. How do you handle deception vs insight? If an NPC is lying to the characters, do you check anything? Does the NPC role his deception, and if higher than anyone's passive insight, do you just not add anything to the description? If he rolls lower, do you add description that might indicate he's lying or do you tell them they think he's lying? You've said you never roll until there's uncertainty, but this seems a social interact case where there's uncertainty that can't be resolved by letting the players make up their own minds. So, what do you do?
And, if you do do something, why should intimidate or diplomacy be much different?
I think I've already addressed this upthread, possibly even with my very first post. But I'll answer it again:
I describe what the NPC says. If the players seek to discern the NPC's true intentions, they state an approach to achieving that goal. I judge that approach relative to the goal and decide on success, failure, or uncertainty. In the case of uncertainty, I ask for an ability check to be made, probably Wisdom (Insight). The DC is either a static DC of my choosing, an opposed roll from the NPC, or the passive Deception score of the NPC. Success means the character's approach to determining the NPC's true intentions succeeds. Failure means the approach did not succeed.
As you should be able to see, I'm simply adjudicating the action of the character (discerning the true intentions of the NPC by some viable means such as studying body language and mannerisms) as described by the player. I'm not saying the character is deceived, even on a failed check.