I just don't see trying to "determine the true intentions of a creature, such as when searching out a lie or predicting someone’s next move. " as having anything to do with asking questions.
The person doing the insight may or may not be the person talking for one. Second, communicating with another individual is covered under persuasion, intimidate and deception. Thinking of questions might be covered by a straight wisdom check or intelligence checks with arcana, history or religion proficiency bonuses as necessary.
In theory anyway. I've had games where it seemed to always devolved into the barbarian getting bored and hitting something. Frequently the party bard.
This gets st something I wanted to bring up earlier but had to go actually play my teleporter in FASERIP for a while.
I quote from the above thread a fewxexsmples to pose a question for you GMs - where do you draw the line between perception/insight and Investigation?
"""I want to know if he actually knows Vinnie the Snake. I'm going to casually mention some untrue things about Vinnie that would surprise somebody who actually knows him, and watch his reaction."
"I want to know if he had feelings for her. I'm going to keep bringing her back into the conversation, and watch to see what he does."
"I want to know if he has a prior relationship with the city watch. I'll keep the conversation going for a while, then suddenly announce that the city watch should be here any minute, and see his reaction." (Player2: "Ooh...I want to try to slip out, and then knock on the door loudly!")""
Me? One of my dividing lines is "are you creating clues or working with and changing evidence into clues?" Or are you just observing.
To me, a somewhat literal example of scientific method and experiment is shown in the three examples cited in quotes. A question or hypothesis was raised, a test was initiated that was intended to produce new data and then those results assessed vs the question and expectations.
That to me is Investigstion, not just observation and that becomes one of the places where I divide between investigation snd the "as I see thrm" observation skills of perception and insight.
If someone looks in a room and I get asked "do we see any secret doors", I use percrption for any of those that can be seen without investigations.
But if they describe a search, something active like rapping on wall panels etc, that's interacting snd creating new data to analyze- so for me that shifts to investigation.
If it's a subject that interests you and is relevant to this discussion, do you have other criteria for when you feel you move from perception or insight as the way to resolve a uncertain result?