I think it's just absurd to believe you can get to know someone within 60 - 90 minutes. A good liar/imposter can fool people for years. That's why you always ask for references and cross check stories.
What we call gut feeling is often a subconscious interpretation of the person’s body language, physical appearance and tone of voice. It’s always good to try to explicit why you had that feeling before basing your decision on it.
I often think that shy people are assholes at first. Now that I’m aware of that I try to test the shyness hypothesis first when I have that feeling.
So exploit it, it’s something humans developed for good reasons. Just be aware of the biais and use it as a good starting point for a behavioral interview.
I'm totally with you here. One should not try to get rid of these quick form of prejudices, because they exist anyways and they might be useful.
To make them less "dangerous" it's good to be aware of them and stay doubtful about them to give anyone a chance to proof you better.
Reminds me of how I handed my phone to a couple once and wasn't sure if they'd scam me, but I willingly took the risk of loosing my phone to be able to help people when they ask.
They where honestly quite sketchy... I still wonder if they maybe just spontaneously decided not to scam me because they felt I was prepared for it.
