I resist summing people up so simply. I may sense someone is being "fake" in a moment, but I don't judge them as fake over all.
I've been totally fooled by people too.... It wasn't a matter of not trusting my instincts, but that person being very good at fooling people. Other times, I wanted to give the person the benefit of the doubt, because I saw potential in them.
For example, I know this ENFJ who can seem phony (one of the only ENFJs I know who actually fits that stereotype), and I'm not the only one who thinks so. He has a rep for it... However, unlike many who dismiss him as totally phony, I see genuine motive driving it. He's phony nice, but the nice is a genuine desire to treat people well, with the phony aspect being a matter of him not personally finding someone appealing. Understanding why people are being fake is huge, IMO.
I'd like to say my knack is to understand WHY people likely are a certain way over knowing for sure they ARE that way & making a simplistic judgment that labels them.
you did a MUCH better job explaining a couple of points I was about to come back and address
ENFP: We put the Fi in Fire
Motivation: Dark Worker
Alignment: Chaotic Neutral
MTG Color: black/red
Male Archtype: King/Lover
"You are a gay version of Gambit" Speed Gavroche
"I wish that I could be affected by any hate, but I can't, cuz I just get affected by the bank" Chamillionaire
I have an INFP friend, he has the potential to be as phony as they come when meeting new people. Technically everyone has the potential to be a bit phony in said situation since we all have the ability to feel and perceive. Deception is a great tool to save energy in situations where excessive small talk is involved; I don't see why everyone is so obligated to have a consistent experience with another individual. I guess it would be more acceptable if said individual mastered their skills of deception, lazy bastards!
It really helps online. RL isn't really as good because you still have to find a way to interact with people full of BS and not give off the vibe that you know they are full of BS. Online you can just avoid them and watch other people enjoy rolling in the BS. It's amazing how many people find BS "mysterious"