A bunch of my friends have been taking a condensed, but seemingly accurate 50-question Myers-Briggs test (I got INFJ on it). I was really surprised that some people's results were not quite what I expected them to be. I am always close, but I'm not always 100% correct.
I had a friend I thought was a TEXTBOOK ISTJ...Very conventional, and not really a risk-taker from my experience...But he's actually ISTP.
Someone else, wasn't 100% sure, but thought she was an ENTP...She's actually an ENFP.
Another guy, could've sworn he was an ENFJ because he had really strong Fe...He's actually an ESTP.
Then in one case I was ass-backwards wrong...I thought one friend was an ESTJ probably (though it was a guess)...He's actually an INFP!!!
Another friend I probably would have pegged as an INFP (although it would be a wild guess), was an ISTJ!
I guess I don't know my friends as well as I thought...