this came to my mind when my INFP friend told me that he felt bad for neglecting me and our ENTP friend once when we were hanging at his place. INFP was on his other computer making music for a while, right next to us and we were playing with his new computers touch screen. we didnt mind that INFP was doing other stuff, but it still made him feel bad that he was neglecting us.
i didnt understand why he would feel bad about it since it didnt bother me and the ENTP. personally i would never feel bad about something like that, unless it bothered other people. but then after he tried to explain it few times, i understood that this came from his Fi. later i asked if our INTJ friend understands any logic in this, and he totally understood the INFP with this since he could relate to his Fi.
i think this is great way mbti can help to understand others. before i learned about Fi and understood how it works, i would have just argued with him and telling what he did was stupid and irrational..
anyone got similar stories to tell or have something that you dont understand about people due to different function usage?