Have you fellow INFJ's ever been told that your potential was not fully tapped?
Has it been to told to you USUALLY when you have had an outburst of frustrated temper and been told that your IQ needed to be balanced with better EQ, bla, bla.
Have you felt like you wanted the person to back off and leave you alone?
Do we INFJ's come across to some types as woefully inadequate in the emotional department? Any other types relate to this? The INTJ for instance?
I think its more of a reflection of difference in emotional structure, relative perception, difference between Fe and Fi. Fe is quite externally orientated so it can be percieved as superficial by Fi and Fi can be percieved as selfish by Fe the other way, its just difference, each has its good nature and conducive to society.
I haven't found it where INFJs are emotionally inadequate, but to be fair I haven't met many INFJs in IRL. In terms of INTJ, Fi is teritiary and not seen externally as such easily, Fe is not even in the first four functions, they can come across as very focused on external logic, and not expressing emotion, be quite direct aswell, which can sometimes come across as unconcerned about emotions. Each individual has the capacity to have a good T/F balance though, including INTJ.
Its also tied into introversion, extroverts tend to think with others, bounce ideas, but introverts tend to do that better in introspection, especially INFJ, sometimes silent for awhile, which people percieve that as detachment, when the person is experiencing emotions quite a lot, during that process.
I can't say for sure about untapped potential. It depends on a range of factors, not limited to a specific type. Many types can have untapped potential in varied contexts. In terms of INFJs, I would say that they have such great understanding of the human mind and heart, that couple that with a high IQ, if not utilised would seem like untapped potential.