Originally Posted by
hkkmr
There is no function you don't use or can't use, but your ego function usually preempts your super-ego functions, this is especially true during adolescence and early adulthood when one is focused on creating one's identity.
The third function is a bold function, when the first 2 don't work, you start using the third one and often quite fluently. I'm not sure if the third function is a true sore spot, it's more of a inconsistent, unreliable spot.
This is one of the reasons the EP types can be good in emergencies, they all have Ne or Se in the 1st or 3rd functions. Both of these functions are creative and mobile, very good for quick thinking and problem solving.