I been thinking for a while now that ethics works in a way of opposites. Lets go with that gammas are selfish (a stereotype I seen here on forums) when a bunch of gammas spend time together some of them will seem more selfish than the others and in turn the one who is not that selfish will seem to be very opposite of selfish in the situation. If two people spend time and one is acting bad and the other one is just neutral the neutral person will embody opposite of bad while he or she is just neutral. Something like this.
What I think feeling actually turn out to be is actions that make you or other people feel about self and how other feel about self, it is a judgement element and stores information that have both good and negative impact on how you feel and what you feel about things.
Far as I know Jung was most undefined on the Fi. Its a haze for me, how you think Fi actually works?