so then we have their partners, Ti (ranks internal things by logic) and Fi (ranks internal things by personal significance) - with the caveat that "internal" really means "internal" to any
system, not just internal to oneself. so an ENFP with Fi can get a sense of the internal wellbeing (or poor health) of a group, but we don't have any means of organizing that group without a Je function, so that's where Te comes in. essentially no one can organize their external environment without a Je function. which is why you and i are both Ps, and Pe-doms - we don't tend to actively organize our external environment, we tend to "flow" with it instead, and seek internal structure (Ti/Fi). but we still both need Je if we are to deal with situations like delegation, where we need to manipulate external things. and that's why ESFJs can easily host without summoning T at all - because Fe is already structuring their external environment for them. and ENTPs can rely on their internal sense of logic to organize things - it will just be based on an ideal inner system, instead of piecing together an external system like Te. but since Ti works logically, it can
organize. whereas an ENFP trying to organize things via Fi... wow, i don't even know what would happen. i think nothing would happen. we probably just wouldn't care.
maybe that's what i've been getting at. Fi doesn't always care about the things that Ti gives you a sense of logical ordering for, and that's why we need T. but an ESFJ doesn't need T because they already have a means of organizing the external. and an INFP doesn't need it because INFP's main goal isn't to get things from the external world, it's to organize the inner world, and so they summon Si
for support instead of an external function.