Please help. I've been going over the validity of Socionics, and as far as I am at currently, the eight functions seem adequate to encompass all thoughts and actions of human behavior.
But function duality doesn't seem as consistent for me.
Basically I can understand
Te-Fi -> Better Te (organizing and getting results) helps create Fi (beneficial relationships between people) and better Fi then also helps create Te (people are willing to help each other).
Ni-Se -> Good Ni (understanding of events) minimizes or reduces waste of Se (confronting everything head-on), and good Se minimizes or reduces waste of over-thinking how events play out. Maybe, in the case of irrational functions, it isn't as much about boosting each other (like with Te-Fi), as much as it is about helping each other not overdue their irrational nature.
But I'm not as sure about the other four.
Si-Ne -> Good Ne (thorough exploration of the world) helps expand the amount of Si? And good Si (calm, healthy, stabilized enjoyment of the world) helps Ne relax from relentless exploring and enjoy what is learned and known?
Fe-Ti -> Good Fe (understanding and organization of the people of the world) helps Ti make affective and effective judgements? And good Ti (reasoning and principles) can help Fe understand more ways to understand and manage people?
P.S. When I talk about effective judgements I'm talking about the nature of Ti indirectly taking an action by determining what not to do to maximize enjoyment (and I assume positive emotions is to be taken as that enjoyment).
Is this pretty much the basis for functional duality?