I've been reading a typology book and it made me think about this issue further. Here's what I've been thinking about:
T is absolute. There are hard logic, facts, knowledge. Ideally that is the same from one person to the next. It's like a map with coordinates. You can give your coordinates (= facts, logic, knowledge) to other people. It's absolute in position.
F is relative. There are values, feelings and relations within. They differ wildly from one person to the next. That is, two Fs might not find each other's coordinates despite both being Fs. Their position is relative; their world is built on how things relate to themselves. Not on absolute position like Ts.
I hope you understood my point... because now I'm applying the same principle to the other letters:
S is absolute. It's what you see, hear, taste, know, remember, etc. Two S people are likely to experience the same thing pretty much the same way. As offered... Absolute.
N is relative. It's about possibilities and meanings they see. Two N people are likely to see wildly different things in the same situation. One N experiences it like this, another N experiences it like that. Intuitions are very personal and relative to the person's own inner world.
E is absolute. It's about being open, talking your mind and "giving your coordinates" to other people. It's about adapting yourself to your environment. That is... adapting to what is there, absolute coordinates.
I is relative. It's about having your own inner world... this inner world differs from one introverted person to the next. Everything inside them is relative to themselves, not absolute in position.
P is absolute. It's about going with the flow... being flexible with the world and other people. Going with the experiences as and when they are offered.
J is relative. Each J has their own set of rules and a "think first" kind of attitude. Two Js might both say "No" to a situation, but for different reasons... reasons relative to themselves.
- Absolute is easier to understand, because it can easily be transferred from one person to another.
- Relative is difficult to understand for other people, because it's so relative to the person's unique inner world. It needs a lot of explaining to let others know what you are experiencing.
My last deduction (and the reason why I'm writing this to the NF area) is as follows:
If you are relative + relative + relative + relative... that is... I+N+F+J... congratulations, you are the most difficult person to understand