To clarify for you, I was being sarcastic about SF types, and not when I said F is not emotion, etc. It isn't.
Here's the basic socionic elements and what they are:
= internal statics of objects
= external statics of objects
= external dynamics of objects
= internal dynamics of objects
= internal dynamics of fields
= external dynamics of fields
= external statics of fields
= internal statics of fields
External means visible, measurable, quantifiable, while internal means invisible, immeasurable unquantifiable, or is sometimes referred to as objective and subjective, but I think this confuses things.
Dynamics is the process, change, movement, while statics is the state, current conditions, snapshot.
Objects are objects: things, people, items. Fields are fields, like a field of static electricity, groups, setting, matrix, relationships.