ISTj: actions must be subordinated to a predefined system!

[Logos]

"Internal logic of ideas and systems?" Talk about an oxymoron.

How? Why are you having difficulty with understanding Ti?

[Krig the Viking]

Yeah, how exactly is "Internal logic of ideas and systems" self-contradictory? It makes sense to me. Ideas and systems have an internal structure which is organized logically. This is what Ti deals with.

[Edit: For example, a biological cell appears to be a single unit on the outside, but upon closer examination it's actually a complex system containing a nucleus, ribosomes, mitochondria, cytoplasm, etc. All of these elements within the system fit together in an orderly and logical way: the internal logic of a system.]