Ni, introverted intuition - the memory function

[Pallas]

Honestly -- the rational/irrational dichotomy is itself rather obscure. I see it as being more closely related to symbolic thinking vs experiential, picture-based thinking, rather than judgments vs perceptions. But in any case, it's not one of the stronger categories in socionics, compared to logic, ethics etc. Don't abandon socionics just because of that

As for epistemic and situational judgments -- they seem similar from an IM point of view. Roughly speaking, "may" = Ne, "must" = Se (with Ti).

But logic, ethics, etc. make pretty much no sense in isolation. Generally everyone can use logic and everyone has feelings, and the type stereotypes are mostly nonsense. I also wasn't going to really abandon socionics so much as continue to study it but fit the stuff into my own framework, since it seems to be divergent enough that I can't call it the same thing.

[Exodus]

But logic, ethics, etc. make pretty much no sense in isolation. Generally everyone can use logic and everyone has feelings, and the type stereotypes are mostly nonsense.

I'm not sure what you mean by this. Why is it hard to accept that the logic/ethics dichotomy is more observable than the rational/irrational dichotomy on the type level? And what does that have to do with "stereotypes"? And if we're talking about the IM elements, logic and ethics are simply more specific and more concrete categories - I don't think anyone would dispute that.

I also wasn't going to really abandon socionics so much as continue to study it but fit the stuff into my own framework, since it seems to be divergent enough that I can't call it the same thing.

Well sure, everyone does that. You just have to see who is making the most sense I guess. You seem to not be making much of a distinction between Jung and socionics though, which is why you may be confused and think there is no convergence.