in order to understand analytical psychology, you need to go for breadth in order to understand the depth of things. MBTI rests on shaky grounds because its developed only by scratching the surface of analytical psychology, this test/theory on op is similar, but even lacks the research that has been done on MBTI.
i didnt care to debate about what you said about inferior Si.
btw here is quite interesting journal article:
about quitting because the quest was fruitless. no wonder it was fruitless if you didnt go to depth and breadth on analytical psychology. or did you just study mbti or other stuff derived from jungs typology?