Your result for The Hopefully good MBTI Test ...
You are most likely an INTP. Okay, this is your result. Your functions are listed below.
So, remind me again why this test gives you a variable preference order, and then tells you that your preference order is exactly the same as MBTI Archetypes. Don't you think that's inconsistent?
Pure function theory doesn't have any place in MBTI's arbitrary assignment of preference order. Whether these questions amount to function theory is questionable. It seems like you just rehashed old tests and called it your own.