Quote Originally Posted by seriousguy View Post
How? (I have trouble following the article)
Their research shows that IEI's Ni (and other functions as well) is both accepting and producing in Model A. If that actually was true in Model A, then we would not see the difference between IEI and EIE.

This indirectly supports Model D since all functions have an accepting + and a producing - , and vice versa.