There isn't a huge difference between INTJs and INFJs deep down, it's in the superficial externals that the differences appear, but because that's what we show to other people those differences get amplified out of all proportion. Both types soak up and live the contraditions of existence and feel its logic, its glories and its pains - more so than other types perhaps. INFJs express this outside themselves with logic flavoured love, and INTJs with love flavoured logic. Both types need time to absorb and integrate new information when it conflicts or adds novelty to our inner Ni perception - and I mean hours or days, not seconds or minutes, when there is a big disconnect between them. If we are pushed into a response in the moment, you will almost certainly get a false consensus from an INFJ which will feel harmonious, because we are good at it, and a hard edged argument from an INTJ. People who want us to absorb conflicting new information or perspectives and want us to see things differently, need to give us plenty of time to process it. I think Ni dominant folks of both types are the most accommodating of new insights, but not instantaneously. Of course once a conflict has been created, we can be the most stubborn as well at defending our positions against invaders - again with passive agressiveness from INFJs and active agressiveness from INTJs. These seem very different from the outside, but I don't think they are different at all that much at the roots.
