INTJ vs. INFJ. I always get INTJ on the test, but I feel more like an INFJ. However, I have bouts where I feel much more like a T than an F. Can anyone give me a checklist or a comparison chart to differentiate the two? I love math and science, but I like helping people when I can. I value logic and intelligence, but I feel like both taking over the world and also saving it. I tend to be unbiased so no one gets hurt in public, but it may just be that I want things to be peaceful around me. I struggle with this concept, so can anyone shed light on this?