One of my best friends is... well, I don't know his type, but he can't possibly be anything but an INTJ. The joke amongst our group of friends is that he's Sheldon. In any case, he's very blunt, but very genuine, and - it goes without saying - smart as a whip. He's currently getting a Master's in radiochemistry. Another one of our friends, who I wouldn't be surprised to learn is also an INTJ, is a physicist, and the two INTJ's SO's are both at least scientifically literate (one of them studies child development, and I've honestly never been sure about the other, even though I count her among my closest friends), and two of our other friends are med and vet-med students, and I seventh-wheel it as a biologist, and the lot of us often get together for board games when we're in the same state and end up talking science over something like Pandemic. It's great.