I would describe myself as the opposite of OP (very bad at reading people) so it was quite a shock the first time I met someone like this. Not only for the revelation that these type of people exist, but the experience of another person reading my "internal architecture" - and subsequently judging it - it opened a new avenue of self reflection for me. And while I think there's still a lot of the subjectivity in the author's formulation, I do have a relatively new appreciation for "people watching" insights like this now.