I feel like the ability to "know who people really are" or "Having a feel for people" or "good gut instincts" can either be a nature talent or learned. This could cross into "empath" territory in some ways. I am one of those people who can size people up upon first meeting them and know how to interact with them. I am very friendly and get along well with everyone. I suppose being friendly could be a problem but I believe most people are ok. I tune into my body and sense when I meet new people and form an opinion about them in minutes which I suppose could be bad but it seems to have helped me navigate through life pretty well up until this point.