Uncontrollable stereotypes

I used to teach and have been as objective as I could in terms of evaluation--which is easy especially since when assessing knowledge of anatomy--a femur is a femur and there's no other interpretation of that. Wrong spelling wrong. A femur is not the same as the humerus. The ilium is not the same as the ileum. I have had colleagues ask essay questions either as bonus items or for the sake of having some subjective control especially if they particularly don't like a student. Let's face it, teachers are humans...hominids...humanoids...from Kingdom Animalia. Anyway, I suppose having whatever is part of my identity making it difficult for me to break all the preconceived notions about my kind. XX chromosome, parental unit, natural sciences, alien Third-worlder...I thought I had no self-esteem left after going through a few peer-reviews, but wow. What I feel now is like the equivalent of that nothingness in between electron orbitals. Then again, I may be a boson. That's not too bad. I exist--that's a good thing, right?