You’re completely discounting networks, yet most of what people achieve comes through them. Nobel physics prize winners in the 20th century were very often Jew

You’re completely discounting networks, yet most of what people achieve comes through them. Nobel physics prize winners in the 20th century were very often Jewish. And that’s neither evidence of bias for them in the award process, nor evidence of some kind of genetic superiority. The Jewish researchers just happened to be in the right place at the right time with the right networks and mentors. Apply the same logic to the lesbian firefighters. Their leadership positions probably don’t have anything to do with either their genetics or any bias, but their personal qualities and their networks. Being a conspicuous “outsider” in the system may have helped them develop relationships and leadership skills.