When I was a Operating Systems Engineer for Honeywell Information Systems in the mid-1980s, I had several supervisors who were overtly sexist. This was nothing new to me as I had majored in math, often was the only female in graduate math courses, consistently beat most of the other students on tests, etc. I had become the first female hardware field engineering specialist in the US before going into operating system software. I never suffered from lack of confidence in math, especially logic, because I was always one of the best. When I switched from hardware to software, I went to several of the most advanced training courses. I made perfect scores in the courses and earned high praise from the instructor. When I returned to my cubicle, my supervisor expressed concern that I might have found the training difficult. He hadn’t even checked how I’d done — he just assumed I wasn’t very good.