I teach sections of introductory computer science classes at a certain California university with an excellent CS department, and the profs have gender data on

I teach sections of introductory computer science classes at a certain California university with an excellent CS department, and the profs have gender data on CS classes / major declarations going back decades. Back in the 80s, when CS was still emerging in popularity, CS had the highest proportion of female enrollees of any engineering undergraduate discipline. The gender gap and sexism that we see in IT, CS, and related fields isn't inherent to the field. It's a relatively recent cultural phenomenon