I find this hypothesis truly bizarre. Since almost the late 80's I have been in one of these (clever acronym du-jour) STEM fields, and have yet to NOT have wor

I find this hypothesis truly bizarre. Since almost the late 80's I have been in one of these (clever acronym du-jour) STEM fields, and have yet to NOT have worked with women in my group, as peers. (My background is primarily writing banking software, if that matters.) I've never NOT worked with a female geek programmer either at my level or above. My anecdote is not data, but neither are vast and wild generalizations like you are making.