Hoe does a teenage girl know that Tech is sexist? or Electrical Engineering or computer Engineering or Computer Science?  Or Engineering in general?  The number of women going in computer science in the US has slid for 37% to 12% in CS.  What is the number of Vets ?  its about  85% know for women now.  The number of girls going into STEM in Norway is supposed to be going down (don't have a ref) ?  I don't know what the answer is but the old knee jerk answers don't seem to be holding up.