Computer programming once had much better gender balance than it does today. What went wrong?

This seems like a good opportunity to plug the hackathons at the various women’s colleges! LOL

Wellesley has a big one open to everyone (I think), as does Smith, and Bryn Mawr hosts one called SisterHacks open to the 7 Sisters (yes, even the men at Vassar.) Lots of women coding on the floor.