that makes absolutely no sense at all, you should invite the speaker by experience and knowledge and not anything else, the criteria should be technical and not

that makes absolutely no sense at all, you should invite the speaker by experience and knowledge and not anything else, the criteria should be technical and not political. If there was a selection criteria of newbie then you could select women over men more aggressively. I know a few great female developers but then you have to hope that they have the skills for public speaking. This needs to be done at the grass roots, not at the top level. But saying that, any top level female developer should be automatically included. There are some no doubt but they need to turn up.