There is one aspect of silicon valley, hi-tech businesses not covered in this description, Startups and Startup founders. Why don't more women create hi-tech Startups?

I've often wondered about this. You don't need permission. You don't have to ask anybody. All you need is an idea and even that doesn't have to be a good one. You do need to be obsessed with making things and you do need to have a technical background. You also have to find users and make something they want. It helps if you can make your Startup Ramen profitable. It's not as if it's Rocket-Science. None of those concepts are beyond either gender. You don't even have to even be extremely bright, just more determined than you competitors.

There is one other ingredient that you need as a hi-tech founder for a Startup and that's another co-founder. This might go some way to explain the lack of Startup companies founded by women. They simply can't find enough like minded friends with similar interests. Women need to found more tech companies instead of working in them and for them. If more Women created their own Startups, it might go some way to reduce the kind of inequity in established companies. There is risk, failure is the norm. So build that demo and become a master of your own tech destiny instead of offering lame excuses like the one above.