Let's imagine a world where women hold half the jobs in Silicon Valley. Where half of entrepreneurs, executives, venture capitalists, board members, and employees - including engineers - are women.

[...] "I think there would be two enormous differences," the longtime tech investor Roger McNamee told me. "I think Silicon Valley would be wildly more profitable. I think there would be a significant reduction in the number of absolute failures. And so I think success would go up dramatically."