Dr Vera Rubin's three basic assumptions, that I've verified (well, the first and last, I yield to the census people for the second):
1) There is no problem in science that can be solved by a man that cannot be solved by a woman.
2) Worldwide, half of all brains are in women.
3) We all need permission to do science, but, for reasons that are deeply ingrained in history, this permission is more often given to men than to women.