I did a graduate research paper on the difference between male and female brains, so I have a few more. When challenged/angry men's brains activate the most primitive organ of the brain which induces the urge to physically fight. Women's brains activate the verbal center which induces them to say nasty things. Men's eyes have more rods which enable them to see clearly straight ahead a far distance. Women's eyes have more cones, giving them better peripheral vision. It is thought this was developed during caveman days when men hunted and women gathered and took care of the children.