Scientists R Stoopid. Really Really Stoopid.
The huge article below goes on about different types of male pattern baldness and what the possible reasons for those exact patterns occurring could be.
The answer is simple but you won’t find it in the article.
Men go bald in the patterns shown in the article because of the development of the Yin part of the body in the men and the particular way the Yin part of the body is developed. One pattern will happen to most men whose Yin part of the body develops without any kind of conscious assistance from the men. The other patterns of baldness usually occur in men who consciously involve themselves in various rituals or physical actions which cause the developing Yin part of the body to focus on particular areas of the head.