system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
Why don't women have beards?


assistant
Facial hair is typical in our ancestors, but now it's absent in most women. The difference seems down to evolution. Humans have become less hairy in the millions of years we developed from apes. Over time, men came to prefer women with little or no facial hair. Those women will pass this "hairless" gene to their daughters. Then those girls would have a head start in the ancient dating game.