Girls . . . were allowed to play in the house . . . and boys were sent outdoors. . . . Boys ran around in the yard with toy guns going kksshh-kksshh, fighting wars for made-up reasons and arguing about who was dead, while girls stayed inside and played with dolls, creating complex family groups and learning how to solve problems through negotiation and roleplaying. Which gender is better equipped, on the whole, to live an adult life, would you guess?