Most girls are taught to avoid risk and failure. We’re taught to smile pretty, play it safe, get all A’s. Boys, on the other hand, are taught to play rough, swing high, crawl to the top of the monkey bars and then just jump off headfirst. And by the time they’re adults, whether they’re negotiating a raise or even asking someone out on a date, they’re habituated to take risk after risk. They’re rewarded for it. It’s often said in Silicon Valley, no one even takes you seriously unless you’ve had two failed start-ups. In other words, we’re raising our girls to be perfect, and we’re raising our boys to be brave.