These attitudes develop long before adulthood, however, often on the playgrounds and in classrooms, where perceived inadequacies chip away at girls' confidence levels. This happens even when all evidence suggests otherwise. Everyone — teachers, parents, mentors and friends — needs to encourage girls to take academic risks, dare to be wrong, speak up even when unsure, try new things and pursue harder challenges. By pushing through what may feel uncomfortable, girls and women begin to experience the benefits of risk taking and grow more confident as a result. Everybody wins then, both the women who are free to explore their ideas and the world that benefits from them.