This graph shows the relationship between per capita GDP of individual countries (or the average amount earned per person per year) and the Global Gender Gap Index Score (or the amount of money a woman makes for every dollar earned by a man with the same job). There is a clear, positive correlation between per capita GDP and the Gender Gap Index Score.
The world’s most important invention—the technological breakthrough that has fundamentally changed family life for the better nearly everywhere—isn’t particularly extravagant. In fact, you probably have one.
What is it? The car? The computer? The cell phone? Not quite.