After years of isolationism, the U.S. rose in the 20th century to become the world’s sole superpower. Today, economic growth is slow, unemployment and income inequality are rising, and political impasses have ground policy initiatives to a halt. America’s status in global manufacturing, education, and innovation is slipping. Many economists project that China is poised to overtake the U.S. as the world’s largest economy. It all sounds pretty bleak…but economist Charles Kenny paints a much rosier picture. In his book The Upside of Down: Why the Rise of the Rest is Good for the West he argues that Americans should stop worrying and learn to love the decline.