Capital in the 21st Century, the new book from French economist Thomas Piketty has been making a splash in recent weeks. Why is this book so powerful? It essentially calls out one of the inherent flaws in capitalism, that the ratio of wealth to income rises until the economic elite are those with inherited wealth and not the workers that support them. This leads to rising inequality, which has been proven to be a destructive force. Among other solutions, Piketty suggest a global wealth tax that helps to redistribute that wealth across all levels of society. For more on the book and the reasons it is making so much news, read this article.