Computer programs can recognize human faces more reliably than humans. They beat us in the board game Go which requires strategic thinking and intuition and they bluff better than the best poker players in the world. Machines make complex decisions and often do so more precisely and faster than us. Thomas Ramge explains in a knowledgeable and understandable way how machines are learning to learn and discusses the question: what will happen to us humans when smart machines become more and more intelligent?