A new $20 million 15,000 square foot exhibit has been built around a central question: “What does it mean to be human?” says paleoanthropologist Rick Potts, director of the Smithsonian’s Human Origins Program and curator of the project. It all makes good sense, which means that it is about to be attacked by a huge numbers of people who dread the idea that they are human animals. If only these anti-science types would learn to take deep breaths to follow the evidence wherever it leads. They would find that we humans are part of an immense and intricate tree of life. what possible concocted story could be more amazing than that?