Philosopher of science Murray S. Davis once remarked that “The truth of a theory has very little to do with its impact.”31 History, according to Davis, shows that the legacy of a theory depends more on how interesting the theory is perceived to be by practitioners and scientists than on how much truth it holds. Earlier in this chapter, we listed criteria for good theories; now list what you think are criteria for “interesting” theories. Where do these two lists seem to conflict most, and how can scientists and the practitioners they serve generate theories that are both interesting and truthful?