 We conclude with an interesting, but still relatively unexplored issue that concerns the relative importance of thought experiments in different disciplines. Physics and philosophy use them extensively. Chemistry, by contrast, seems to have few or none at all. Why is this the case? Perhaps it is merely an historical accident that chemists never developed a culture of doing thought experiments. Perhaps it is tied to some deep feature of the discipline itself (see Snooks 2006). Economics and history use thought experiments, but apparently not anthropology. A good explanation would likely tell us a lot about the structure of these disciplines.