Of all the things we do and say, most will never be repeated or reproduced. Once in a while, however, an idea or a practice generates a chain of transmission that covers more distance through space and time than any individual person ever could. What makes such transmission chains possible? For two centuries, the dominant view (from psychology to anthropology) was that humans owe their cultural prosperity to their powers of imitation. In this view, modern cultures exist because the people who carry them are gifted at remembering, storing and reproducing information. How Traditions...

Of all the things we do and say, most will never be repeated or reproduced. Once in a while, however, an idea or a practice generates a chain of transmission that covers more distance through space and time than any individual person ever could. What makes such transmission chains possible? For two centuries, the dominant view (from psychology to anthropology) was that humans owe their cultural prosperity to their powers of imitation. In this view, modern cultures exist because the people who carry them are gifted at remembering, storing and reproducing information. How Traditions...