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Published online by Cambridge University Press: 04 August 2017
The evolution of bipedalism is considered a critical step in human evolution. To discover how it occurred, and whether it could have occurred elsewhere in the universe, scientists must study the structure of their theories as well as fossils. In particular, they must determine whether such critical steps are a function of the “data” or of the (often unwitting) use of narrative for, it will be shown, scientists tend to make sense of the past by telling stories in which everything leads up to or away from being human.