Did someone push Lucy out of the tree?

Dr Behrents' editorial, "Lucy fell from a tree and plunged 40 feet to her death" in the November 2016 issue of the American Journal of Orthodontics and Dentofacial Orthopedics, is a concise, clear essay on proper science that should be read by anyone trying to find a true answer to a research question.1 It is important because it provides the background for the policy of an esteemed professional journal. Dr Behrents referred to a notorious article in which Kappelman et al2 concluded that Lucy—name given to one of the world's most famous fossils—died from a fall from a tree.

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