Talk:Beau Geste hypothesis

Introduction of the hypothesis

The article says the Beau Geste hypothesis was introduced by John Krebs in 1977. But an earlier version of it was published in 1976 in chapter 7 of The Selfish Gene by Richard Dawkins, a colleague of Krebs at Oxford (It is possible that the reference to the hypothesis was added to a later edition of the book, so I may be wrong).