Crucial to Leroi-Gourhan's understanding of human evolution is the notion that the transition to bipedality freed the hands for grasping, and the face for gesturing and speaking, and thus that the development of the cortex, of technology, and of language all follow from the adoption of an upright stance.
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In 1956 he succeeded Marcel Griaule at the Sorbonne, and from 1969 until 1982 he was a professor at the Collège de France.
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What characterises humanity in its distinction from animals is thus the fact that tools and technology are a third kind of memory (in addition to the genetic memory contained in DNA and the individual memory of the nervous system), and thus a new form of anticipation, or programming.
André Previn | André Breton | Andre Agassi | André Malraux | André Derain | Victor André Cornil | Carl Andre | Andre Ward | Fabrizio De André | André the Giant | André Heller | André Gide | André-Gaston Prételat | André | Andre Norton | André Masséna | André Guignard | André Franquin | Andre Begemann | Peter Andre | Andre Williams | Andre Ware | André Leon Talley | André Le Nôtre | André Glucksmann | André Charlot | André Sogliuzzo | André Marie Constant Duméril | André-Jacques Garnerin | André Bauer |
Lewis-Williams goes on to discuss structuralist interpretations of the artworks, such as those first advocated by Giambattista Vico and Ferdinand de Saussure, and later reformulated by the likes of Max Raphael, Annette Laming-Emperaire and André Leroi-Gourhan.