https://www.youtube.com/watch?v=YPUrg_0c6Vw
https://www.youtube.com/watch?v=eumNiOfMvwI
https://www.youtube.com/watch?v=gJ7bIRXfmOk&list=PLL2qQq4Yh1JcSiQEEpbK5iw2Nc25zr8cn&index=13
http://www.podcastscience.fm/dossiers/2011/10/05/dossier-le-langage-chez-lhumain/
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