Some additional pieces in the jigsaw puzzle of innovation and technological culture: Comment on "To copy or not to copy? That is the question! From chimpanzees to the foundation of human technological culture" by H. M. Manrique & M. J. Walker
1 Unit of Cognitive Primatology, Institute of Cognitive Sciences and Technologies of CNR, Via Ulisse Aldrovandi 16b, 00197 Rome, Italy. Electronic address: gloria.sabbatini@istc.cnr.it.