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This article appeared in Intellectica 2012/2 n o 58 Commentary on J. Queiroz, L. Rodrigues & S. Ribeiro: The semiotic evolution of toolmaking: the role of symbols for work towards delayed reward. Chris Sinha, Lund University Toolmaking and symbolization have long been linked in theories of human evolution, but substantiating and specifying the nature of this putative link (other than as simply co-
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