Cognitive foundation of social network (from Dan Sperber's blog)

... reasoning, typically seen as an activity of the individual thinker, is in fact a social activity aimed at exercising some control on the flow of communicated information by arguing in order to convince others and by examining others' arguments in order to be convinced only when appropriate ... (http://www.cognitionandculture.net/home/blog/9-dan/685-creative-pairs)

Si veda anche l'articolo di Mercier e Sperber