This article examines the nature and reproduction of ‘institutional idiocy’, seen as a form of collective cognitive incapacity generated by cultural conditions. It shows idiocy to be active in numerous paths, wearing different clothes and taking dissimilar forms, spreading to the extent that it dominates communities. An empirically driven framework is established for idiocy-dominated communities – communities with access to futile education and fruitless technology. It demonstrates how idiocy-dominated communities disguise and protect their shared idiocy and handle non-idiotic minorities. It (...) explains that idiocy-intense communities are not necessarily chaotic and arbitrarily organised, entailing ‘formulas of life’, ‘identity politics’ and ‘schools of thought’. It describes that a whole community can thoroughly adapt to life without critical thinking, living in an illusion. Whereas previous works have scrutinised individual idiocy, this research goes beyond this to inspect institutional idiocy by presenting idiocy as a system (and ‘ideology’) that constitutes the foundation of groups. While such notions as technocracy and epistocracy detail the domination of cognitive maturity, this article goes in another direction by recording the domination of cognitive immaturity (idiocracy). It avoids thinking about idiocy binarily (idiocy versus intelligence), viewing it as a question of not intellect but behaviour, culture and ‘being-with’. (shrink)