The economistic fallacy is a concept originated by Karl Polanyi in the 1950s, that refers to fallacious conflation of human economy in general, with its market form. Whereas the former is a necessary component of any society, being the organization through which that society meets its physical wants, i.e. reproduces itself, the latter is a modern institution that is neither autonomous nor stable. The fallacy can occur either by narrowing the genus "economic" to merely market phenomena, or overextending "the market" to encompass all aspects of human economic activity. These moves can be seen as equating the conceptual content of "economics" with what is in fact mere form or ideology, instead of with the substance embodied by the specific decisive relations in which humans are engaged in any given period and locale.