Postnaturalism is the theory of the postnatural, a term coined to describe organisms that have been intentionally and heritably altered by humans. Postnaturalism is a cultural process whereby organisms are bred to satisfy a specific cultural purpose. It can be used to read these organisms, which serve as insights into our culture by reflecting desires and beliefs prevalent at the time of breeding. This has direct implications for the evolutionary path of these organisms, whittling down undesirable traits to leave only those culturally sought out. Postnaturalism argues that in so doing, humans have and continue to actively alter the evolutionary path of a postnatural organism to suit our cultural desires. The agricultural practice of monoculture, for instance, is just one example of postnatural organisms who have been bred to such an extent that the modern-day species look nothing like their pre-neolithic counterparts. The breeding of these species for this purpose can be seen to be reflected in notable diet changes during this period, which proliferated during ensuing sedentism and urbanisation.