Wikipedia
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.
Postnaturalism is a highly selective process. For every organism that has become used in our society, there are countless more that have remained non-postnatural for whatever reason ranging from a perceived lack of future use from them or traits that make them too difficult to farm. One such example is the golden orb-weaver spider which produces a strong, light and useful silk, however they are known to be cannibalistic and thus impossible to farm on a large scale.