Some time in the last fifty thousand years, with the invention of culture, the biological evolution of humans ceased and evolution became an epigenetic, cultural phenomenon… technology is the real skin of our species. Humanity, correctly seen in the context of the last five hundred years, is an extruder of technological material. We take in matter that has a low degree of organization; we put it through mental filters, and we extrude jewelry, gospels, space shuttles. This is what we do. We are like coral animals embedded in a technological reef of extruded psychic objects.