> **Evidence** > To support his claim, McKenna used studies from the Hungarian-American psychopharmacologist Roland L. Fischer dating back to the 1960s and 1970s to underline the purported effects psychedelics would have had on mankind. > McKenna claimed that minor doses of psilocybin improve visual acuity, including edge detection, which bettered the hunting skills of early primates and thus resulted in greater food supply and reproduction. At higher doses, McKenna contended that the mushrooms would increase libido, attention, and energy, resulting in greater reproductive success. At even higher doses, the psilocybin would promote greater social bonding within early human communities as well as **group sex activities, resulting in greater genetic diversity from the mixing of genes**. McKenna also theorized that at this level of psilocybin intake, it would trigger activity in "language-forming region of the brain", resulting in the mental development of visions and music and kickstarting the development of language by enriching their troop signals. According to McKenna, psilocybin would also chip away at internal ego and make religious matters the forefront of the mind. I don't find it convincing personally. If magic mushrooms give people super powers I've yet to see it. I'm not sure group sex is the origin of consciousness.