There are many interesting facts and plethora of Theories about Human evolution. How archaic human became so much different from their ancester apes.One such fact is the Stone Ape Theory by Terrence McKenna long back in 1990.
The most near ancestors was Homo Erectus but there was sudden Doubling of brain in 200,000 years which lead to evolution of Homo Sepiens( Human). What happened in this Era that lead to this massive Development of Human Brain in just blink of eye?

The Story Goes Like this…
There was a sudden climate change in Africa. Food became scarce which forced the early Primates to migrate to tropical region in search of food.
There they found some mushroom growing over dropping of other animals. These dropping provided a suitable environment for the fungi mushroom to grow over it. Since there was scarcity of food it forced the early primates to eat those mushroom.

These mushroom were psychedelic in nature. These mushroom were popularly called as Magic Mushrooms or psilocybin Mushroom. These Psilocybin is a substitute of Serotonin which lead to neurogenesis in primates. The brain cells neuron increased in number thus the thinking power of brain increased.

This sudden brain growth lead to increased thinking, attention and analysis skill. It increased sexual drive. The language skill took a leap. Developed cognitive skills and lead to genetic diversity. Thus evolution of Mankind

This Stone Ape theory was coined by American scientists and ethnobotanist Terence McKenna in his 1992 book ‘Food of the Gods. Further its chemical Explanation was taken forward by a mycologist Paul Stamets.

To get really high is to forget yourself. And to forget yourself is to see everything else. And to see everything else is to become an understanding molecule in evolution, a conscious tool of the universe.
Jerry Garcia
Wonderful… only way for a peaceful world and society…. LSD … the doors of perception as per Aldous Huxley … in fact he took on his death bed
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