in chimp culture there is no taboo against this act, like there is in human culture. this suggests that at one point humans were banished from the garden of eden while chimps remained there. in other words, early humans at some point decided that eating brains and entering into these wild ecstatic trances weren't good, but bad and so they put a stop to it. at least thats how the story goes. there are some researchers into early human and ape culture who suggest an alternate theory. that while eating the fruit of knowledge was indeed prohibited, certain antinomian rituals were still practiced by the elite in secrecy, giving rise to the many religious initiation mysteries. we see in ancient statues that strange birdmen pick pinecones and put them into baskets. this has been interpreted as pineal glands by esteemed researcher Max Mullerman. what they do is they eat the brain and the many chemicals there cause them to have a religious experience. of course this creates a great degree of instability, because you cant have a stable group where hunting and eating brains is practiced openly. it would collapse after a critical mass is reacched. so what the early masters did was to make prohibitions against the act of consuming the brain, while maintaining the privilege for themselves. we can, by looking into the head hunting practicing of new guinea determine that this banishment from the garden of eden must have happened sometime after the development of primitive technology, as this practice continued among the peoples here, developing into a more sophisticated form where eating the brain meant absorbingt the soul of the victim. this may also be the form in which this practice persists among the elite.