A random fun hypothesis by Paul Staments (in my own words): that the neocortex in humans evolved the way it did, because hominids have been consuming Psilocybin mushrooms for millions of years (until Christians and Nixon banned them and pushed the rest of the world to follow). In other words: there's symbiosis between hominids and Psilocybin mushrooms. Psilocybin mushrooms as food = more intelligent hominids (after the trip) = higher survival rate of hominids = higher survival rate for the mushroom due to active conservation by hominids.
Fun fact (according to Staments): Psilocybin mushrooms occur in higher concentrations around human settlements than in "wild nature" (still today).
No bible but mere history and tradition. That's where the original 'intent' came from.
>why should anybody care?
You shouldn't. This is just a comment on a certain kind of people that likely won't have any effect on them and that they are free to ignore.
Cool theory though. Do you have some links to dig into it? Also could it have applied to other naturally-occuring psychedelics (salvia divinorum, mescaline cacti, etc.)?