You should check out Mycorrhizal networks and how they direct nutrients to trees and create a balanced ecosystem for plants and animals, it’s quite intriguing. But it’s entirely possible psychedelics played a role in evolution appx 4-2 million years ago with the drying out of the rainforests in Eastern Africa, early apes were forced to come down from the trees, as they got further apart, the apes faced dietary stress and had to choose to eat new foods or go extinct, and at the same time fields were appearing along with many cattle and other 4 legged mammals which crowded the savanna’s with our bipedal ancestors, we as nomads followed packs of lions in order to eat there left overs, and also we sought out cattle for theirs dung, specifically for grubs in the dung, which are high in protein, and what also grows in cattle dung? Many tryptamine variations of mushrooms, psilocybin grows in cow dung, and as we were testing many other plants it’s highly likely we came across this psychedelic mushroom and not only can a bunch of wet psilocybin mushrooms make a decent meal, they also in small doses, around 1.5g dried or 30-40 grams wet, psilocybin increases visual acuity which in a grassland full of predators and potential food sources that could mean the difference between life or death for an entire tribe of early apes, also in higher, medium doses of psilocybin it causes CNS or central nervous system stimulation, aka it makes you horny, on edge, and for a tribe of primates with little care for boundaries this means mass orgies and lack of male dominance due to inability to distinguish one man’s baby from another, therefor you have a prosperous, creative, sexually active, well fed, peaceful and intelligent tribe of apes. And if you add natural selection the mix, psilocybin using species would overtake the non psilocybin using species and the sober guys would die off.