The alien theroy is more prevolent. I think they showed up just before the egyptians, and taught us about building, and agriculture on a grand scale. So we (the human race) could sustain larger populations. They could have easly brought cannabis plants, or seeds with them. there are other chemicals that are only found in 2 places on earth in our bodys, and in the plants that make them. shroomies, a chemical called dmt, lsa, and mdma. Mabey these plants and compounds were a way to comunicate with these beings through the astroplanes. i don't know, i'm not a scientist, nor am i a theology expert, BUT if a being came from the sky, gave my family information to live better, and flew away...... i might call them god.