Generally, how important were psychedelic plants in human history?

This is a wide subject and with wide meaning and significance as well. The interesting aspect of this is, once again, owing to your extraterrestrial opposition who have downgraded human perception to greatly diminish the intuitive reach. This was done mostly to reduce your power of imagination. They do not credit the divine realm as a meaningful entity and a source of true inspiration, and many kinds of power that can be brought to bear. They simply know that when humans put their minds together things can happen not to their liking, and in exploring your genetics, which they have done for thousands of years using you as guinea pigs to make endless gene alterations, they devised fairly early on a way to dim your reach and dumb you down in the process. So, the ability to see beyond the self is really what is involved in this story. People have deep spiritual yearnings within. They know innately they are disconnected from something and they feel isolated and adrift, and they seek something more than the prosaic level of human conscious awareness. This is a big reason people look for ways to experience a loftier sense of things and higher awareness to see more dimensions about something than their ordinary thoughts reward them with. The psychedelic substances begin to mimic the experiencing of the light being who can think about something in a kind of multi-dimensional matrix of sound, light and feeling, as well as knowledge and a very deep knowing of its significance and the range of influences it may portend. Humans do not think this way. They are very limited, literal-minded, and sequential in the stream of thought, and can only hold at one time a small idea in conscious awareness. There is a reason people long for mind expansion; it is because they were once light beings and not so very long ago, a few short years. That is the merest blink of an eye in the context of eternal existence. So that is the yearning and creates an appetite for experiencing something more, and there are many natural substances in nature that produce profound effects on conscious awareness and influence, at times, both thought perception and interior sensations, and can be a quite powerful interplay of emotion and physical feelings of wellbeing, of inner joy and a quite profound positive visceral pleasure, and when coupled with expanded ways of seeing and perceiving and thinking about things, this seems to be quite a revelation and is certainly extremely enjoyable and can become addicting for that reason. Most such experiences are a kind of illusion because they are an interplay of multiple exaggerations being experienced simultaneously, but without an underlying reason or rationale or purpose. It is suddenly having a magnified capability to experience something on multiple levels and types of sensation and awareness, but that is not the same thing as a magnified meaning or purpose—it is simply circumstances of the moment. So, if people are gathered in a group and sharing a psychedelic substance with one another and begin to have a kind of mind expansion, what happens will be limited by what they have within. It will not be added to by the universe at large. It will be only what they can summon individually and perhaps collectively through a shared communication of their individual experience that can influence one another and create a kind of communal event of sorts. The stories are legion of people feeling such profound capability and lofty heights of intelligence and deep understanding, and make a recording of their thoughts or write something down to be remembered always, but when the substance wears off, realize they were truly focusing on something quite mundane and trivial but with expanded appreciation that was, in its manifestation, an exaggeration in some respect. So, what we are saying is that the magic mushroom is not truly magic. It is a kind of manipulation of the sensorium that can be pleasurable, but will not lead to a true enlightenment. There are moments of thought that can happen under the influence of such substances that can be a catalyst for change and growth as well. This is the attraction of ayahuasca, which is a sacred substance for many indigenous peoples. So, it is a function of what you do, always, with your mind that matters, not simply the fact you have a mind. Most people waste their lives by not doing anything of true value for their soul’s progression. So, if such a substance is used with an intention for soul growth and higher awareness, it can create an opportunity for a personal enhancement of their awareness that can persist and offer something to build on, but such exercises still have many, many limitations and will only take a person just so far. So, we would say this is largely not an answer or a destination to be seen as a goal for how to spend one's time and energy, but rather a reminder there are bigger and better ways of being, not available to you here and now as a physical human, but that await you in higher dimensional realms to which you will return, and fairly soon.