When I take magic mushrooms, I tend to push the limits of my understanding of what language actually is and how much I truly understand as opposed to just labelling things with symbols and sounds and saying that's that. They propel me to push deeper and deeper, becoming aware of linguistic dissatisfactions with whatever's on my mind.
Weed has expanded my mind to see more possibilities, and it can be very stimulating in this sense. If I am lost weed can help me find my way. Common sense is concomitant with the weed high. Chemical signals being transmitted to me and guiding my way of life from this plant in harmony with nature tend to lead to down to Earth realizations that can indeed be understood easily when they are known, but the essence is lost or overlooked when an attempt to communicate through language is made (deep zen contemplation of proverbs), hence the use of chemical catalysts in nature by the universal mind for swift advances in information and structural neural changes leading to tendencies for less self-oriented behaviour more constructive overall to the Earth, for which a prerequisite would be an expanded reformulation of who the self is.