So the Tree of the Knowledge of Good and Evil turns out to be the opium poppy. Interesting theory.
Yes, I think so. It did not give Adam and Eve the knowledge of "good and evil" as the Bible purposely states, but removes the inhibition of prudent judgement between good and evil. That passage of the Bible, IMO, is the first "Just Say No" advertisement in human history.
I would like to go on record, however, to note that any of the above theory excludes substances such as Guinness and the like. Thank you.