If it has zero benefit, then why does Marinol exist? (Besides the obvious answer that it exists to make small amounts of people lots of money for synthesizing that which exists naturally).
If it has no effect then why are there ample examples of people with constant seizures, or Parkinson's, or any number of other maladies, who try all available medicines with little effect, but who improve when they try marijuana?
"Ample" examples? How about those who try marijuana WITHOUT any noticeable effects? You forgot to mention those......
Until marijuana is peer reviewed and proven beyond the shadow of a doubt to be the magic drug you are claiming rather than a highly compensated lobbyist funded attempt to influence our elected officials to legalize it, it's just a hippy's dream come true........
you could give those same people placebos and they wouldn’t know the difference...