I second Mr. Stuttaford. The great Robert Higgs had it right: Whatever policy it is you prefer, a crisis can be found to argue for enacting it.
I do not propose to test the hypothesis that it would take 5,000 times the recreational dosage to overdose on marijuana, but I would like to know how much bazooka one has to smoke before deciding to appoint a UN representative to alien civilizations. Is there data on that? The wigs are getting pretty tight in Turtle Bay.