People have at least tried, however: http://upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Rational_scale_to_assess_the_harm_of_drugs_%28mean_physical_harm_a

People have at least tried, however: http://upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Rational_scale_to_assess_the_harm_of_drugs_%28mean_physical_harm_and_mean_dependence%29.svg/500px-Rational_scale_to_assess_the_harm_of_drugs_%28mean_physical_harm_and_mean_dependence%29.svg.png http://upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Rat...