Are you so certain our model of human behavior has gotten better? We face a similar, although less direct, problem with drug prohibition today: due to following

Are you so certain our model of human behavior has gotten better? We face a similar, although less direct, problem with drug prohibition today: due to following outright prohibition over regulation, innumerable people are affected by tainted, low quality or overly potent drugs who instead could have been helped by harm reduction programs and regulated substances.