Over the last several decades there has been a growing wave of concern over the use and abuse of mind-altering substances that has left in its wake increasingly large expenditures for what is familiarly called the "War on Drugs," despite the simultaneously ever-expanding body of evidence attesting to that war's failure. Politicians running for public office routinely promise to solve these problems, but this only seems to mean filling our already over-crowded prisons beyond capacity with more people, many of whom may have done little more than use an illegal substance. The costs—both human and economic—to our society continue to skyrocket.