I understand — doctors are responding to the catastrophe of the opioid epidemic. In 2016 alone, more than 42,000 Americans died from opioid overdoses, and about 40 percent of those deaths involved prescription opioids, according to the Department of Health and Human Services. Any American who has turned on a TV or opened a laptop or looked at a smartphone during the past few years knows that opioids such as OxyContin are addictive and potentially deadly. Who has been responsible for the carnage? The greedy drugmakers and equally rapacious doctors? The patients who gamed the system to get more painkillers than they need? Some combination of all of them?