But if, after the mass introduction of that medicine, the number of people with the disease skyrocketed, then there’s a decent likelihood the causality does act

But if, after the mass introduction of that medicine, the number of people with the disease skyrocketed, then there’s a decent likelihood the causality does actually go that direction. With other treatments for diseases we always expect the incidence rate to decline — because the treatment works. If it stayed static or went up slightly, then the treatment doesn’t work (and you’re might have slightly higher rates due to new interest in the diagnosis). But huge increases…that’d not be good.