Legal pot is not causing the sky to fall

More early data coming out of Colorado indicates that the legalisation of cannabis has not resulted in more young people consuming it - rather, the trend is in the opposite direction. Sooner or later, I think prohibitionists are going to have to give up one of their central arguments - their claim that legalisation will create "a tsunami of stoned zombies" wandering the streets. It was always a circular argument, based only on the assumption that prohibition prevented use in the first place.