Teaching people how to use drugs is not a demonic, evil thing to do, it's a way of saving lives and keeping people healthy. Most drug services in this country are designed to get people to give up taking drugs. But most users are determined to carry on. Should they be sent away to get on with it until they're ready to quit? Alan Parry , director of the Maryland Centre, Liverpool, argues that with AIDS on the scene, approaches that seemed unthinkable in the past have to be considered now, to stop drugs problems getting out of control.