What makes pedophile images so bad that they ought to be banned? The fact that they depict children in sexual acts alone? It is a fact that there are people around who like this. Banning such pics will not erase their sexual taste. I think that we can quickly agree that the really bad thing about pedophile pictures is the process of making them. Children are abused by making them. Thats the really bad part of it. Having virtual pics of that kind is like introducing a substitute drug for addicts. It contains the problem and prevents criminal acts. Therefore I think we should allow people to produce and view such pics which can be made without hurting real children. It is simply counterproductive to ban a substitute if you want to combat the real thing. Vices do exist. You cannot undo this per decree. CGI is therefore something that will rather protect chidren from real harm than hurt them. If you don't want to view such pics thats a totally different matter. We can tackle this by terms of service of forums and the like. Let them do their stuff in their restricted playgrounds where they cannot hurt real world people.