I have heard that evidence. You have given that already.
I want to move quickly to the correlation versus causation issue because being the health committee, being a science-based committee, of course, technically science is based on conducting experiments, randomized control, and repeatable experiments. I've read some researchers on the subject who talk about the difficult ethical considerations in conducting research.
Technically you would have to expose subjects in a lab to violent, degrading pornography, observe the effects after, and see if they were more prone to commit violent acts. It can be very difficult from an ethics point of view. Also, there's an issue of self-selection; that is, do people prone to violence seek out violent pornography, or does pornography have that impact on people who are non-violent?
Do you have any advice to give this committee in terms of the correlation-causation issue?
I'll add one more thing, the multiplicity of factors. When someone commits a violent act sexually, there are literally dozens and dozens of factors that would go into why that person committed it. Do you have any thoughts on any of those?