What they fail to distinguish is a deterrence on the one side and separation and incapacitation on the other. We know there is a direct effect on the crime rate by keeping a dangerous person in jail for a year, for example. We have a very clear impact on the crime rate.
It's the general deterrent effect that is more questionable, and you'll have various studies. I think the point was made by Mr. Murphy that there's probably a need for more studies actually on the deterrent aspect. I don't doubt that for a moment. On the incapacitation, the separation, and the benefit, on the impact on the crime rate, there's no question about that.