The issue is how you measure an impact. It's much more difficult to show a big drop in crime if you're improving the safety and security of women in an area of a city. You don't expect to see a drop in crime as a result of that, but you may have an improvement in how safe people feel, so that's one issue.
The other problem is that if you're working with a small study, with a small number of children, you're not going to be able to show very well statistically that you have a major impact if you don't have a large pool of kids. So you have to be working on a project where you have sufficient numbers of people. I think the Peterborough project is working with groups of 1,000 men, which is a pretty reasonable number so you can be sure statistically that you are seeing an effect in terms of a drop in reconvictions.
This is one of the issues. I think many of the models that have been developed deal with youth at risk, youth already involved with the justice system. I think these are very valuable projects to work with, and I think some of the prison reintegration programs are as well. I think it would be more difficult to.... Well, perhaps you could produce some social finance for situational prevention, but I don't see that there's such a gain for the social finance approach in quite the same way.