Part of that, certainly, is the public commissioning process. The social impact bond can't proceed without an agreement by a public commissioner to pay for outcomes. So there is that final check, at least, at some stage of accountability, in engaging the public sector.
But I think it's equally important to think about these tools, the social finance space, as being oriented very broadly to the efficient allocation of social investment toward impact. In the same way that the traditional capital markets are very good at efficiently allocating toward risk, this is thinking about effectiveness toward impact. So for given investors, say a foundation, that are interested perhaps in crime reduction, for their ability to actually use tools like social impact bonds, it's part of a portfolio across their operations that actually allows them to learn, to develop, and to create much more rigorous knowledge as to whether or not those interventions work, and if they ultimately do work, to actually recycle that capital back into things that actually work because of the outcome payments that occur. So it allows much more of a revolving activity toward what are more effective interventions.