There is no official textbook on it, but I would say that the area is growing in abundance. In the three years that I've been working on it, there certainly is increasingly more information available to people. There, we have to thank the intermediaries that I talked about before, for putting out reports based on projects they've been involved in, but also the academic institutions that are starting to get involved.
Harvard has a lab that's looking at this with experienced people there who have worked in government but are also in academia. Increasingly, Canadian universities, in their business schools, are offering a social enterprise stream, so we're starting to build up expertise in that area too. There are also new books coming out on this in terms of how to do impact investing, so it's growing.