Success stories like Harrison's are few and far between for social entrepreneurs, defined as «someone who targets an unfortunate but stable
equilibrium that causes the neglect, marginalization, or suffering
of a segment
of humanity; who brings to bear on this situation his or her inspiration, direct action, creativity, courage, and fortitude; and who aims for and ultimately affects the
establishment of a new stable
equilibrium that secures permanent benefit for the targeted group and society at large,» by Roger L. Martin and Sally Osberg in a 2007 Stanford University report titled «Social Entrepreneurship: The Case for Definition.»