Pak Romy Cahyadi explained that social impact refers to both the scalability and reach of the business model. Scalability  depends on the business model characteristics, such as the necessary know-how for providing a service and how certain stakeholders can block the scaling of the social enterprise. Reach is the percentage of the market covered by the concept. The social entrepreneur should be prepared to speak in depth about the external and internal factors that will facilitate (or might limit) the enterprise  and increase its scale and impact. Performance measurement enables the social investor to control and monitor  the work of the social entrepreneur. Performance measurements include both financial and social indicators.