Key concept 3: In the term of social value can be construed notion of the residual value created in the course of a market transaction that turns out to be the key to understanding the role of entrepreneurship. This key concept, residual value can be divided into two principles: financial and nonfinancial residual value. Financial residual value is consumer surplus and producer surplus that occurred by market transection. Nonfinancial residual values are reputational and ethical. For example Muhammad Yunas, John D. Rockefeller, Bill Gates, or Steve Jobs Personal reputation—like a brand for a corporation—is a valuable privately held asset.