Tubes in today's world is filled with harmony and polarization phenomenon, but still people are eager to build a better future, enable people to realize self-management, and supporting the social institutions really serve the people. Because economists understand earnings as actual material wealth increase, accounting experts think the output value of more than the difference between the input value is profits, there is a contradiction and two kinds of income concept. The specific performance is: A car that has been modified to transport specialized goods. Economist lynde hull explained that the benefits of capital in different periods of time would be interest. According to linde hull, interest in a specific period and the difference between the expected consumption is savings (during the period of the growth of capital), and returns the sum of consumption and savings are given period of time.