The permanity of time makes movement spatially oriented. Direction is spiritual content rather than the real content, because space motion direction is to form a certain period of time, make the starting position spirit record after compared with the current reality location to determine the current spatial direction. In contrast, spatial orientation is a reality because it has nothing to do with the time period.
In the face of market failure, coase has given the opposite answer: external-utility problems can be solved by explicitly using the market, without government intervention. And zhang wuchang is more absolute, he said that there is no so-called external utility, there is only unclear property rights. Anyway, coase brought revolutionary innovation to market concepts. He made it clear that the key to the market was not the "price mechanism" of impersonal machinery, but the power of participants in economic activity (property rights)
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