The Productivity Standard-not the Realistic Application of Practical Standard

This paper has proposed a opinion that the theory of productivity standard is the application of practical standard should be consulted. The productivity standard is different to practical standard. The former is about the historical viewpoint and the latter is about epistemology. There exists basic difference between the two in nature, content, and object to be inspected. The practical standard and productivity standard are not simple the relation of theory or individual theory. They reflect the consistency of impersonality and value of facts. The productivity standard is under the political guideline of the Party to correct the mistakes and realize the liberty after the "Cultural Revolution".