Problems in the public domain have never been questions of science or statistics, but of subjective cognition, consciousness, and imagination. In the social sphere, the subjective feelings of the people are the most important objective facts. Therefore, When discussing public policy issues, the seemingly accurate figures are actually not as important as officials and experts imagine. On the contrary, if the people of a country feel their tax burden is heavy, then the tax burden of that country is heavy Regardless of how low the macro tax burden calculated by experts compared to other countries. What does this text tell us? ['Sometimes the scientific formulation of public policy requires us to stay away from data analysis.', "The student's tax burden in a country depends on the subjective feelings of citizens in the country.", 'We have a biased understanding of some public domain issues.', "References to citizens' perceptions are more important than data when solving problems in the public domain."]