There are many scientific methods for understanding human socio-economic actions, but interestingly, ‘the main flaw of traditional epistemology is its neglect of human action’, which is why Mises criticized traditional epistemologists from isolating thoughts from other forms of human activity. The author is deeply impressed by this criticism, as a review of many studies on intellectual property issues in the legal field reveals that they indeed often detach logical inquiry from the substantive content of thought, and the results eventually lack of logics.