Since Hayek was radically scornful of human reason, he could not, like John Locke or the Scholastics, elaborate a libertarian system of personal and property rights based on the insights of human reason into natural law. Nor could he, like Mises, emphasize man's rational insight into the vital importance of laissez-faire for the flourishing and even survival of the human race, or of foregoing any coercive intervention into the vast and interdependent network of the free market economy.
Instead, Hayek had to fall back on the importance of blindly obeying whatever social rules happened to have "evolved," and his only feeble argument against intervention was that the government was even more irrational and was even more ignorant, than individuals in the market economy.