You are saying that if human nature were only different, then leftist policies would work. You cannot make human nature disappear by declaring it "illegal." This is what the left doesn't comprehend. Policies work when they are in tandem with human nature, harnessing that human drive for betterment of self and family. Dr. Sowell understands reality; you prefer to deny reality. You may be correct that the right loses the argument, but not because they're wrong. It's because there are more and more people divorced from reality. They don't know enough or don't think enough to realize that liberal policies are not suited to human, but to ants.