In a free society, therefore, it will simply never be the case that every occupation is evenly balanced, politically, and it will generally be the case that professors lean left, especially in the humanities and social sciences. This is not a problem as long as there are enough professors who don’t lean left to guarantee institutionalized disconfirmation in any field that addresses politicized topics. A left-to-right ratio of two or three to one should be enough to sustain institutionalized disconfirmation. And that’s about what the ratio was for most of the twentieth century.
