In most if not all college, students have to take certain social sciences/humanity courses, regardless their major. So, it's bound that students will have these liberals as their professors...
True enough. We used to take the Psychology electives because they were so easy and a joke. Rather than take exams, the professors would sit around on their desks with their legs crossed and their open palms resting on their thighs, asking everyone to "share their feelings."
It was a great contrast to the Navier-Stokes equations.