I disagree, not with liberals arts majors not being aliens part, but this being the same as talking to someone from any technical profession you don't know about. In my experience, the thinking process thought and praised in liberals arts fields is in some respects quite different from that in any technical field, as to sometimes be a real impediment in communication.

One example from a topic I worked on: author attribution using stylometry. To a CS (or EE or whatever) the thought that you can take a corpus composed of writings from various authors and train classifiers to differentiate the unique styles of each would be mundane. To some English majors, such a strong structuralist approach would border on sacrilegious (remember Prof. Keating's reaction to such an approach to judge poetry in Dead Port's Society). Each approach has something to be said for it but it has to be done delicately, otherwise polite discussion becomes impossible.