Most of the time, people consider stuff like architecture and engineering to be "serious", and social sciences to be "fluff". There are equations that describe what forces act on a roof truss, or what the electricity does within a given type of circuit. But human behavior, individually or in groups, is not as amenable to scientific, mathematical analysis - which is why the social sciences are considered "soft" sciences, as opposed to "hard" ones like physics and mechanics and even chemistry.
But I agree with cmcmck; all knowledge is useful in some way, and knowing more than one's opponents is often a great advantage. Besides which, being curious is a good thing, and satisfying one's curiosity is always a rewarding experience.
no subject
But I agree with