Despite its uselessness, squishy relativism remains a force in some sectors of society. It's dangerous because it makes people feel that they shouldn't evaluate anything. Dr. Bob explains the inherent contradictions. A quote:
I find it interesting that most every argument rejecting absolutes contains within its very language and structure, not to mention its premises, a framework of absolute assertions. And our subject does not disappoint: tossing around terms like “wise” and “fools” and “shame” and “credit”, qualitative words without meaning when there is no transcendent standard against which to measure them. What is shame if not the humiliation of rejecting an absolute good? Who is wise, and who a fool, if there is no standard of enduring and unchangeable wisdom by which to categorize one thusly? The lines of their straightedge are random and irregularly spaced — if there are measuring lines at all — yet they carefully measure and mark off “progress”, confident they have measured accurately. There is, of course, the inevitable rejoinder to all such foolishness which asks, “Are you absolutely sure there are no absolutes?” But beyond this childish rebuttal — childish, not in the sense of silliness or immaturity, but rather of unvarnished simplicity — there lies an even more evident and profound incoherence which can be discerned — from which a not-so-evident proposition emerges from the heart of anti-absolutism.
Read the whole thing.