Damon Linker has an excellent article up on “common sense”, and the ridiculousness of the right-wing appeals to it. It’s long, difficult to excerpt concisely, and excellent. Go read it.
That Americans disagree with one another on political and cultural matters is not an indication that those on one side or the other are out of touch with common sense. On the contrary, it is a consequence of our freedom?our freedom to disagree, to think for ourselves and to stake out political and ideological positions consonant with our divergent histories and experiences of the world, as well as with the differing natural tendencies and capacities of our minds. As an attempt to gain electoral advantage by demagogically short-circuiting open-ended public debate among equal citizens, the appeal to common sense deserves to be repudiated by all intellectually honest participants in American politics.