Thinking carefully ...

... On Smiting One's Political Enemies. (Hat tip, Dave Lull.)

An argument can be objectively bad for a number of different reasons: it is logically invalid; rests on an empirically false premise; involves a weak analogy; commits an informal fallacy; is so murky and indistinct as to be insusceptible of evaluation, etc. The essence of the pluralistic position is that once all the bad arguments on both sides are set aside, one arrives at a set of 'good' arguments which, however, do not resolve the issue for an impartial observer.