Analytic philosophy, that is to say, can very occasionally produce practically conclusive results of a negative kind. It can show in a few cases that just too much incoherence and inconsistency is involved in some position for any reasonable person to continue to hold it. But it can never establish the rational acceptability of any particular position in cases where each of the alternative rival positions available has sufficient range and scope and the adherents of each are willing to pay the price necessary to secure coherence and consistency.