Why historians should resist claims that history or knowledge has ended

A reflection on civilizations rising and collapsing leads to a rejection of any final endpoint for history or knowledge. Current scientific understanding is only the best level of correctness presently available and may later be revised. The rapid change of the previous 150 to 200 years makes it risky to impose today's limits on what the next two centuries could produce. Historians and scientists should leave room for new evidence and futures outside current assumptions.