Marx was very intelligent, but so was Adam Smith. William F. Buckley was very intelligent, but so was Gore Vidal. There are many, many topics where increasing

Marx was very intelligent, but so was Adam Smith. William F. Buckley was very intelligent, but so was Gore Vidal. There are many, many topics where increasing intelligence does not mean increasing convergence of conclusions. The further away you get from hard science, the easier it is to diverge... building (intelligently) upon incorrect and hard-to-falsify foundations.