Marxism R and D animalism atomism behaviorism commonsense realism control control experiment controlled experiment cut and try dialectical materialism down-to-earthness earthiness earthliness empiricism epiphenomenalism experiment experimental design experimental method experimental proof experimentalism experimentation freedom from illusion functional design functional furniture functionalism hardheadedness historical materialism hit and miss hylomorphism hylotheism hylozoism lack of feelings materialism matter-of-factness mechanism natural realism naturalism new realism noble experiment physicalism physicism positive philosophy positivism practical-mindedness practicality practicalness pragmaticism rationality realism reasonableness representative realism research and development rule of thumb saneness scientism secularism sensibleness sober-mindedness substantialism temporality tentative method tentativeness testing trial trial and error trying unidealism unromanticalness unsentimentality utilitarianism worldliness