In his economic writings prior to World War I, Otto Neurath laid out a critique of economic theorizing, faulting it for its weaknesses and inconsistencies in concept formation and use of essential terminology. In this Neurath consciously echoed the criticisms voiced by Henri Poincaré about flaws in the construction of science in general. Later, the tension in Neurath’s own thinking became apparent between the coherence required to build systems and coordinate life activities and the necessarily incomplete nature of knowledge, with concomitant implications for economics.