Knowledge that Transforms

tN a recent paper, John Maurice Clark pleaded for greater communicability between mathematical economists and others: 2 the results obtained by mathematical economists would be far more useful if they became part of the common equipment of economists general; the general economist should have these results put for him in a form that makes it possible for him to appraise their significance. Professor Clark advocates, as it were, translating from one language into another to establish communication. Professors Crum and Schumpeter give an alternative: to learn the foreign language, or at least its rudiments. In I938, Professor Crum published Rudimentary Mathematics for Economists and Statisticians as a supplement to the Quarterly Journal of Economics. In the preface, the author remarked: