chapter  3
Some reflections on the theory of investment planning and economic growth
Pages 17

The economist Wicksteed once said that mathematical modes of statement served to 'precipitate the assumptions held in solution in the verbiage of our ordinary disquisitions'. What is less commonly recognised is that this virtue may have to be purchased at the price of a quite serious defect: namely that the more formalised is a theory, the more likely is it that corollaries derived from it will be vulnerable because of some implicit assumption concealed behind the formal structure rather than from logical flaws which are more easily detectable.