THE TECHNOLOGY OF ANALOGICAL MODELS - FISHER,IRVING MONETARY WORLDS

Mary Hesse's well-known work on models and analogies gives models a cr eative role to play in science, which rests on developing certain anal ogical properties considered neutral between the two fields. Case stud y material from Irving Fisher's work (The Purchasing Power of Money, 1 911), in which he used analogies to construct models of monetary relat ions and the monetary system, highlights certain omissions in Hesse's account, The analysis points to the importance of taking account of th e negative properties in the analogies and to certain differences betw een ''ready-made'' analogies (models of systems based on existing anal ogical structures) and ''designed'' analogies (models built up from se parate analogical features).