cal analogy, in the work of Leon Walras, Vilfredo Pareto, Irving Fisher, and Francis Y. Edgeworth (to name a few of the more important figures). In Walras' equilibrium each subsystem (firm or household) deterministically maximizes profit or utility facing uniform prices "cried out" by an "auctioneer':

arently without raising questions about the non-statistical conception of the equilibrium systems Fisher was studying. Francis Edgeworth distrusted Walras' conception of the auctioneer enough to propose an abstract combinatorial model of exchange, based on the idea of recontracting among coalitions of

a study of such a Classical, infinite-horizon, production-based model before Arrow and Debreu used the same tools (mostly topological) to formalize Walras. [Foley 1990] The idea that production rather than exchange is the source of value is contentious within mainstream economics, though why this is

iom in his Outline of 1836. The biological imperative lapsed from attention when the first generation of marginalists, led by Jevons and Menger, with Walras soon to follow, thought it unscientific to explain or justify tastes. It reemerged a century later in bioeconomics, much of which looked for economic