The neoclassical fallacy gained popularity in the 1950s, during which decade Samuelson revised Economics three times. Meanwhile, Penrose derived the logic of organizational learning that she lays out in TGF from the facts of firm growth, absorbing what was known in the 1950s about the large corporations that had come to dominate the U.S. economy. Also, during that decade, the knowledge base on the growth of firms on which economists could subsequently draw was undergoing an intellectual revolution, led by the business historian, Alfred D. Chandler, Jr. He was engaged in the first stage of a career that would span more than a half century, during which Chandler documented and analyzed the centrality to U.S economic development of what he would come to call “the managerial revolution in American business.”

In combination, the works of Penrose and Chandler form intellectual foundations for my own work on the Theory of Innovative Enterprise—an endeavor that has enabled me, as an economist, to recognize not only the profound importance of organizational learning for economic theory but also the illogic of the neoclassical theory of the firm for our understanding of the central institution of a modern economy, the business corporation. In this essay, I argue that the key characteristic of the innovative enterprise is fixed-cost investment in the productive capabilities of the company’s employees to engage in organizational learning. The purpose of this investment in organizational learning is to develop a higher-quality product than was previously available. When successful, the development of the higher-quality product enables the firm to capture a large extent of the market, transforming high fixed cost into low unit cost. The result is sustainable competitive advantage that enables the growth of the firm, contributing to the growth of the economy as a whole.

I argue that to get beyond the neoclassical fallacy, economists have to stop relying on constrained-optimization methodology. Rather, they need to be trained in a “historical transformation” methodology that integrates history and theory. It is a methodology in which theory serves as both a distillation of what we have learned from the study of history and a guide to what we need to learn about reality as the “present as history” unfolds.

Lazonick, William, Is the Most Unproductive Firm the Foundation of the Most Efficient Economy? Penrosian Learning Confronts the Neoclassical Fallacy (January 26, 2020). Institute for New Economic Thinking Working Paper Series No. 111. Available at SSRN: or