In this episode, Małgorzata Mazurek (Columbia University) engages in a discussion with Thục Linh Nguyễn Vũ (RECET) on how Michał Kalecki and Ludwik Landau, Polish economists in the interwar period, responded to local and global challenges such as poverty and the Great Depression. Embedded in the Second Polish Republic — a fragile political entity — the economists in question generated innovative ideas about mass employment and economic development.   Małgorzata Mazurek is an associate Professor in Polish Studies in the History Department at Columbia University. Her interests include the history of social sciences, international development, the social history of labor and consumption in twentieth-century Poland, and Polish-Jewish studies. She published Society in Waiting Lines: On Experiences of Shortages in Postwar Poland (Warsaw, 2010), which deals with the history of social inequalities under state socialism. Her current book project, Economics of Hereness, revises the history of developmental thinking from the perspective of interwar Poland and its problem of multi-ethnicity. She has recently written about the idea of full employment in interwar Poland for the American Historical Review, history of social sciences for a survey handbook, The Interwar World, and the university as the Second-Third World Space in the Cold War for the volume Socialist Internationalism and the Gritty Politics of the Particular edited by Kristin Roth-Ey.