Prof. Dr. George Soklis is an Assistant Professor in Economic Theory and Policy of Input-Output Analysis at Panteion University, Greece, and Adjunct Assistant Professor at the Hellenic Open University, Greece. His main educational and research interests are political economy, input-output analysis, and tourism economics. He has published papers in Annals of Tourism Research, Cambridge Journal of Economics, Contributions to Political Economy, Evolutionary and Institutional Economics Review, Metroeconomica, and Tourism Economics, among others; various other papers have appeared in Centre of Planning and Economic Research (KEPE) publications; and he is coauthor of the book Spectral Theory of Value and Actual Economies: Controllability, Effective Demand, and Cycles, Springer Singapore 2021. Prof. Dr. George Soklis holds a degree in public economics, an MA in economics of production and intersectoral relations, and a Ph.D. in economics from Panteion University of Social and Political Sciences, Greece.