Kengo Nutahara Senshu University; and The Canon Institute for Global Studies (CIGS)   Graduate School of Economics, University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan   nutti@isc.senshu-u.ac.jp   http://www.kengonutahara.com/           JEL Areas: E0 : Macroeconomics and Monetary Economics: General D5 : General Equilibrium and Disequilibrium: General