KarlShelliswithoutadoubtoneofthecentralplayersinthedevelopmentofeconomictheoryandmacroeconomicsinthelatterpartofthetwentiethcentury.Hehasmadeimportantcontributionsontopicsrangingfromgrowththeory,tooverlappinggenerations,toextrinsicuncertainty,tomonetaryeconomics,tomar-ketgames,andt