Samuelson kept optimization-based problems separated from macroeconomic dynamics in his Foundations, where dynamics were defined in terms of difference and differential equations. Despite some criticism of his "correspondence principle" of stability analysis by D.F. Gordon, D. Patinkin and...

The paper investigates Evsey's Domar's introduction of the rate of growth as a variable in economics in the 1940s and 1950s . Domar investigated the nature of what he called the "moving equilibrium" of ec onomic processes with infinite duration. Reactions to Domar' s approach at the time brought...