----------------- HES POSTING ----------------- I am not sure that ALL 'this stuff about equilibrium is from physics and engineering'. I think a good case can be made for suggesting that the relevant scientific paradigm of 'equilibrium' for economics is biological, not mechanical. From a mathematical standpoint our discipline is a special case of ecology. Anthony Waterman ------------ FOOTER TO HES POSTING ------------ For information, send the message "info HES" to [log in to unmask]