Original sentence: Evolutionary economics does not take the characteristics of either the objects of choice or of the decision-maker as fixed.It purports to challenge the mainstream of the economic discipline in a similar manner to how Charles Darwin challenged previous views of human genealogy with evolutionary theory.Mainstream economic reasoning begins with the definition of scarcity, then assumes the existence of a "rational agent" bent solely on the attainment of one goal — the maximization of her/his welfare as defined by that agent
Edited sentence: Conventional economic reasoning begins with the definition of scarcity, then assumes the existence of a "rational agent" bent solely on the attainment of one goal — the maximization of her/his welfare as defined by that agent.Evolutionary economics derives from a more modern tradition of inquiry, which does not take the characteristics of either the objects of choice or of the decision-maker as fixed.It challenges the Newtonian worldview in economics in the similar manner, as it was challenged by Darwinian evolutionary theory in biology and by studies of self-organization in physics