We look upon economic theory as a sequence of conceptual models that seek to express in simplified form different aspects of an always more complicat… - Tjalling Koopmans

One can in particular interpret the proposition as a statement conditions under which the simplicity of incentive structure and the economies of information handling characteristic of a competitive market organization can be secured without loss of efficiency of allocation... The price system carries to each producer, resource holder, or consumer a summary of information about the production possibilities, resource availabilities and preferences of all other decision makers. Under the conditions postulated, this summary is all that is needed to keep all decision makers reconciled with a Pareto optimal state once it has been established.

If evolutionary selection is the basis for a belief in profit maximization, 'then we should postulate that basis itself and not the profit maximization which it implies in certain circumstances.

One is led to conclude that economics as a scientific discipline is still somewhat hanging in the air.