ABSTRACT
The neoclassical model defined 'reality' and 'truth' as working propositions for the neoclassical theory group, as civil servants, lawyers, scientists and ordinary people establish their own ideas of what they will regard as reality, in accordance with their purpose. The efforts made to extend the model, or qualify it, with an 'economics of information' fail to reconcile the information issues with the model. The requirement is for a theory that takes account in its foundations of the role of information, including the manipulation of information. The assimilation has been made easier by the methodological similarity of behavioural theory to that of neoclassical theory. Psychologists have provided poor material for the adaptation of mainstream economic theory to a more realistic foundation in human psychology. While neoclassical markets tend towards equilibrium, money-bargaining systems evolve. The information interface is an essential concept since it is only information that can be processed by human minds.
