  Functions or 'functionings' enable to give a structure to any activity and
their combinations constitute the capabilities which characterize economic
assets such as work utility. The basic law of supply and demand naturally
emerges from that structure while integrating this utility within frames of
reference in which conditions of growth and associated inflation are identified
in the exchange mechanisms. Growth sustainability is built step by step taking
into account functional and organizational requirements which are followed
through a project up to a product delivery with different levels of
externalities. Entering the market through that structure leads to designing
basic equations of its dynamics and to finding canonical solutions, or
particular equilibria, after specifying the notion of maturity introduced in
order to refine the basic model. This approach allows to tackle behavioral
foundations of Prospect Theory through a generalization of its probability
weighting function for rationality analyses which apply to Western, Educated,
Industrialized, Rich, and Democratic societies as well as to the poorest ones.
The nature of reality and well-being appears then as closely related to the
relative satisfaction reached on the market, as it can be conceived by an
agent, according to business cycles; this reality being the result of the
complementary systems that govern human mind as structured by rational
psychologists. The final concepts of growth integrate and extend the maturity
part of the behavioral model into virtuous or erroneous sustainability.
