For non-economists, it is often difficult to understand why economists place so much emphasis on the self-interest motive. It is obvious that people act out of a variety of motives - gratitude, anger, social obligation and many, many other motives. There are several reasons why economists still...

The nature of learning processes as well as evolutionary considerations suggest that aesthetic judgement is of central importance in the formation of custom. Learning and extrapolation rely on evaluations of non-instrumental features like simplicity, analogy, straightforwardness, and clarity....

The new institutional economics has one of its roots in evolutionary thinking. The idea is that there is competition among organizational forms. Some forms spread faster than others and thereby displace and eventually destroy the less well adapted forms. In the end, the most 'efficient'...