Methodological individualism, that today is about the only real key distinctive feature of economics with respect to other social sciences, is surely a very effective way of looking at society. On the other hand, a "mono methodological individualism view" can disregard the role of institutions in individual's actions and society: institutions surely are outcomes of individual's actions, but, once they exist, they undoubtedly influence individual actions -- a typical example is market. Market prices, for instance, are surely at the end determined by individual actions, but nobody can deny that real markets are something more than just "outcomes of action by individuals." All organization theory is about interplay between individuals outcomes (rules, norms, �) retroacting to individual actions. Luigino Bruni