Is justice individualistic or both individualistic andsocial? Opposite views on this question include von Hayek, who said that `social justice' was an oxymoron, and the late Holy Father who, in Sollicitudo Rei Socialis said that some socio-economic institutions can have`structures of sin' in...

Although it is not possible, in general, to give a macro description of a micro model over the entire state space of the micro model, it is possible to aggregate exactly over a subspace. The set of micro states where aggregation is possible forms the aggregation set. The paper considers the...

In explaining economic phenomena, economic analysis concentrates on selected influences and fixes the host of other factors under a ceteris paribus clause. This view, which goes back to Alfred Marshall (1842-1924), is developed in the first part of the book. Aggregation is viewed as a particular...