This paper lays out a program for analysing relevance constructively. It begins with a summary of results concerning the system C of Pottinger [197a] which has entailment, relevant implication, S4 strict implication, and intuitionist implication among its connectives. A full working out of the motivation for C will require formal analysis of informal concepts derived from the usual explanation of the meanings of the constants of intuitionist propositional logic. Formal machinery which should be adequate for the proof theoretic side of (...) the analysis of the nonmodal part of C is described in detail, and the direction in which semantical results are to be sought is indicated. (shrink)

We summarize the evidence and arguments usually employed against the use of the profit maximization assumption in microeconomic theory, and then pass directly to the methodological arguments. Two arguments are considered. The first summarizes positions which have been taken by various defenders of the "people who think a theory should be given up just because it is false are naive and confused" view. To rebut this view, we develop a scheme for classifying theoretical assumptions and show that the specious plausibility (...) of the argument in question derives from ignoring the distinctions we have drawn. The second argument attempts to show that a better theory is more likely to be attained by continuing the development of the orthodox theory. We show that this view is mistaken and then discuss steps which have been taken to develop a better theory. (shrink)