Three points are made in this article. First, it is argued that general equilibrium theory should not be limited to the issues of existence and stability. A third subject-matter should be put on the agenda, namely the organization of trade. Tatonnement should be seen as the specific assumption...

In this paper I ponder upon the meaning of the perfect information assumption, and argue that a distinction should be drawn between the Walrasian and Marshallian conceptions of perfect information. I show that the Marshallian conception is more demanding than the Walrasian, due to the absence of...