I've noted previously disagreement with various aspects of Hayek's knowledge problem (Knowledge vs. Calculation) and other Hayekian terms (such as "spontaneous", see p. 68 of Knowledge, Calculation, Conflict, and Law)--terms that make my praxeological trigger finger itchy, so to speak. I've also long been skeptical of the Kirznerian idea of "entrepreneurial alertness"--entrepreneurs are not passive actors trying to be alert to profit opportunities; instead, they are active actors who make judgments with their property (see on this Hülsmann, Knowledge, Judgment, and the Use of Property and Salerno, Mises and Hayek Dehomogenized). (For discussio of related issues, see also Jeff Tucker's post Kirzner on Knowledge vs. Information.)
Peter Klein offers some more perceptive comments on this topic in his post Judgment versus Alertness on the Organizations and Markets blog (Klein also wrote one of my favorite Austrian articles, Economic Calculation and the Limits of Organization). Check it out.
