At the risk (no pun intended) of extending this discussion well 
beyond its natural life, the topic was thoroughly examined (if not 
always accurately portrayed) throughout the late 80s and early 
90s.  Notably absent from this discussion here is the important work 
of Tony Lawson, especially "The Relative/Absolute Nature of Knowledge 
and Economic Analysis" (EJ, Dec.1987), and "Probability and 
Uncertainty in Economic Analysis" (JPKE, Fall 1988), and Jochen 
Runde, especially "Keynesian Uncertainty and the Weight of Arguments" 
(Economics and Philosophy, 1990).  Also there is Ch.22 in The Elgar 
Companion to Economics and Philosophy, ed by Davis, Marciano, and 
Runde.  I mentioned earlier the Schmidt volume, from a conference in 
Paris in 1993!  Without intending to prolong it further, I hasten to 
add that Keynes repudiated nothing!!!  Any response to the last would 
perhaps best be handled off-line.

Charles McCann