In two recent blog posts (here and here), Simon Wren-Lewis wrote sensibly about microfoundations. Though triggered by Wren-Lewis’s posts, the following comments are not intended as criticisms of him, though I think he does give microfoundations (as they are now understood) too much credit. Rather, my criticism is aimed at the way microfoundations have come to be used to restrict the kind of macroeconomic explanations and models that are up for consideration among working macroeconomists. I have written about microfoundations before on this blog (here and here) and some, if not most, of what I am going to say may be repetitive, but obviously the misconceptions associated with what Wren-Lewis calls the “microfoundations project” are not going to be dispelled by a couple of blog posts, so a little repetitiveness may not be such a bad thing. Jim Buchanan liked to quote the following passage from…
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Utopia, you are standing in it! 
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