I really don't know anything about the economics of the Great Depression, but the opinion of two extremely outspoken economists does not (at all) serve as conclusive evidence of the failure of Roosevelt's policies.

I'll go ahead and link you to the only thing I've ever read on the subject, just to provide another opinion: http://www.tnr.com/booksarts/story.html?id=82c53220-7594-4ec...