FDR ran on a platform of putting people to work, and he did. Those people didn't starve and contributed to the non-government economy as they spent the money they earned. That is not a matter of opinion. Also, at a time when people were working for almost nothing, families were being split up because children couldn't be fed, and people were dying of exposure in tent cities, I find it hard to believe that our world would have been better off had wages fallen an additional 25%. However, that is exactly what the authors are advocating.