See for example: http://economix.blogs.nytimes.com/2008/10/29/bang-for-your-stimulus-buck/ http://economix.blogs.nytimes.com/2008/10/29/bang-for-your-s... The

See for example: http://economix.blogs.nytimes.com/2008/10/29/bang-for-your-stimulus-buck/ http://economix.blogs.nytimes.com/2008/10/29/bang-for-your-s... There are quite a few papers on the subject. Anyone with any knowledge of economics is familiar with the idea, and people without any knowledge of economics ought not to pretend that they do.