I knew I read it from Levitt somewhere. For better or worse, most of my knowledg...

		alanctgardner2 on Dec 10, 2012 \| parent \| context \| favorite \| on: Startup ideas spreadsheet I knew I read it from Levitt somewhere. For better or worse, most of my knowledge of economics derives from his blog and books. Of course, he describes it better than I did.