Sometimes you don't need fancy graphs and complex equation to prove an economic fact.  Especially given the anti-intellectual, anti-fact ideology of modern supply-siders, maybe the evidence would be better presented in a simple, easy-to-read, idiot's guide to economic policy.  Fortunately cartoonist Steve Greenberg has come up with a good primer.

Via crooksandliars.com:

So, clearly tax cuts are not the solution for all of the world's problems.