Advertising And The Economic Stimulus Package

I'm no economist. I can barely make change for a twenty.But I have some questions about the "stimulus package" being hammered out in Washington.It starts with Seth Godin. Seth wrote a very interesting post a few weeks ago, which I commented on recently. The post was called "Do Ads Work?" It made a very thought-provoking point.If advertising works i.e., if it returns more money than it costs, why