A REASON TO LOVE “CASH FOR CLUNKERS:” “It is a fabulous demonstration project for just how utterly pointless government stimulus programs can be. Stimulus programs tend to be hard to evaluate in our complex economy — sort of like trying to calculate the effect of a butterfly flapping its wings on world climate. But since cash for clunkers only lasted a few weeks and hit only one industry, we can learn a lot about the effectiveness of government stimulus.”