Q: How many economists does it take to change a lightbulb?(according to different economists)

Economist 1: None. If it really needed changing, market forces

would have caused it to happen.

Economist 2: None. They're all waiting for the invisible hand

of the market to correct the lighting disequilibrium.

Economist 3: All. Because then you will generate more employment,

more production, more income, more consumption...

Economist 4: It depends on the wage rate...