This has been making rounds among econobloggers. Didn't know that Dogbert was the economist in this strip.
But then his parody of making bad business assumptions here, here, and here are hilarious. Terrific reminder for making business plans, and in general any kind of forecasting.
ASIDE on the oil thing, Dilbert could have argued thus with Dogbert -
Dilbert: "But if enough of us buy fuel-efficient cars then that might overall help reduce the price of oil, which could ultimately squeezes oil revenues for whichever states that sponsor terrorism."
Dogbert:"If, might, could, and whichever."