According to Krugman, war (be it with Germans and Japanese or space aliens) is a great thing (even though he admits it gives us "negative product social spending") because it both gives us more employment AND inflation! I mean, what's not to like? You can have prices rise and have empty store shelves -- but you have a job, even if you can't buy anything, as was the case in WWII.
As for Krugman's "alien threat" comments, Bob Higgs has it right. On a recent Facebook post, Robert Higgs has written:
Professor Krugman, I can be even more Keynesian than thou. My plan: invite aliens to bring to earth the blueprints for a global debt-financed public-works program in which every nation would construct thousands of pyramids (constrained only by the condition that public debt not exceed infinity and policy makers' IQ not exceed 63.)Higgs makes more sense. Really. Mary Theroux of the Independent Institute agrees, and has this to say:
As Dr. Robert Higgs has more than ably shown, the Great Depression continued, and deepened, throughout the New Deal and throughout World War II. The World War II years were a time of shared privation, with virtually every item that we take for granted today either rationed: e.g., meat, gasoline, sugar, clothing; or not available at any cost: e.g., new cars, appliances, etc. The American standard of living throughout World War II remained at an excruciatingly low level that no 21st century American would accept. Meanwhile, unemployment disappeared simply because 16 million able-bodied people were sent to war, paid below-market rates and subject to danger, death, and maiming they may not have preferred to unemployment.To be honest, I think that we will be better with space aliens running things than the Keynesians.