TY Wheylous.
Actually Krugman answered that one himself, as I mentioned in the blog [all bold font is just copied from the blog]:
He knows the answer to this one, and indeed spells it out in the next paragraph:
The best that von Hayek or Schumpeter could come up with was the vague suggestion that unemployment was a frictional problem created as the economy transferred workers from a bloated investment goods sector back to the production of consumer goods.
Of course, it’s not vague in the least.
Put another way,
Austrians say that a boom and bust cycle always begins by new money being pumped into the economy…
When the investment sector gets some of that new money, no money has been taken away from the consumer sector. The consumer sector keeps what money it has, so it doesn’t have to fire anyone. The investment sector then uses its new money to lure away workers from the consumer sector with Help Wanted ads. That’s why there is a boom, with no one getting fired. People just move from one job right into the next one.
The bust happens when, for reasons Austrian Economics explains, the investment sector wastes the new money on losing propositions. AE explains why this is inevitable…
…when the investors realize they have blown the money and there is no profit to be made in what they are doing, the firings start.
…When the time comes for the bust, the money has been wasted. There is no more money.
And thus no money for a boom in anything, neither investment nor consumer goods.
Bottom line, the unemployment side and the lack of a boom are two sides of the same coin. The reason there is unemployment is the same reason there is no boom, in fact one could argue that they are jsut two aspects of the same thing, a bust. Both are because money and resources have been frittered away, so of course how can you expect a boom in anything?