Mr. Keynes's Aggregates

"One of F. A. Hayek’s most accurate, and oft-repeated, lines about John Maynard Keynes comes from a review of Keynes’s 1930 book, A Treatise on Money.  Hayek wrote: “Mr. Keynes’ aggregates conceal the most fundamental mechanisms of change.”  That Austrian macroeconomics rests firmly on the microeconomic “mechanisms of change” that ultimately comprise economic activity remains a crucial reason why that insight can better explain both the mistakes of the boom and the way out of the bust."