As this crisis point approaches, the central bank has a choice: either to accelerate the expansion of the money supply in order to try to help businesses pay for the increasing prices and wages they are faced with and delay the recession, or to refrain from doing so at the risk of allowing some businesses to fail, asset prices to fall, and disinflation (and possibly a recession or depression) to occur. The crack-up boom occurs when the central bank chooses and sticks with the first option.