Earlier quoted context omitted.
> A central bank has to conduct montary policy for the economy as a hole. Attempts by central banks to 'clamp down' on bubbles have generally been catastrophic. Which is why Central Banks don't make sense as independent arms of Government. Bubbles are very very dangerous (as we all discovered in 2007/8) but they cannot be fought with interest rates alone. It takes a combination of government regulation, legal reform…
Bubbles are not by themselfs a problem. The property bubble in the US started collapsing in 2006 and by itself had no impact on employment or GDP. Just as after the great depression when everybody believed overspeculation on the stock market had been the problem. Economist have studied this for 70 years and the practically universal conclusion was that montary policy errors was the real problem. In Australia montary…
There's a direct line from Bear through AIG and Lehmans to the wider economy. Everyone was over-leveraged and GDP growth was predicated on the understanding that other people would keep on spending more. With house prices tanking that fantasy collapsed and everyone immediately started re-trenching. Cue recession. Any bubble large enough will always trigger a recession.
The government did everything it could to lessen the impact (sadly pretty much guaranteeing the next bubble will happen sooner and be larger in the process) but a recession was inevitable because people couldn't keep on spending money they din't have.
The Great Depression wouldn't have been as bad if economic stimulation had been applied earlier (although it may well turn out to have ended sooner, thanks to better targeted stimulation) but it couldn't have been avoided with better monetary policy. The boom relied on stocks continuing to climb exponentially. It was a ponzi scheme. And it burst.
Ultimately Central Bank policy is failing now because it doesn't have enough levers to restore balance to the economy. What lift we got in 2009 was from the automatic counter-cyclical kick of government spending that has largely petered out.
ps I didn't provide any story for 1926-29 boom so I have no idea what you're talking about there. You appear to be projecting.