1] This is not true. What graphs are you looking at?
Weekly year over year growth of 15% in MZM is 'normal' to you?!?!
2] There was no fundamental change in business...you mean the productivity myth perpetuated by Greenie? the reason why people were buying was because as he himself put it:
"Once stock prices reach the point at which it is hard to value them by any logical methodology, stocks will be bought as they were in the late 1920s - not for investment, but to be unloaded at a still higher price. The ensuing break could be disastrous because panic psychology cannot be summarily altered or reversed by easy-money policies." [Alan Greenspan]
And also because he created the Greenspan Put. Remember that?
3] Greenie fought tooth and nail against the principle of regulation and oversight (although not accounting...in his case it was derivatives). The devastating result was LTCM and similar blow ups.
4] See Alan Greenspan's quote above. Also remember that he talked incessantly about the 'productivity miracle' that made stock price values normal. As well, he quoted the expectation of analysts to 'prove' that stocks and the economy would be fine. Remember that?
And finally, Greenspan could have killed 'momentum' investing or atleast slowed it down by pushing up margin rates (one of the three mechanisms at his disposal). But he didn't. His public excuse for not doing it by the way is assenine and the minute I heard it, I knew he was lying through his teeth.
"We do have the possibility of raising major concerns by increasing margin requirements. I guarantee that if you want to get rid of the bubble, whatever it is, that will do it." Alan Greenspan 1996
5] Alan Greenspan is only good at one thing: self preservation. He is especially astute at reading political winds (maybe he should have given Pitt a primer). One glaring example is when he suddenly switched his belief (held during Clinton's years) that reducing taxes was not good, when Bush came to office. He is one slippery and slimy bugger. How do you think he got where he is and kept himself there?!?!
6] That is what he is SUPPOSED to do!! darkhorse said it before and I'll say it again, central bankers are supposed to be hated, despised...that's how you know they are doing their jobs.