power of prediction

In 2003 Alan Greenspan who was Chairman of the federal reserve said "The notion of a bubble bursting and the whole price level coming down seems to me as far as a national nationwide phenomenon, is really quite unlikely,"

In 2005 HDRKID say "The real estate market will fall like a house of cards".

What happened -- price of houses fell over 50%. The drop cause banks to fail and US to go into a severe recession, soon a depression.