Even CNN is admitting that this is "the worst economic crisis of our lifetimes", but stock prices have just kept going higher and higher until this week.  Several months ago the Federal Reserve decided to do whatever it took to rescue the financial markets, and their exceedingly reckless behavior fueled a speculative boom that is unlike anything that we have ever seen before.  But now it appears that the boom may be ending.  The Dow Jones Industrial Average was down 807 points on Thursday, and it appears that Friday could be another very challenging day for Wall Street.  It is well documented that many of the greatest stock market crashes in history have happened in the fall, and many investors may be trying to bail out before this latest bubble bursts in spectacular fashion.