From John Hussman:
Galbraith reminds us that the 1929 market crash did not have observable catalysts. Rather, his description is very much in line with the view that the market crashed first, and the underlying economic strains emerged later: “the crash did not come – as some have suggested – because the market suddenly became aware that a serious depression was in the offing. A depression, serious or otherwise, could not be foreseen when the market fell. There is still the possibility that the downturn in the indexes frightened the speculators, led them to unload their stocks, and so punctured a bubble that had in any case to be punctured one day. This is more plausible. “Some people who were watching the indexes may have been persuaded by this intelligence to sell, and others may have been encouraged to follow. This is not very important, for it is in the nature of a speculative boom that almost anything can collapse it. Any serious shock to confidence can cause sales by those speculators who have always hoped to get out before the final collapse, but after all possible gains from rising prices have been reaped. Their pessimism will infect those simpler souls who had thought the market might go up forever but who now will change their minds and sell. Soon there will be margin calls, and still others will be forced to sell. So the bubble breaks.”
Just food for thought for when the machine makes you feel oh so comfortable.