If you have trouble imagining a 20% loss in the stock market, you shouldn't be in stocks.
John C. BogleThe fund scandals shined the spotlight on the fact that mutual fund managers were putting their interests ahead of the fund shareholders who trusted them, which had much more substantial consequences in the form of excessive fees and the promotion - as the market moved into the stratosphere - of technology funds and new economy funds which were soon to collapse.
John C. Bogle