It all comes down if you believe in timing the market. I know that the best advice is to not time the market, and simply invest in the long term, riding throug

It all comes down if you believe in timing the market. I know that the best advice is to not time the market, and simply invest in the long term, riding through the market depressions. That being said, a couple of my friends managed to successfully time the market for 2000 and 2008. Basically, they remove their money more or less 8-10 years after the end of the last depression, and add it back in as soon as it looks like it is going to go up again. I believe it is more luck than skills though.