Originally Posted by statdoc

No, he means something called "dollar cost averaging", which is essentially the concept of putting the money in regardless of what the market is doing, with the knowledge that generally, the market will go up over the years. Eventually, the lows and the highs tend to even out, with the highs winning out. If you ignore the fluctuations, and just continue to buy (invest in mutuals, etc), your money will generally grow.