Although I do agree with ya 95% of the time....
That's not good advice...how is someone going to get the premonition, Magic 8 Ball or remote viewing to know when their fund will tank??!? Even Bob Brinker's Markettimer wouldn't claim to tell exactly when to dump. Heck, I have even done as you said twice before, during the NASDAQ dump in 2000, and the March 2008 slide, but I'd never claim that I know for certain when someone else should make a huge portfolio move.
Using MMM's link above, one can find the 10 year compounded return on the TSP's rock solid G Fund was 4.62% . Not losing money is another form of making money. At least that's what Warren Buffett had to say about it.
As Marissm said, there is no risk-free investment. As Spekkio illustrated, if you're making 4.0% interest during 4.0% inflation, then you're breaking even. My ONLY point is do NOT fall in love with your investments. When I shift, when you shift, when Marissm shifts investments is the interesting part.
Using the DJIA as an example, take a look at 2000-2004.
http://www.google.com/finance/historical?cid=983582&startdate=Jan+1%2C+2000&enddate=Jul+6%2C+2004When did I shift money, when did you shift money, when did Marissm shift money? If we all had shifted from the riskier small capital funds in 2000-2001 era...maybe at a predetermined "drop" in the DJIA after one quarter of data, and then shift back when we thought we hit "rock bottom" (circa 2003), then 2004 was a pretty good year.
What happened here? Everyone fell in love with their high tech/Internet investments.
Same with the next dip. If you called it around July 4th, 2008, and then shifted back at the "valley", then you would have minimized your loss and maximized (17%) your gains in 2009-2010.
http://www.google.com/finance/historical?cid=983582&startdate=Jan+1%2C+2008&enddate=Jul+6%2C+2010What happened here? Well, a mess that continues to be debated daily in the GM: PolySci section. I'm not going there. :-)
"Buy Low, Sell High" isn't bad advice...it's how the game is played! However, I think we can all agree that in the end it feels like you're in Las Vegas as you try to predict the peaks and valleys. I know some people that waited until the DJIA was headlines news (i.e., record lows) to shift their money. Then, they checked their 401K every day and wrung their hands. Finally, when the market recovered, they put their money back. That is backwards...Sell Low, Buy High?
That's also what happened to real estate in 2005 to date. How many Navy sailors bought in 2005 and took a huge loss when the detailer said they HAD to transfer in 3 years? I think the bubble was obvious (and I rented at the time). Prices are likely to return to what they have for 100 years, an overall modest increase:
http://mysite.verizon.net/vzeqrguz/housingbubble/So, I don't think there's a right and wrong here...although I'm disappointed I'm 5% over towards your bad side. <grin> These paragraphs are very easy to write...in hindsight. But what about 2010 to 2015? Great question. There are different investment strategies though as you illustrate a very conservative one, which is not bad advice at all.
In any event, I wish the Navy did a better job of educating young sailors before putting $50K in their hands. I think we can all agree that a 2010 sports car is NOT an investment! :-) In fact, a graph showing the loss you take during an average deployment (not using the car, making high payments) would be educational.