The two areas were people are given the most mis-information are nutrition and finance. I was recently listening to an expert on nutrition who espouses a view that is far different than the mainstream and he recommending people use the following formula in trying to find out what works for them:
Step 1---Try what everyone says should work
Step 2---If it doesn't work then throw it out
Step 3---Try the opposite
This advice carries over to finance as well. You tried the traditional asset allocation approach in 2002 and 2008, how did that work? If it didn't work well then toss it and try the opposite. The opposite of fixed allocations decided by your risk tolerance and age is to have flexible allocations determined by the market, or Tactical Asset Allocation.