Just two index funds like the Vanguard Total Stock Market and Total International Stock Index provide effective, economical, tax efficient global equity diversification.

FORBES: Dealing With A Crummy 401(k) Plan

These would include: an investor cannot pick the return but can only choose the level of risk, One cannot accurately predict the market, Diversification lowers risk, Invest to be on the Efficient Frontier and low cost investments can improve performance vs. high costs.

FORBES: A Hot Investment Recommendation