this refers to normal, traditional investing, not through retirement accounts. you should really only invest in a traditional investment account if you have:

  1. maxed out your roth ira contributions
  2. maxed out for 401k contributions
  3. have 4-5 months of expenses saved up

Using The Swensen Portfolio Strategy for Real Financial Growth

Summary of the article

Weighting Components Class
50% Total Stock Market Stock
15% International Stock Market Stock
5% Emerging Markets Stock
10% TIPS Bond
10% U.S. Treasuries Bond
10% REITs Real Estate