How can I test results if I want to make changes to my portfolios? And other great questions

Paul discusses the latest Equity and Fixed Income Tables (1928-2021). Also, see updates of The Ultimate Buy & Hold Fine Tuning Your Asset Allocation, Fixed Contributions and No-Nonsense Tables. Plus, he answers the following questions: How can I determine expected risk and return of a portfolio that combines investments from several of your portfolios? Is there any benefit adding international large-cap fund to the U.S. 4 Fund Portfolio? Is the 60/40 portfolio dead? Should I add alternative investments to my portfolio? How do I track my results if I start my investment mid-year? Does it make sense to substitute your Vanguard Monthly Income Fund for your Government Bond fund recommendations? What are your rebalancing recommendations? Paul ends with a wonderful comment from a young investor about dealing with the temptation to check his results daily.