man, I can't tell you how interesting this was.
https://harvardforest1.fas.harvard.edu/publications/pdfs/Raup_ForestHistory_1966.pdf
Ed McQuarrie talks the REAL History of Stocks and Bond performance.
https://www.morningstar.com/funds/what-doubters-get-wrong-about-6040-portfolio
What the 60 percent stock portfolio and the 40 percent bond portfolio helps your portfolio