Such a fact that even the evolutionists can't agree how it occurs.
"Dr. Eldredge, along with Stephen Jay Gould of Harvard, formulated a theory challenging Darwin's premise that evolution occurs gradually. Their theory, known as Punctuated Equilibria, asserts that evolution occurs in dramatic spurts interspersed with long periods of stasis."
Ed McQuarrie talks the REAL History of Stocks and Bond performance.
https://www.morningstar.com/funds/vanguard-wellesley-income-is-top-choice
Could be a great fund to start with starting in retirement and cash. Or use Vanguard Wellington and cash if you want to be more aggresive
https://www.morningstar.com/economy/what-weve-learned-150-years-stock-market-crashes
Take a look at this what has happend in past in stock market