You can't see the curvature of the earth from an airplane.
Why do I care? Because it's fun taking what is considered "common sense" and utterly destroying it. It can get people to think outside the box, maybe for the first time in their lives.
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