"At one point, Warren Buffett didn’t know what free cash flow was"
Eames Lounge Chair by Herman Miller
About ten years ago, Ice Cube did a great short video (and cool poster) about the Eameses to promote a local event in LA. Note it was produced by Chiat/Day, Apple's ad agency - I recall that they sometimes produce these kind of things for free for local non-profits. You might enjoy it :)
Your point about WB not knowing what FCF is so simple yet profound. Love it.
Re: your eating patterns, I recently undertook to quit caffeine. Along the way I came across an app called My Circadian Clock after watching this video: https://youtu.be/erBJuxVR7IE
His basic point is to align eating with our natural clocks. It's interesting, I've now quit coffee, sugar, wheat, and dairy. I feel way better. We'll see if I can keep it up.