Oh really?
"Specifically, energy (E) equals mass (m) times the square of the speed of light (c2), a prediction of Einstein's theory of special relativity.
Such tests are important because special relativity is a central principle of modern physics"
So you might be convinced that the equation wasn't known before ole Al came up with special relativity...and you'd be wrong.
You could also wonder if "how do we know these guys are right? Because they say so?" yeah, not good enough anymore.
BTW, "The work was supported by NIST and the National Science Foundation." Gotta keep the money coming in now don't we?
https://www.nist.gov/news-events/news/2005/12/einstein-was-right-again-experiments-confirm-e-mc2
Ed McQuarrie talks the REAL History of Stocks and Bond performance.
Worried About a Stock Market Crash? Here’s What You Should Be Worried About Instead. - Barron's https://share.google/zxmc1t7eE4TLrdHPh
Read this article from Barron's
https://www.morningstar.com/portfolios/when-it-comes-bonds-dont-be-hero
Interesting article on bond allocation, short term needs for retirement are better to be in a money market account up to two years of spending and up to ten years in a high quality active bond fund. Also active bonds have outperformed index bond funds by one percent