A little rule I live by is that if Moritz Hardt writes it, I will read it

Why is that?

You honestly don't know of Moritz Hardt?

Why so snarky? I also didn't know who he was:

I'm a director at the Max Planck Institute for Intelligent Systems. Prior to joining the institute, I was Associate Professor for Electrical Engineering and Computer Sciences at the University of California, Berkeley. My research contributes to the scientific foundations of machine learning and algorithmic decision making with a focus on social questions.[0]

Also simply knowing of him doesn't answer the question.

[0] https://mrtz.org/

xkcd 1053, my friend.