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Fridman is a rabbit hole, you'll find detractors and defenders and slanderers.

The debate has already been had so i'll just link it

https://news.ycombinator.com/item?id=32348302

https://en.wikipedia.org/wiki/Lex_Fridman

Lex Fridman is a Russian-American computer scientist, podcaster, and writer. He is an artificial intelligence researcher at the Massachusetts Institute of Technology, and hosts the Lex Fridman Podcast, a podcast and YouTube series.

Lex Fridman has also done original research on robotics and computer vision detection of facial expressions. Here is one of his papers; there are several others on related areas.

https://ieeexplore.ieee.org/abstract/document/8751968/

That's an inadequate description