Terence Tao briefly discusses this problem in the first chapter of his talk with Lex Fridman: Terence Tao: Hardest Problems in Mathematics, Physics & the Futur

Terence Tao briefly discusses this problem in the first chapter of his talk with Lex Fridman: Terence Tao: Hardest Problems in Mathematics, Physics & the Future of AI | Lex Fridman Podcast #472 https://www.youtube.com/watch?v=HUkBz-cdB-k https://www.youtube.com/watch?v=HUkBz-cdB-k