Useful

Derek Sivers : Art is useless, and so am I https://sive.rs/useless

Elon Musk’s message to young entrepreneurs, CEOs, and startups: "Try to be as useful as possible. I think if you aspire to do true work, your probability of success is much higher. Do whatever it takes to succeed. Smash your ego, be humble. It's a super big deal." https://x.com/cb_doge/status/1986304840067391661

Elon Musk : On how to choose what to work on. Usefulness optimization https://x.com/0xmitsurii/status/1972617761781387634