The following is well-written / well-stated:

>"Goals are for Games. Constraints are for Worlds.

A goal is a win condition. Constraints are the rules of the game. But not all games are worth playing. And some of the most powerful forms of progress emerge from people who stopped trying to win and started building new game boards entirely.

[...]

Richard Feynman didn’t get his Nobel Prize by pursuing "win a Nobel Prize" as a goal. He played with problems, often placing arbitrary limits on himself: what if we assume this system has no dissipation? What if we ignore spin?

He looked for elegance within boundaries, not outcomes.

His freedom came from self-imposed structure."