Cal talks about flow in the book.
Sam Spurlin

Maybe I should clarify: Pink’s point is that the opportunity to achieve those 3 aspects needs to be present, which it sounds like is aligned with what you’re arguing. You don’t need to be a master, you just need an opportunity to achieve mastery. I would be interested in learning how Cal sees Deep Work as a vehicle to aid in discovering purpose, however. From personal experience, that’s something that is tricky to discover.