For me it is the reverse. My best creative time is the sauna, followed by the shower, and lying in bed in third position. Pen and paper work great for fleshing out stuff, but not for the original insights. Once we get to the keyboard and screen that is the implementation of ideas already formed elsewhere.

This is not a straight cascade, but different phases influencing each other. I also want to point out that its not a value statement. All phases have their own merit, and all of them pose their own challenges.

At least for me, doing without any of them will grind creative productivity to a halt.