We always want some comforting master plan and big picture. But there is no master plan, ever, about anything, and the big picture is a photograph of the master plan.
Things that work, I think, are discovered & found in process and end up FEELING like a grand design when finished.
Yeah, kinda like how “Casablanca” has an ending that feels inevitable, a perfect summation of the film’s theming and narrative, and actually it was a late rewrite deep into production after other endings were written but fell flat.
“And still the Weaver plies his loom,
whose warp and woof is wretched Man
Weaving th' unpattern'd dark design,
so dark we doubt it owns a plan”
-- Sir Richard Francis Burton, in the "Kasidah of Haji Abdu El-Yezdi" (1880)