> Experience allows you to design the skeleton where the implementation details are often inconsequential.

Expanding on this thought a little more: it is possible to set up scaffolding that make incorrect implementations inconsequential. If the LLM can detect when the implementation is wrong, it can retry with the errors feeding back into the loop. This is shored up by up-front investments in tests, API definitions, strong types, linting rules, etc. the various cheap, fast Flash models do not need to 1-shot solutions if capable of autonomous reiteration.