The difference i guess is that humans are capable of learning and producing better code as they become more expert at it.

The big tech companies are surely trying to improve AI with these “harnesses” as you call them, and you can try vibe coding them yourself.

But it seems to me like spending a lot of time adding features to a technology to try to catch edge cases, but the edge cases will never end, and you’ll never be able to use it for anything except rough approximations or bullshit