Remembered my friend visiting a natural history museum last year. He was telling me about a display of stone tools from a dig in Africa. They had these patterned grooves cut into them, not for use but just for design. It made him stop and realize, like you mentioned @kevin_lee75 with the shells, that the urge to make things look nice is way older than we thought. He said it felt weird to picture someone taking that extra time, just for the sake of it, so long ago.

Sometimes you just get a bad batch of parts. Checking extra stuff every time can waste more hours than it saves.