Excuse me if I'm mistaken, but you seem to assume that the assembly plant is already maximally optimized and that only the human labor could be improved by AI. That would discount the potential effect of AI on re-engineering plant with unorthodox insights or through comprehensive fast simulations that haven't been feasible before. Then there's any new engineering techniques it may arrive at, new materials, the scope it will bring to robotics etc etc
So basically, you're suggesting AI will replace or have a significant impact on the industrial engineers whose job is to promote efficiency?
That's expecting a lot from something that still struggles to count letters in words or take orders at a fast food drive thru.
> something that still struggles to count letters in words or take orders at a fast food drive thru.
You're expecting quite a bit more if you think that here in 2025 we're at the end state of AI development.