Comment by jcgrillo

I'm sorry but both of these are false equivalences. CNC isn't about making general machining operations faster or necessarily better. It's about making a single machine more versatile. Instead of needing an assembly line of machines you can get a bunch of different operations done on the same part without moving it to a different machine. You can also do compound operations that were otherwise highly specialized (like milling a turbocharger's radial compressor wheel). You can get the same job done with a series of manual operations though.

A garden hose vs a bucket is also the same situation. You can accomplish the same thing with either, but one might be more labor intensive.

AI is nothing like either of those. It would be like instead of a bucket you get a garden hose that points in a different direction every time you try to use it. Or instead of a 5 axis mill that rigorously executes the g-code it just randomly reinterprets tool paths each time it cuts a part. Both of these things would be worse than useless in their respective applications.

AI is different because it plays to the pliability of the software domain. Even fairly shitty, irreproducible results can be good enough for software development, if you don't look at it too closely. Make analogies to the physical world at your peril!