Yeah, except there are large amounts of code that could stand being faster, but it is not worth the cost to hand-optimize. So what are they good at? Optimizing

Yeah, except there are large amounts of code that could stand being faster, but it is not worth the cost to hand-optimize. So what are they good at? Optimizing large amounts of code well enough at a negligible cost. In other words, scaling productivity. The thing machines usually are good at :)