Which is why that over the long-term evolution selects for maximum degeneracy. An engineered machine is designed and built for one specific set of conditions and goals, and if either the conditions or goals change we start over with a new design. That’s not an option in evolution. There are always environmental changes, and it isn’t predictable what those changes will be. If the current solutions don’t also work for the new conditions, there isn’t a redesign but an extinction
Which is why what succeeds is degeneracy; systems that accomplish many different, good-enough solutions to the current conditions (both within and across individuals). That way when conditions inevitably change, some of the current good-enough solutions will also work in the new environment. Whenever people talk about evolution in terms of goals or trait-optimization they miss the point. The only universal good of evolution is survival through as many different ways as possible, because that promises that some of those ways will also lead to survival in whatever is to come
