We're talking about biological evolution here. There's no design process, except by chance and fitness. Even some traits that might be better for an animal may

We're talking about biological evolution here. There's no design process, except by chance and fitness. Even some traits that might be better for an animal may not make it -- there's a whole chance and probably thing there. There is a paper where some researchers look at biological processes vs computer software. Biological processes seem to have a lot of repetition between systems: http://www.pnas.org/content/107/20/9186.full http://www.pnas.org/content/107/20/9186.full