We are not inferring design to account for a black box, but to account for an open box.
Michael BeheFor example, both humans and chimps have a broken copy of a gene that in other mammals helps make vitamin C. ... It's hard to imagine how there could be stronger evidence for common ancestry of chimps and humans. ... Despite some remaining puzzles, there's no reason to doubt that Darwin had this point right, that all creatures on earth are biological relatives.
Michael BeheThe basic structure of proteins is quite simple: they are formed by hooking together in a chain discrete subunits called amino acids.
Michael BeheI believe the evidence strongly supports common descent. But the root question remains unanswered: What has caused complex systems to form?
Michael Behe