But perfection could be imposed by a wise creator or evolved by natural selection.
Perfection covers the tracks of past history.
Evolution lies exposed in the imperfections that record a history of descent. An engineer, starting from scratch, could design better limbs in each case. The fundamental problem with this argument is that it requires a super -human level of understanding. In that case, the only way to determine the suitability of each design would be to know all of the purposes for which it was created. An illustration may here prove useful.