"How is this a perfect design in the image and likeness of a perfect God - or was this the result of the evolution of a skeleton system made for walking on four legs that is somewhat less than perfect for bipedal locomotion ?"
"I think you can forget about God the super `` engineer `` on this one : your final question contains a necessary and sufficient condition to explain the case ."
"the evolution of a skeleton system made for walking on four legs"
"your final question contains a necessary and sufficient condition"