Easily explainable by evolution but not real intelligent design.

Mechanical Engineer - "God is obviously a Mechanical Engineer of great talent. Just look how the various limbs and joints fit together and function!"
Electrical Engineer - "No, God is obviously an Electrical Engineer. Look at the wonderful wiring of the nervous system and brain. Mechanical engineers could never do that."
Civil Engineer - "You're both wrong, God is obviously a Civil Engineer".
ME and EE - "Huh? How so?"
CE - "Who else but a Civil Engineer would run a waste disposal pipeline right through the middle of a great recreational area?"