For me it came from the material. It was so well written and brought the opportunity to work with great actors. And of course the opportunity to 'mince about' was an added element that I wanted to take advantage of!
“Although I insist that God has always had the power to intervene directly in nature to create new forms, I am willing to be per-suaded that He chose not to do so and instead employed secondary natural causes like random mutation and natural selection.”