As soon as you go into any biological process in any real detail, you discover it's open-ended in terms of what needs to be found out about it.
“I travel the world, and I'm happy to say that America is still the great melting pot - maybe a chunky stew rather than a melting pot at this point, but you know what I mean.”
“Scripture suggests that the elements in space were created for the benefit of earth, while evolution suggests that earth is an insignificant speck in vast space.”