like Napalm said, it would ve random and the changes that helped eventually became permanent.
is it a perfect arguement? hell no cause we don't know enough but its the best arguement we have. and what points to any type of God? nothing. you can say its so complex there must've been a creater, but what proof do you use to back up your claim? nothing except your feelings and belief. you say there is a creater without offering proof, while we say evolution and can offer thousands of years of proof.