Originally Posted by Llama_Shepherd
Yes on day one, read Action Comics #9. One of the best single issues of Superman ever, and it deals in a world where Superman isn't real, per se, and is just an idea, a character or as he is referred to in story "made up messiah". It also deals with what happens when people who only want to make a mass appeal version of the character, and create a brand over anything else and how it pollutes the essence of him.
Guess what, the movie was made for a GA, and the GA ultimately determines whether or not it is successful. No, Superman should not be able to do ANYTHING on his first day, that's just stupid and kills any sort of tension going forward. Also, the whole "he's a messiah who can do anything" is the very reason why many people have trouble relating to him. There's is ZERO tension with your character if you can instantly say "he'll find a way, he can do anything."