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Writing the script: The trailers reveals an interesting take on the Superman story. Rather than adapt an existing storyline, Singer chose to write a draft of an original story. With his previous writers from X2, Dan Harris and Michael Dougherty, Singer created a script that tied into Superman and Superman II. His first draft included the character of General Zod, whom he wanted to be played by Jude Law, his first and only choice for the role. When Law turned down the part three times, Singer eliminated the character from the script. The most difficult challenge, he admits, was finding the obstacle that would be impossible for Superman to overcome: the passage of time and change. According to Singer, Lois' son Jason is a permanent reminder of this.
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