Of the fans much publicised concerns over the direction the Man Of Steel follow up is taking, Goyer is sympathetic but unmoved. "We're conscious of the fan point of view when we're working on these things," he explains, "but you can't let yourself be paralysed by that. At the end of the day you still have to create something, and if you try to think about what the fans would like, you stop being creative. It's sort of like, where does it end?"
It ends with likes of Spider-Man 3 (2007) and Terminator: Salvation (2009), so you can't help but feel that he's correct in his approach. "You have to write the story that you want to write," he says, "and hope that people want to see it."
Of course, the burning question is: who would win in a fight between Superman and Batman?
"Most comic book purists would say Batman," Goyer believes, "even though it makes no sense whatsoever! Batman is the ultimate strategist, but if Superman just flicked his finger Batman would be done for. But you'll have to watch the film in a year and a half, whenever it comes out, to see what happens..."
Batman Vs. Superman, or whatever it ends up being called, is scheduled for a crowded marketplace slot in summer 2015, with a US release date already set for 17 July that year.