BSG Producer David Eick told
Science Fiction.com: "It was always developed, at least from my point of view, as a project for an online environment and it was something we would develop and structurally, narratively build as a 10 part serial. Kind of like the ‘Raiders of the Ark’ style adapted the 1930’s style movie serials where you have 10 minutes of story and a cliffhanger followed by 10 minutes of story and a cliffhanger and after 10 of these episodes it would resolve itself and react structure as a whole movie. So when I set out to develop this, my thinking was to design a mission, sort of speak, of course once the characters and the overall ideas were approved by the network, a mission that could be, as missions are often are in the military sense, divided into 10 smaller missions."
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via)