it's something Ridley Scott says at the end of this 9min interview with Los Angeles Times reporter Geoff Boucher for the debut episode of Hero Complex: The Show. He talks about storyboarding, the Alien prequel Prometheus and the thematic motivations behind a potential Blade Runner prequel.
"It's about 'going back' to why someone would want to build Replicants i.e. robots who look like people.
"A new life awaits you in the off-world colonies, a chance to Begin Again."