So Helix is OK if they don't call it Helix? A rose by any other name . . . or, rather, BS by any other name would stink just as much. I figured that this was just the Helix process only they needed to figure out something to get around that pesky incompatibility business that kept them from doubling Sydney in the first place! (And wasn't the "incompatibility" thing just a story excuse as to why they had to double Francie instead of Sydney? Now they want Sydney to be doubled, so that little problem goes away.) I still don't like this for the very same reasons that I didn't like Helix . . .
How do they get around developmental differences? Twins don't have duplicate fingerprints.
How do they duplicate environmental factors like scars, grafts, implants, etc? Even radiation exposure?
What about mitochondrial DNA and non-nuclear (cytological) factors? Not everything is determined by your chromosomes.
How could they duplicate brainwaves & brain morphology to the cellular/molecular level without erasing your memory or changing your personality?
Yeah, yeah, I know we're in sci fi territory here, but I want something that I can sorta kinda buy just a little tiny bit. This is just "Swallow this crock for the sake of the story or forget it." Eh, can't you meet me halfway? This is just ridiculous.
ETA: and there's nothing weird about your weird idea, Spy Dude. They needed a way to resolve the whole prophecy thing, so hey-presto, doubling to the rescue. The sister thing really didn't work out, so maybe doubling is better. It seems to be the cure-all for any story problem, doesn't it? :lol: