It's the same old story: Girl Meets Boy, Girl Looses Boy, Girl travels through time and meets herself, and Boy again, only it's not quite the same Boy, and… er, try again: It's the same old story: You're trying to change the world, but it's trying to change you, too, and it wins, and it's you that's changed and not the world, only you're part of the world so it's different, too, and watch the sexes of the Professor and Doctor because something fishy is going on there… er, take three: It's as easy as ABC: A is for Beginnings, B is for Fallback Options, C is for Average. Things are changing, and it's hard to find love and make the world better when standing on shifting sands. Same old story, right? "Paradigm Shift: Paradigm Slippage: Paradigm Boogie-Woogie" is the second story in the second movement of the Retcon series (the eleventh overall). It builds upon the earlier stories, but is also an independent novella that can be read and enjoyed on its own.