The problem with fiction involving worlds of your own design, people of your own making, and implications outside the realm of possibility – is you can fall down your own rabbit hole.
You start seeing connections to other media.
You start wondering if you are replicating existing worlds.
You start thinking about alternate dimensions, everything you’ve ever read, movies that you’ve watched.
You start to wonder how much of it is your own, and you simply hope for the best.
It’s hard, in a millennia of writings, minds, movies, communications, to disperse the original thoughts among the learned ones.
The other difficulty – is sometimes you start believing it. And when you start believing it, you start seeing it everywhere.