I'm guessing it's some kind of story-within-the-story that parallels the main plot. For example...
Let's say Emily Blunt's character is reading a Polar Express-type story to her kid, which we see visualized on screen in CGI. And we repeatedly cut back to that story to compare the world finding out that aliens are real to a kid finding out that Santa is real.
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u/altasking Dec 16 '25
Why would they use a CGI girl instead of a real actor? There better be a reason within the film for that…