✂️ FAIR WARNING: SPOILERS AHEAD ✂️

1. How exactly does tethering work?

Like, we get that the "souls were split" into two, but TECHNICALLY, SCIENTIFICALLY, how does that work?!
2. And how did the government clone people — like, were they taking DNA samples from hospitals or something?!

What's the process exactly?
3. Are they cloning children? Because Adelaide/Red's story said she gave birth to her "shadow" children in the underground.
4. Are the tethered "shadow" people actually human?

Like, are you telling us they ~grow~ human bodies in some wild underground lab? What are they made of?
5. When exactly did the government abandon their cloning/doppelgänger project?

Obviously, it was sometime between 1986 and present day, but when exactly?
6. And, speaking of which, when did they START it?!

Again, obviously before 1986, but how long before?
7. How come Jason, the son, was (seemingly) able to control his doppelgänger?
8. How are they making those fancy golden scissors (and handcuffs) in the underground?

Are there some sort of underground manufacturing facilities we don't know about/haven't seen yet?!
9. And, while we're at it, same question about the red jumpsuits...

Is there a tethered clothing depot we don't know about?
10. ...and fingerless gloves.

BTW, is the ONE single glove simply just a reference to Michael Jackson? We get it, girl grew up in the '80s, but is that it???
11. What exactly were the tethered people eating underground when they weren't feasting on raw rabbits?

Adelaide/Red said something about them being hungry most of the time, but they had to survive on some kind of nutrition...right????
12. What was it exactly about Adelaide/Red's dancing that made the tethered people know she was "different?"
13. Did little Adelaide/Red run UP that escalator to get up above ground?
14. Can the doppelgängers live forever?

Because, apparently, they don't die when they "untether" (i.e. kill) their above-ground counterparts!
15. Why was Jason looking at his mother suspiciously in the car near the end — did he overhear her conversation with her "shadow" self?

16. Who's in the helicopters at the end, and what's the plan?

Like, are the just news helicopters, or are they military ones, OR something else entirely?!
17. And finally, this isn't a big deal, but was Jason's mask ~supposed~ to be a Chewbacca mask?
Like, could they just not get the rights because of, ya know, Disney? LOL.