For me, it may be that the toilet paper roll needs to have the open end away from the wall. I don’t want to reach under the roll to take a piece! That’s ludicrous!
That or my recent addiction to correcting people when they use “less” when they should use “fewer”
Canon is important to science fiction and comic book adaptations because the rules of those universes operate so wildly different from our own that it is important to put more work in keeping things consistent.