When i was a child, i believed autopilot really worked like in the movie Airplane, that it was an inflatable dummy.
That all television, even live action, was just made by someone who could draw really fast.
I actually had similar theories though in the end I concluded that a person definitely couldn’t be doing it, but I did used to rack my brains how the machine did it so fast. I had to do a project on how TV worked and was invented when I was in the 6th grade and it didn’t help at all, the whole electron gun thing didn’t explain it to me at all because I was imagining the gun like, drawing objects like trees and buildings and people and none of the boring confusing stuff I read helped me understand how this gun knew what to draw and could do it so quickly.