When I was around 9 or 10 years old I would go on trips from my small village to a nearby city with my family.
While there I would notice that many faces I would see looked somewhat like people I knew back in the village.
I used to have this fantasy--that I more than half believed--that the world I lived in was some kind of enormous experiment around me. So this bunch of people followed me around, disguising themselves so as to appear as different people.
Think of the 1998 movie "The Truman Show".
Quite an ego-centered fantasy...
A childhood belief about i'm different

you weren't the only one
57 of you believed this