When I was a kid I believed that there were two parts to the world, existing side by side - Eden and the part that God created, and the rest of the world, which came about by evolution. Only in a child's mind could those beliefs exist together! (I no longer believe in evolution.)
A childhood belief about places

others believed things like this
- i used to believe that everyone had a twin on the other side of the world.— tahnee
- I used to think that there is another world on the other side of the mirror, where everyone is named Philip.Anon
- When I was a child, I used to believe that Catalonia was the unique part of land of the world.Anon
- I used to believe in super heroes exist in the world— Kakaroto
- I used to believe that if I chewed on one side of my mouth too much the other side would get jealous.Anon
- Until a few years ago, I believed this was a "doggy dog" world, rather than a "dog-eat-dog" world.— jemima