I grew up with tons of sci-fi playing all the time on our TV so I was very familiar with the idea of alternate dimensions. At one point I convinced myself that I was constantly travelling through dimensions and any time I was wrong about something, it wasn't that I was wrong, it was that I was now in a dimension that was different from the one I had been in earlier.
A childhood belief about i'm different

others believed things like this
- I used to think that if someone looked familiar to me then I must also look familiar to them.— Preston
- Hasn't everyone, at some point or another, believed that pickles grew on trees? I sure did.— Matt c.
- I used to believe that on your birthday everybody would worship you! (I guess I was wrong).— supergirl
- I used to think you could go to jail just by saying a word wrong during a speech.Anon
- I used to think I smelled wrong, but I figured out it was because we never used dryer sheets. — blnkfrnk
- i used to believe that stars really were star shaped, i realised at the age of 34 how wrong i was.Anon