My older brother told me when I was 3 or 4 that the reason ships float is because they are so light. In fact, they are so light I could lift an ocean liner with my little finger. I figured out the truth by the time I became an adult.
A childhood belief about physics

others believed things like this
- I used to belive if someone liftes you up, and you lift them at the same time, you will float in the air.— D'Anthony
- I used to think that on day light savings time you had to stay up till 2:00am to change the clocks! — Sandy
- Until I was 8 I used to think that women who wore eye liner were witches. — Will
- I used to believe there was a newsreader inside the radio where the light was!!— Christine
- Whenever I went to bed, I use to believe that when i flicked my light on and off I would signal aliens. — Laura.
- I used to believe that God was the light rays shining through the clouds.— Lynn