When I was in 6th grade I told a classmate that if reflections and shadows didn't exist that we would fall through the floor. And he believed me!
A childhood belief about physics

others believed things like this
- I used to believe the shadows on the moon were actually spacemen casting shadows on the ground.— Perry
- I didn't want to get tall when I was younger because I believed that I would fall over. — Gabi
- I believed catbunnies did exist just like we have mules etc until I was like 14Anon
- I believed money didnt exist and you could just get anything you wanted.— Mr Money
- I used to believe that realistic looking toys could actually see. But only the shadows of things.— Micah Dunlap
- When I was little, I used to believe I could fly from my bed but I didn"t ....I fell on the floor!Anon