Up until about 14 years old, I never believed that a knife totally cut anything in half. I always thought there was a tiny sliver that got pushed down directly under the blade that was so small it was not visible to the human eye.
A childhood belief about physics

others believed things like this
- For years and years I believed that tuna must be really little fish because they came in such small cans!!— Gisela
- I believed that if you pushed your belly button, your bum would fall off.— Wendy
- i believed that little men sat in the back of vending machines and pushed the sweets forward.— rachael
- as a kid, i was told by my older cousins that i wasnt human until i turned 7 years old.— twk
- I used to believe that the visible rays of the sun were beaming people up to heaven. like in star trek.Anon
- when I was 6 years old i use to believe a catfish was half cat one fish.Anon