I beleived as a child that everything that moved had a wind up key and that it was just a matter of finding it. Some years later I began to think that they were only visible when you had your eyes closed and that if you looked for them really quick you might see them before they disappeared
A childhood belief about physics

others believed things like this
- I believed that wind was caused because the trees moved. I was completely sure my conclusion was correct.— Glenr
- I used to believe that when I closed my eyes, nobody could see me. — Jens
- I used to think if i closed my eyes noone could see meAnon
- My sister used to think that nobody could see her if she closed her eyes.— Dave
- I used to believe that when you closed you eyes you were invisible and no-one could see you!— Andrew
- I used to think that if I closed my eyes I would be invisible— invisible