I used to believe that my eyes worked by shooting out my sense of sight to the object, to 'see' it. Later learnt that it worked the other way round, and even later learnt that Plato shared my childhood belief, saying that rays of light shout out of the eyes to see objects.
A childhood belief about eyes

others believed things like this
- I used to beleive in stores that were open 24/7 , that the people that worked there worked 24/7 nonstop.Anon
- I used to belive that employees who worked at 24/7 shops lived there and never slept!(they worked 24/7)— tilly Waukesha WI
- I used to believe that CD's were made of glass, until I learnt otherwise.Anon
- I thought if someone worked full time it meant they worked 24/7 and never did anything else!— andalite
- i used to think when you sleep your eyes turened round to watch performances in your head— rasverone
- I used to believe that God was the light rays shining through the clouds.— Lynn