I remember the first time I encountered barcode readers in a supermarket - I was about 8 and with an Aunt.
She had a trolley full of food and I couldn't understand how the checkout girl knew the prices and descriptions of everything as she took them off the conveyor.
It took me a LOT of years before I realised what was going on.
A childhood belief about going shopping

others believed things like this
- Mom couldn't understand why at dinner time I wanted Chicken Pox.— Kristin
- I thought i had to chew my food 27 times before i could swallow because Stephanie said it on Full HouseAnon
- i used to believe the news readers on TV could see us and i'd make funny faces to try to "distract" themAnon
- I used to believe hat the news readers could see into my living room so i sed to undress behind the couch.— henri
- I can remember thinking that is I hid my eyes, and couldn't see anybody that they couldn't see me.Anon
- I used to believe that cow udders were hollow bags full of milk.Yet I knew that human boobs were solidAnon