When I was about five I had (and still have, though I don't use it as much anymore) a Magic School Bus dinosaur game. In it the bus was a time machine and could travel to the age of the dinosaurs. It convinced me that I could build a time machine if I put a timer in a cardboard box and it would work if it was thrown into the air and it would fly to the time of the dinosaurs. So every day I would find the kitchen timer and sit in the box with it and begged my parents to throw me into the sky so I could go back in time but they kept telling me I couldn't but I kept believing I could. Eventually I was able to annoy everyone with this time machine stuff and my mom threatened to take away the Magic School Bus CD. I gave up when my parents finally explained thoroughly why it wasn't possible.
A childhood belief about technology

others believed things like this
- I used to believe my bedroom closet was actually a time machine.— Carrie
- When I was 6 I used to believe my parents were watching me at school on TV. It explained a lot at the time!— opinionata
- i used to believe i could go back in time so i could see dinosaurs.Anon
- i used to believe that our ansering machine was the washing machine and that it could talk
— tamara - When I got my feet measured by the electronic machine, I thought that the machine will squash my feet!— Helen
- i thought an ATM machine was something which gave free money!!— Armani