Is it strange that I thought traffic lights were controlled by a person inside the electrical box when I was young?
No that is interesting, What made you think there was a person in the electrical box controlling the lights?
I didn't know at the time.
It's fine to have an active imagination when you're younger. You're still trying to learn at that age.
I still don't know what the power of electricity is.
It's okay that you don't know about electricity too much. However, you can change that by taking time to gain more knowledge about it. Learning new information will help you to be more aware of the world.