I thought that the automatic flusher on urinals and toilets was controlled by someone who sits behind the wall watching us through the sensor and flushed them for us
Why would you think such a thing?
I'm just trying to find ways to entertain my mind
It's okay to imagine how things work about stuff you don't know about. Learning more about them will make you a better person and your imagine a more creative person.
Don't worry, I know how they work. I was just being silly.
Well, you must have thought this one day before you found out. It is kind of weird you thought this but now that you know you can share your knowledge with someone else who might think the same way.