How do you know? If the door is closed, you can't see if the light is on or off.
So I've decided to start a religion based on faith in the door light being off when the door is closed, but on when the door is open.
In case that doesn't work out, I'm starting another religion based on belief the light stays on when the door is closed, and a third religion stating the condition of the light with the door closed is unknowable, and another religion based on....
I was about eight, and curious how things worked, so I looked.
I found a switch that turns the light off when you close the door, a simple mechanical device. It was very easy for an eight year old to understand exactly what it does and how it works.
Boo! No mystery! No wild, weird fantasies needed here. No mystical philosophy fits in here. The light just goes off when you close the door, that's all. This is no fun. Where's the magic? Where's the mystery? Where are the dancing girls?