R: "Amma what are those spiral steps for?"
Me: "Oh! That is the fire escape."
R: " What is that?"
Me: " That is how you are supposed to escape when there is a fire in the building"
R: " Oh! But why have they made spiral steps for that when you have to go fast? I can't go fast down those steps when I have to escape!"
I never thought about that even one time in all these 41 years! Have you?!
Architects are you listening??!