Back when I was a Firefighter, we had a house fire call. Upon arrival the second floor was well involved. After we put the fire out, we interviewed the homeowner. He stated that in the closet where the fire started, it had a pull chain cord connected light. It was wrapped around a nail. In his words "It had been sparkin for weeks every time you turned the light on" The closet was filled with his teenage girls gowns. (he tried to put it out with a cooking pot before he called us. He was a lawyer. Real smart!