How has the story of fire changed from time to time?

Early man was ignorant about the existence of fire. He ate raw flesh, vegetables and fruits. Fire was invented in the Stone Age by rubbing two stones with each other. Since then man started cooking, boiling and roasting on fire. The people worshipped fire as deity. Those days lightning and volcanoes produced fire and frightened man. The destructive nature of fire caused awe and fear in the human heart. In the advanced ages of science, fire is known as the result of a chemical reaction. It occurs at the fuel’s flash point. The combination of oxygen, carbon and hydrogen with the fuel results in the release of energy (heat). Heat and light is known as fire. It is a good servant of man.