" In the physics of fire, there is a chemical phenomenon known as a stoichiometric condition, in which a fire achieves the perfect burning ratio of oxygen to fuel—in other words, there is exactly enough air available for the fire to consume all of what it is burning. Such a ratio creates an ideal fire situation, which results in total, perfect combustion. A stoichiometric condition is almost impossible to create outside of a laboratory. It requires such an elusive, precise balance of fuel and fire and oxygen that, in a sense, it is more theoretical than actual. Many firefighters have never seen such a blaze and never will. "

― Susan Orlean , The Library Book