A Chain Complex explanation of Why are Fire-Engines are Red.
Another example using chain complexes is the logic behind the concept of why Fire Engines are red.
Fire Engines are red because they originally had four wheels and eight men on them. Four plus eight is twelve. Twelve inches is a ruler, and a ruler was Queen Elizabeth.
Queen Elizabeth was an ocean liner, which sailed the seven seas. Seas have fish and fish have fins; and the Finns were fighting the Russians (known at the beginning of the Century as the Reds), and Fire Engines are always “rush’en” here and there to fires, so they need to be red! You may detect some inadequacies in this logic.
But, enough of history, which is complex enough. On the next page is an example a complex concept, which was actually developed by a young person.