The UDC divides all human knowledge into ten main "houses" (classes), numbered 0 to 9:
In the late 19th century, two Belgian visionaries, and Henri La Fontaine , looked at the world’s exploding volume of information and saw a looming "Pit of Despair"—a future where human knowledge would be lost simply because it couldn't be found. universal decimal classification
To make this work, they needed a classification system that was: The UDC divides all human knowledge into ten
Using numbers that any person, regardless of language, could understand. two Belgian visionaries
Their quest to catalog every piece of human thought led to the creation of the , a system built on the bones of the Dewey Decimal Classification but designed for far more than just books. The Vision: The Mundaneum