How does knowledge grow? Sometimes it begins with one insight and grows into many branches; other times it grows as a complex and interconnected network. Infographics expert Manuel Lima explores the thousand-year history of mapping data -- from languages to dynasties -- using trees and networks of information. It's a fascinating history of visualizations, and a look into humanity's urge to map what we know.

A visual history of human knowledge

Humanity once used tree diagrams to bring order to everything from morality to genealogy, reflecting a deep desire for hierarchy and symmetry. Today, those trees are giving way to intricate networks that capture the true complexity of our world, as seen in the 10,000 neurons and 30 million connections mapped by the Blue Brain Project. This network metaphor is now reshaping not just science, but art and culture, offering a richer language for mapping knowledge, relationships, and even ecosystems. As challenges grow more complex, seeing the world as a web of connections proves vital for understanding and solving them.

From Tree Diagrams To Networks, Knowledge Finds New Shape

*The Book of Trees: Visualizing Branches of Knowledge*

Gallery: Gorgeous networks help us understand the world