1Cademy represents topics (micro-topics) as nodes in a shared knowledge graph, each labeled with a type. A micro-topic gives one topic its own explanation, whether it is a concept, a complete theory or a conclusion combining other topics. A prerequisite link from one node to another means the first should be learned before the second; it shows learning order, not evidence that either node’s content is correct. A learning pathway is a sequence of prerequisite links: a reader can trace backward from an unfamiliar topic to topics they already know, then learn forward. Members can propose new nodes and revisions to content or links, with discussion, voting and past versions recorded.