Knowledge Half-Life

The concept of knowledge half-life borrows from physics: just as radioactive material decays over time, organizational knowledge becomes less accessible the longer it goes undocumented. When a key team member leaves, changes roles, or simply moves on to new priorities, the knowledge they carried begins to fade from the organization.

The rate of decay depends on several factors. Highly specialized knowledge with few other holders decays fastest. Knowledge that is referenced frequently decays more slowly because it gets reinforced. And knowledge that is documented but stored in hard-to-find locations may technically exist but becomes functionally inaccessible, a form of decay in its own right.

Organizations can extend the half-life of their knowledge by capturing it close to the moment of creation, tagging it with relevant context (people, projects, decisions), and making it searchable through both keyword and semantic search. Reattend captures knowledge automatically as people work, and shows leaders which topics are held by only one person before that person leaves.