A passage through science: Crossing disciplinary boundaries

A METHODOLOGY IS PRESENTED FOR CREATING pathways through the scientific lit erature following-strong co-citation links. A specific path is described st arting in economics and ending in astrophysics traversing 331 documents. Sp ecial attention is given to where the path crosses disciplinary boundaries and how analogy can be used to model the thought: processes involved in suc h transitions. Implications of information pathways for retrieval, the unit y of science, discovery, epistemology, and evaluation are discussed.