Three frameworks, one method Mendeleev 1869 Problem 60+ elements, no systematic theory Contribution Structure + commit to gaps as predictions. Taxonomy that predicts, not just classifies. Standard model Problem Why does the table have the structure it does? Contribution Fermion vs boson: matter vs force. Taxonomy is demanded by deeper physics. OSI model 1984 Problem Network complexity: where do boundaries go? Contribution Layer boundaries from dependency relations, not convention. Period is derived, not assigned. ASM applies all three