| Reuse | A repertoire should save future search, while a universal catalogue accumulates irrelevant and stale entries. |
| Breadth | Important alternatives may sit outside Method Engineering literature, while undirected collection becomes a bibliography. |
| Stable reference | Exact identities and editions aid replay, while practices and descriptions continue to change. |
| Lineage | Provenance explains where a contribution came from, while ancestry is easily overread as causation, quality, or family membership. |
| Honest incompleteness | Missing positions should remain visible, while teams are tempted to fill them with plausible names or inferred relations. |
| Local comparison | A temporary grouping can make a decision tractable, while its label can be mistaken for a world-side family. |