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OCE.17:3 - Forces
| Force | Tension |
| Recognizable practice | Shared names help people find one another, while changed names and tools can conceal continuity or difference. |
| Evidence at working scale | One real case can reveal a useful gap, while one case cannot represent a whole profession. |
| Transmission and opportunity | Good explanation matters, while access, permission, time and suitable work determine whether it can be attempted. |
| Recognition and participation | Peer judgement can sustain useful distinctions, while prestige, compulsory participation and rewards for appearances can suppress them. |
| Continuity and renewal | Retaining a useful variant saves effort, while preserving a harmful or obsolete one defeats the purpose. |