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OCE.13:3 - Forces
| Force | Tension |
| Decision timing | An answer is needed while change is still possible, but some consequences emerge only later. |
| Comparability | A shared basis permits useful contrast, while the work, population and measurement can change. |
| Breadth and effort | Relevant transferred burdens must be found, while observing every possible consequence would stop useful work. |
| Attribution | A decision may need a causal claim, while descriptive evidence is often the available and sufficient first result. |
| Affected participants | People can expose hidden consequences, while evidence use must respect privacy, protection and the cost of contributing it. |