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ADM.15:3 - Forces
| Force | Tension |
| Decision relevance | Evidence should change a real choice without becoming a permanent collection burden. |
| Population | Completed cases are easy to observe, while excluded, abandoned and unfinished needs may reveal the decisive loss. |
| Several consequences | Speed, correctness, protection, effort and money can move in different directions. |
| Claim strength | A descriptive contrast can be useful while causal and population-wide claims need stronger support. |
| Authority | An observer can reveal a trade-off without having authority to relax a protected condition or change the service. |