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SYSE.4:3 - Forces
| Force | Tension |
|---|
| Early challenge and sufficient warrant | A cheap early check can expose a bad claim, while consequential reliance may require several independent evidence lines. |
| Models and physical evidence | Models and simulations can explore inaccessible conditions, while their applicability, error, uncertainty, and extrapolation limit what they warrant. |
| Automation and claim scope | Automated checks provide frequent feedback, while automation does not enlarge the claim, configuration, or decision they address. |
| Component result and outside effect | A component can meet its technical criterion while the containing System or affected environment fails the use claim. |
| Stable records and changing reality | Evidence can be replayed, while configuration, environment, source, calibration, policy, and time can make its use stale. |
| Common engineering move and specialist depth | Systems Engineering must connect challenges to engineering decisions, while specialist practices define their own criteria and Methods. |
| Local revision and terminal gate | Evidence should change only the smallest earlier answer to which it applies, while a late pass/fail ritual encourages a one-way lifecycle. |