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SYSE.40:3 - Forces
| Force | Practical tension |
|---|
| Utilization and isolation | Sharing resources is efficient until one class prevents another from completing. |
| Admission and user outcome | Rejecting early can preserve useful work while still being a failed attempt for the rejected user. |
| Waiting and usefulness | A queue smooths short bursts but can retain work that is no longer worth completing. |
| Recovery and amplification | Retry can recover a transient failure or intensify pressure and duplicate effects. |