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SYSE.31:3 - Forces
| Force | Practical tension |
|---|
| Speed and reach | Small checks give early feedback; some behavior needs a running application, real integration or human exploration. |
| Stable tests and real variation | Controlled fixtures aid diagnosis; removing genuine concurrency or environment variation can remove the defect being sought. |
| Local ownership and cooperation | Developers need to repair feedback quickly while testers and domain specialists contribute different acceptance knowledge. |
| Availability and maintenance | Keeping every test forever increases burden; dropping a test can remove the only evidence for an important claim. |