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NOT.6:3 - Forces
| Force | What must be reconciled |
|---|
| Local usefulness and joint reading | A representation can work well alone while making its connection to another hard to recover. |
| Shared references and different subjects | An object, its model and its encoded value can be related without being the same thing. |
| Redundancy and maintenance | Repeated content can aid comparison but must follow relevant changes. |
| Automatic propagation and intended edits | Updating every displayed value can erase a constraint or alter independently obtained information. |
| More operations and coordination effort | An additional representation earns its place through useful work, while it adds learning and navigation demands. |