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MMP.11:3 - Forces
| Force | Tension |
| Retained knowledge and flexibility | A structural relation can rule out impossible candidates; an unsupported restriction can remove the needed one. |
| Local fitting and coupled behavior | A contribution can fit its own samples while disrupting the model in which it is used. |
| Simple representation and family coverage | A small parameterization is easier to fit but can omit admissible functions. |
| Parameter recovery and useful inference | Parameters may remain ambiguous while a required consequence is determined. |
| Prediction and intervention | Two accounts can agree during observation and differ after one mechanism is changed. |