A theory is a concise statement about how we believe the world to be. There are several things to look at when evaluating theories:1. Descriptive adequacyDoes the theory accord with the available data?2. Precision and interpretabilityIs the theory described in a sufficiently precise fashion that it is easy to interpret?3. Coherence and consistencyAre there logical flaws in the theory? Is it consistent with theories of other domains?4. Prediction and falsifiabilityCan the theory be falsified?5. Postdiction and explanationDoes the theory provide a genuine explanation of existing results?6. ParsimonyIs the theory as simple as possible?7. OriginalityIs the theory new or a restatement of an old theory?8. BreadthDoes the theory apply to a broad range of phenomena?9. UsabilityDoes the theory have applied implications?10. RationalityAre the claims of the theory reasonable?Postdiction refers to predictions under controlled conditions. ...

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