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In [[science]], a '''model''' is an aid to understanding that represents an unseen or complex phenomenon.<ref>Wile, Dr. Jay L. ''Exploring Creation With Biology''. Apologia
In [[science]], a '''model''' is an aid to understanding that represents an unseen or complex phenomenon.<ref>Wile, Dr. Jay L. ''Exploring Creation With Biology''. Apologia
Educational Ministries, Inc. 1998</ref>
Educational Ministries, Inc. 1998</ref>
Models can be empirically found, or derived from fundamental laws. A good model has a well-defined domain of validity, in which it leads to unambiguous, self consistent results. Ideally it is easy to evaluate. To adaption of a model to a specific problem instance is done by model parameters, which can be defined/measured independently or left as free parameters to fit the model to a realistic situation. A large number of free parameters makes it difficult to assess the validity of the model without independent knowledge.
==References==
==References==