The behavior of precise mathematical models can be analyzed using mathematical methods and computer simulations. Modeling provides concepts. Modeling is an experimental tool for testing theories and assessing quantitive conjectures. Models with appropriate complexity can be constructed to answer specific questions. Modeling can be used to estimate parameters by fitting data.
Models provide structures for coalescing and cross-checking diverse pieces of information.
Models can be used in comparing populations of different types at different times. Models can be used to evaluate, compare, and optimize various detection, prevention, and control programs. Models can be used to assess the sensitivity of results to changes in parameter values. Modeling can suggest information which needs to be collected. Models can be used to identify trends and make general forecasts.