Four Principles of Modeling The model you create influences how the problem is attacked. ◆ Every model may be expressed at different levels of precision. The best models are connected to reality. No single model is sufficient. Object Oriented Analysis and Design 7Object Oriented Analysis and Design 7 Four Principles of Modeling  The model you create influences how the problem is attacked.  Every model may be expressed at different levels of precision.  The best models are connected to reality.  No single model is sufficient