# Chapter 13 - 13.2 - Computational Modeling - Practice Problems - Page 653: 3

\begin{array}{l}{\text { It most likely would make the conclusions less valid and much less }} \\ {\text { usable. The idea of every customer taking the same amount of time is }} \\ {\text { unrealistic. Therefore, making this assumption would cause our model }} \\ {\text { to be a very poor abstraction of the real system. If your assumptions are }} \\ {\text { wrong, then there is a far greater likelihood that your conclusions will be }} \\ {\text { wrong, as well. (We called this "garbage in, garbage out" in the text.) }}\end{array}

#### Work Step by Step

\begin{array}{l}{\text { It most likely would make the conclusions less valid and much less }} \\ {\text { usable. The idea of every customer taking the same amount of time is }} \\ {\text { unrealistic. Therefore, making this assumption would cause our model }} \\ {\text { to be a very poor abstraction of the real system. If your assumptions are }} \\ {\text { wrong, then there is a far greater likelihood that your conclusions will be }} \\ {\text { wrong, as well. (We called this "garbage in, garbage out" in the text.) }}\end{array}

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