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Behavioral Mathematics for Game AI by Dave Mark

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Reasons for Variation

There are a number of reasons why we would want to create variation in the decisions our agents make. We can illustrate some of them best by using examples of what it looks like when variation is not present. Imagine the following:

We enter a bank containing 20 customers, and 5 employees. We approach the middle of the lobby and begin yelling loudly that we are robbing the bank. As we look around to assess the impact that our display is having on the people, we are stunned to realize that all 25 people are reacting in exactly the same way. They are all standing there in stunned silence, too afraid to move. Not a single one has screamed or spoken. Not a single one has taken a step away from us—or toward us, for that matter. ...

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