Nowadays it is common for business analysts to be in charge of development, testing, and ongoing maintenance of complex business decision models. However, whether you like it or not, your business decision models will contain bugs like regular software always does. They will fail to produce expected results under unforeseen circumstances. As a result, their authors will have troubles to understand why certain rules were not executed while others did. For real-world business models even the best explanation reports and execution traces would not be helpful to understand their behavior. What they need is a powerful while easy-to-use Rule Debugger to step through the execution of business decision models, pause it at any rule or ruleset, and inspect the state of the decision model. In this presentation we will demonstrate how business analysts can use a friendly graphical Rule Debugger to debug their business logic in business terms without becoming de-facto programmers.