Sometimes you simply want to be clear if something is either true or false; fuzzy states are not acceptable. In this post I’ll try to help you to cope with such cases having agile methods in particular in mind. It’s about defining and crossing the threshold in order to enter into more efficient software development method. Once the goal is defined we need to know how to achieve it and finally measure the achievement when the threshold will has been crossed. We refer to Crossing the Rubicon idiom to address the topic.