With a good discussion,how can decision analysis methods apply to systems engineering problems? And What is the main takeaway from the article? Choose one of the decision analysis tools and then Demonstrate or describe that approach highlighting its application to systems engineering problems. Five Why's Method is a very common approach that is been used in many contexts. This method intends to help identify root causes for a problem or outcome rather than symptoms. Identify a problem you have faced at work, home, or school and apply the Five Why's Method. Also, try to clearly identify some of the problem, the whys, and the identified and describe root cause. Finally please try to reflect on the utility of the approach in systems engineering applications.