This prevents there being a mismatch between the challenge and the chosen approach, as this gap is often the cause of chronic and recurrent problems. Step 3, Ask participants to discuss the problem as a couple (group of 2 participants). Five minutes. What is possible? They can help individuals or groups avoid frequent error, solve a problem with methods that are not adapted to the nature of their challenge. The combination of two questions makes it possible to sort the challenges into four categories: simple, complicated, complex and chaotic. A problem is simple if it can be reliably solved with practices that are easy to duplicate. Things get complicated when experts have to come up with a sophisticated solution that delivers the expected results in a predictable way. .