To find a proper solution, you need to know whether you focus on the right problem. Sometimes there is another problem behind the problem. To figure this out you can use the cause diagram. What is the real problem you are trying to solve here?
After filling out the worksheet of the cause diagram, you continue in small groups or pairs. Go through each symptom and cause: are they correctly placed? Discuss what you can learn from this in terms of clarifying your aims. Make sure you don’t mix causes of a problem with its symptoms.
Finally, explore similar kind of problems (and solutions, if possible) in other fields (remember cross-industry innovation by Ramon Vullings).