df6d4bef_1__Introduction__Tame_problems__generic_
[0] 5 [Features of a wicked problem] Every solution is a “one-shot operation”: there is no opportunity to learn by trial-and-error, every attempt counts Some solutions required are related to social change, and changes in social policy occur at the national level, and cannot be piloted or trialed with a small population first, e.g., changes in welfare benefits paid, changes in taxation, provision of health services. [Tame problems (generic)] 
Interventions can be trialed and piloted.
1. Introduction