Use any available information, from stakeholder knowledge to secondary data, peer reviewed publications, key informant interviews, power analysis, or other methods to understand the strength of each pathway of influence in the current situation. For example, fish populations may be influenced by climate conditions, habitat condition, predator abundance, artisanal fishing, commercial fishing and recreational fishing. These drivers are unlikely to be equally powerful in determining fish population size and stability, and evidence from local fishers, fishery stock assessments, landings data or other sources should help identify which driver or drivers are most important. The most important driver(s) will be captured as key challenges in the next step.