As long as you prune branches that don't have action items, what's the problem? 5 why's presents a list of action items, and a justification for them. One acti

As long as you prune branches that don't have action items, what's the problem? 5 why's presents a list of action items, and a justification for them. One action item could depend on two leaf nodes of the RCA, or solve multiple leaf nodes.