I think RS as are all of our policies are guides rather than definitive which is why we have an Ignore all rules aspect to WP. There's a point were common sense comes into play. Its often in arguments rather than discussions about sources where policy and guidelines become weapons rather than markers towards better practice in sourcing, And I don't mean best. When editors drop individual and personal positions and instead have as a major concern the best content, great collaboration and great articles can be a result. In an ideal environment editors would look together at sources and could perhaps agree that the best source may not always be the one that falls within the confines of a definite view of policy. I am in  no way arguing for less than reliable sources. I am arguing for excellent editor collaboration and the resultant agreements as to what sources are best in any given situation.(  )