I will just add the caveat that just because we can't see the evidence from the sidelines doesn't mean it doesn't exist. There might be confidentiality reasons; there might be crisis-time circumstances.
That is just one caveat to keep in mind. Just because we can't see the evidence from the sidelines doesn't mean it doesn't exist. However, that's sort of the case to point out that perhaps evidence should be available as a default, and only in crisis times should evidence remain private for a while.