What we know is that when organizations know they are being watched, they'd behave themselves better. The other interesting thing is that when more information is out there, it allows people outside of government to help the government and to say that it should maybe be looking at this and that maybe it got something wrong. It also allows for better decision-making outside of government.
I think the other thing that we should also be concerned about is just the amount of information available in general, not just secrecy but the amount of information available. What we know is that the government in a lot of circumstances isn't actually collecting as much information as it should, and we should be thinking about that too.