Complete recording of every conversation leads to transparency along with atrocious decisions, due to groupthink among other things.
It's a most unfortunate dilemma, but it's a strong, well-documented phenomenon and you can't wish it away.
An example of groupthink:
I've been in a room, chairing a meeting, where everyone agreed on a definite course of action. Full consensus (except me).
When I asked each person after the meeting what they personally wanted, literally 100% of them disagreed with the decision they had affirmatively consented to. The actual decision was something nobody wanted. The option was only even brought up because people believed (wrongly) that other people would want it.
All of them "went along" with what they believed was the view of others in the room. They wanted lower friction; nobody wanted problems from dissenting (which includes time wasted in meetings due to believing there are different views to reconcile, even when that isn't actually true).
Unfortunately all guessed incorrectly what the view of others was, then went along with their guess.
When it's a big decision, it's tragic when that happens. Public duty has a lot of those.
When performing public duty, you must have transparency, and avoid corruption, but you also must have intelligent group information sharing, reasoning and decisions.
But you can't have them all. Wishing won't make it so. Choose your poison.
Or better, choose a multi-layered system with well-placed compromises to get both intelligence and transparency in some measure, in whatever arrangement provides best results.
I like what the Chatham House Rule wikipedia page says on this:
> It is designed to reduce the risk of what has come to be described as groupthink, where unpopular views are excluded from discussion, reducing the range of opinions an organisation can discuss.
With regards to corruption, one theory is that you need enough transparency that corruption cannot thrive; beyond that you get diminishing returns along with negative consequences in other areas. For a manufacturing analogy to corruption: To perform quality assurance that a batch of components is good, you don't need to measure every component, you only need to measure a random subset, chosen by the tester.