There is none, I'm afraid. That's -- I think, in a way, that's the point I was trying to make a minute ago. There isn't algorithm for getting from principles to particular institutions.
I think something we could bear in mind is the particular symbolic importance of particular principles that we already have. So take the principle that journalists shouldn't be compelled to reveal their sources. I'm tentative for the reason I mentioned before, but speaking tentatively, it seems to me that we might think: well, in the UK, this is a principle that we all think of as very central to our liberal society and perhaps if we lived in a different society, we should be more willing to limit that principle than we should in the UK because of its historic importance. So that might be one of the contextual factors that would make a difference to where and how we decide to implement the underlying principles.