With respect to other examples of walls, the core principle behind this wall is that you have a process in which a scope has been identified, and you have a clear written understanding among all parties potentially involved in decisions or discussions as to what is or is not within that scope. As well, you have a process in place through which that information then gets flagged, so that it will not be shared with the person who is subject to the wall. I think that's a fairly typical conflict of interest screen or wall; as I mentioned, you would find examples of that in most major law firms. I have put those types of walls in place for Governor in Council appointees in a crown corporation I've worked in. So there are a number of examples out there.
I would also say that there's nothing particularly unusual in the structure of this particular wall in terms of what it's based on or its foundation. There are a number of approaches. One approach is that you simply place a memo on the file that says “this file is not to be shown to person X”. This procedure goes further than that, in that it clearly sets out what happens in the event that for some reason information does go to Mr. Wright when it shouldn't have. It makes clear who's responsible for ensuring that files are segregated, whether they are electronic or physical files, and it makes clear that any questions around scope are ultimately to go to the Conflict of Interest and Ethics Commissioner.
So in that sense, it's a well-documented process and procedure, and the fact that it's made public will mean that people will be able to judge whether it is being honoured.