On Mon, 26 Mar 2012, David Gerard wrote:
For some
reason a lot of BLP policy is like that: "here we have the same
policy we use for everything else, but we really mean it this time". This
never works, of course.
I think that's an overstatement - it sometimes
doesn't work, which is
quite distinct from "never works".
"The policy doesn't work" doesn't mean that all BLPs are bad, it just
means
that they are *as* bad as they would have been without the policy. The
cases you refer to as it "working" are cases where other policies work and
these polices provide no extra benefit.