Maybe all of those, so you can see the sequence of the change of opinions looking back. You do a bunch of these for different kinds of debates and you might get two things happening. In a sense, you get the ancestors watching. You get the future watching the debate, so it's not just being played out for one's immediate constituents, but for the future constituents of the issue. You can begin to build a discipline of how to have a good debate about issues that have long-term consequences.
Digital information lasts forever, or five years, whichever comes first.
As you know, Jeff Rothenberg says that digital information lasts forever, or five years, whichever comes first. This isn't even a copyright issue. Actually, storage is doing just fine. Data is being created at a ferocious rate, but storage doesn't matter, because it's being lost at a ferocious rate. It used to be hard to make copies, so you took good care of them.