[mitcheme]

Maybe you're right, that it makes no difference to him. To me, it matters a great deal. None of these systems are static; they are constantly changing, and we have some control over how they change. You can compare the systems that already exist, and on some set of criteria say that these are better or worse than those. So although there's never going to be 'one system to rule them all', at some point I think we do need to figure out which aspects of our system are variables and which are constants, because if we don't decide what to change, someone else will decide for us.