This is how the present must be considered whenever we try to think about it as the past: It must be analyzed through the values of a future that's unwritten. Before we can argue that something we currently appreciate deserves inclusion in the world of tomorrow, we must build that future world within our mind. This is not easy (even with drugs). But it's not even the hardest part. The hardest part is accepting that we're building something with parts that don't yet exist.