Themes

Like the simplicity of this and how it allows for 'incremental build' - it gives us some stability so that we don't get bogged down in all the possibilities but does let a lot of stuff hover about until we need it. Imagine wormholes between the columns allowing for fetid seepages to pass to and fro.

The core is:

land
railway
postal

But these build so that it is more like:

land
land | railway
land | railway | postal

i.e. that the previous element is still there and we are building not just erasing. Obviously the previous state has been altered but its importance (and presence) remains in the physical and narrative sense.