It's a map of a world that doesn't exist: twelve feet wide and as tall as a Tataru. Fussy details are in tension with swathes of empty, gold-leaf space. It is what I once imagined adorned every videogame developer's wall, a map to a virtual land where the treasure isn't a spot marked with an X, but the world itself: emerald hills, sapphire rivers, and mountains draped in ice.