In dreams Agents' own minds are the relation of the imaginary plane to Agents' own underground landscape. The grid's only function is to provoke Agents' realization of Agents' own landscape in actuality. The grid exists so as to become invisible. The grid exists so that it doesn't have to. The invisible is real.
Dreams are real.
Shelter is context. One narrative theory is that the sun never sets. Agent Yellow, from a distance, disappears into the landscape. Agent Red is still disappearing, though Agent Orange is still here. Perspective is constitutive of Agents' social being.