The tube is based on actual research that Amber stumbles upon in the Brain room (her search for information). The research used Virtual Reality headsets to reveal the extent that paranoia occurs in the general public.
To evoke this Graham designed characters that were both detached from our imagined world and believably designed by it i.e. a world within a created world. The heads have no prominent features except eyes, meaning that shifts and movements by them become much more poignant. The sectioned, undulating motion of a tube carriage compounded with the flickering lights and a ‘CCTV’ edit mix drew the viewer in much like the original experiment did.