Early concepts had a much more radical approach to breaking up the cabin into different zones, providing privacy for the individual and space for groups and families travelling together. This thinking finally transpired into the asymmetric headrest arrangement throughout the cabin which creates ‘double’ seats on the centre quads (for people travelling together) and single seats on the outboard triples (more for individual passengers travelling alone). The fixed wing on one side of the headrest gives the perception of ownership of space and some privacy between you and your neighbour.