2 shows an example of three building subsystems
, a lighting system, space-people system and a hydraulic heating system.
Re-directing the thinking to that of a "whole building" concept rather than separate, independently designed building subsystems
Operational activities in various building subsystems
can be monitored to detect inefficient operating conditions, allowing for corrective action to be taken.
But he said that there was room for small member states with smaller contractors too, that it would be "absurd" for them to build combat aircraft where none already exist but that they "should aspire to building subsystems
and components software put together by big contractors who would increasingly become systems integrators in the future".