Foreign Secretary David Miliband told Adam Boulton on Sky there were only a few "rites of passage" needed before the Lisbon Treaty came into force and accused Mr Cameron of "dithering" because he did not "want to take on the euro extremists" in his party.

BBC: Tories 'to get Britain working'

As the passage implies, even something as seemingly simple as an airplane flying in the sky is actually just one part of a large sociotechnical system composed of various human and machine elements, from the pilot and airplane to a series of airports, communication and navigation systems, bureaucracies, regulations, rules and norms of flight, and more.

FORBES: A Domain Like Cyberspace