Yeh. We go around always expecting our machines to work even when they have clearly gone awry.

Tomorrow you will expect that the elevator and the escalators and the lights and the heat will work; until they don't.

Failure of 'dependable' systems can take unforeseen twists.

Yeh. We go around always expecting our machines to work even when they have clearly gone awry.

Tomorrow you will expect that the elevator and the escalators and the lights and the heat will work; until they don't.

Failure of the system takes unforeseen twists.

Yeh. We go around always expecting our machines to work even when they have clearly gone awry.

Tomorrow you will expect that the elevator and the escalators and the lights and the heat will work; until they don't.