It was a complex but relatively stable world defined by a network economy that was extremely rigid in some ways, and fluid in other ways.

FORBES: Entrepreneurs are the New Labor: Part I

Thatcher became Prime Minister in 1979, British labor unions were quite powerful but labor markets were rigid, inflexible and in many ways uncompetitive.

FORBES: This is a guest post by Stephen Bronars,

It also raised the threat of an all-out war, in the courts and in Congress, over technology that is steadily destroying the once-rigid walls between cable television and myriad other ways of distributing video content.

FORBES: Diller's Aereo Survives First Battle, Threatening All-Out Legal War Over TV

Airports are essentially machines for processing people, airplanes, automobiles, cargo, and luggage all of which move in different ways, and which need to be connected at certain points and separated by rigid security at others.

NEWYORKER: Situation Terminal