You see a Key Concept, one of the most important principles according to which the world in general and the world of people operate.
These concepts are referenced throughout the Patterns series, including the Patterns for Victory series and Us or Them!. A concise summary and two or three key examples are provided at the beginning of each volume. See other key reconceptualizations.
Causes are not usually single-factorial. Investigations into the cause of a passenger plane crash typically refer to the cheese slice model. Each slice has its own, pseudo-randomly distributed holes. Several slices represent successive elements in a chain of events: mechanical error, pilot fatigue, material fatigue, and so on. A crash occurs when a configuration of slices occurs that leads to an accident. This hypothesis is formally called the Swiss Cheese Hypothesis.
http://chiny.pl/pliki/patterns-swiss-cheese-model.png


There's another way to conceptualize events and explain how various forces influence the course of events. This reconceptualization involves understanding that, on one level, economic forces, a trend of events might lead to, say, social unrest. However, secret police intervention, such as arresting the ringleaders, might prevent the outbreak from occurring.