The Three Rules
Malcolm Gladwell describes the "three rules of epidemics" (or the three "agents of change") in the tipping points of epidemics.
Read more about this topic: The Tipping Point
Famous quotes containing the word rules:
“Rules and particular inferences alike are justified by being brought into agreement with each other. A rule is amended if it yields an inference we are unwilling to accept; an inference is rejected if it violates a rule we are unwilling to amend. The process of justification is the delicate one of making mutual adjustments between rules and accepted inferences; and in the agreement achieved lies the only justification needed for either.”
—Nelson Goodman (b. 1906)