The document discusses Rogers' innovation-decision process model which describes the steps an individual goes through when adopting an innovation. The five steps are: 1) knowledge, 2) persuasion, 3) decision, 4) implementation, and 5) confirmation. At each step, individuals gain awareness, form attitudes, decide to adopt or reject, use the innovation, and reinforce their decision. Communication channels and the degree of re-invention affect how quickly innovations diffuse through a social system.