This document discusses the foundations of distance education. It covers why students demand distance learning even if they prefer in-person classes, Coldeway's quadrants that categorize different types of distance education, Richard Clark's theory that media are "mere vehicles" for delivering instruction, and Jim Finn's analogy of how technology like stirrups can change society. It also provides examples of distance education programs worldwide and in the US, key findings from the Sloan reports on perceptions of online education, and the concept of disruptive technology overturning existing models.