Duplication Theory of Education
  
    Let me posit a duplication theory of education value: if
    something can be duplicated with limited costs, it can't serve
    as a value point for higher education. Content is easily
    duplicated and has no value. What is valuable, however, is that
    which can't be duplicated without additional input costs:
    personal feedback and assessment, contextualized and
    personalized navigation through complex topics, encouragement,
    questioning by a faculty member to promote deeper thinking, and
    a context and infrastructure of learning. Basically: human
    input costs make education valuable. We can't duplicate
    personal interaction without spending more money. We can scale
    content, but we can't scale encouragement. We can improve
    lecturing through peer teaching, but we can't scale the timely
    interventions and nudges by faculty that influence deeper
    learning.
    
  
  from George
  Siemens