Not just the textbook, but the teacher. The current teacher role will be supplementary and act more like a psychologist or counselor in keeping students on trac

Not just the textbook, but the teacher. The current teacher role will be supplementary and act more like a psychologist or counselor in keeping students on track, providing more one-on-one support, encouraging movement and release of physical energy, guiding students toward their own goals rather than dictating requirements, helping students recognize the value of learning, sending disruptive students to a separate (possibly more physically oriented) workspace, recognizing and helping students through mental health and other issues. Using MOOCs, content can be swapped out like battery packs. The counseling role is uniquely human and can become much deeper service than is currently available to students.