Deliver content from the one who knows to those who do not know. In this teacher-centered approach to education, in which the standard lecture is considered to be the principal mode of delivery. Historically, ‘one who knows’ were small in number and access to factual content was extremely limited. During these period lecture as the means of delivery was probably a necessary process.
Content delivery by a learned sage via a one-way transmission mode – may not be needed anymore. It’s now readily and abundantly available virtually anywhere and anytime via technology. Sage is now free to stand aside, and adopt more of a ‘guiding’ or ‘facilitating’ function.