A decade ago, Sal Khan envisioned using technology to tailor education to individual and community needs.
To explain the concept of network effects, Stanford Department of Management Science and Engineering lecturer Ravi Belani contrasts Facebook with Angry Birds. Both grew rapidly in terms of users, but Angry Birds’ emphasis on a single-player mode meant that its revenue grew in a linear fashion relative to its customers. On the other hand, Facebook’s revenue grew exponentially due to the exploding value of its network.