The problem with tech people in education is that they can only think in paradigms that can "scale". If Zuck's mission was to "build a better school" and scale

The problem with tech people in education is that they can only think in paradigms that can "scale". If Zuck's mission was to "build a better school" and scale that out with better trained and incentivized teachers (the non-scaling part), the approach would be radically different. Instead, the mission is to fix education as a whole and make it work for every person in the world. Which leads to looking in a complete different part of the solution space.