1. Cannot talk in class
2. Random allocation of students to classes
3. Forced talking sometimes in group work/discussion w/o ability to fire
4. Optimally, socialization can help learn new content. However, school follows the same curriculum for all, so talking about school subjects is zero new info/ learning and thus little novelty
5. No ability to move people like loud ones from the room (student's perspective)
6. Rather, it's too noisy and prone to interruptions for meaningful discussion
7. Raj says that in class the teacher doesn't pick twice within 5 minutes and then too quick topic drift. In fact, time pressure makes for less deep too!