This is what happens when you don’t focus on STEM, but instead devote entirely too much attention to feels:
Alternate explanation: a tacit admission that including parents, teachers and students all together leads to education not working at all. One of them will have to be moved out for the system to function.
This one fails on *several* levels. Not only the mechanical impossibility of it, but the fact that the gears are identical. Identical gears mean that, say, Tooth 4 on Gear A hits Tooth 4 on Gear B on each turn, without variation. Which means that as damage begins to accrue, it only builds on itself, and the system starts to shake apart. What you want is a system where every tooth on Gear A hits every tooth on Gear B.This way any damage is sorta smeared out, evening things out and reducing vibration.