Maximum difficulty isn't the same as optimal difficulty.
How can we do our best when we are spending our energies trying to make others lose - and fearing that they will make us lose?
Being a team player should not imply a demand for simple obedience and conformity.
When we do things that are controlling, whether intentional or not, we are not going to get those long-term outcomes.
Learning is something students do, NOT something done to students.
Children learn how to make good decisions by making decisions, not by following directions.