The constraints of childhood
When a constraint is imposed upon a child without her understanding, she can’t apply it in novel circumstances, or know when to ignore it, or use it to acquire some new idea. Instead, it becomes fixed in time, unable to improve, a lifeless feature of her world. What’s worse, this constraint will grate against other ideas that she has, but since the parent has resorted to coercion, she is on her own to try to resolve the conflict that this grating represents.