Many parents rigorously organize their children' s activities during playtime, thinking that doing so will enhance their children' s cognitive development. But this belief is incorrect. To thoroughly structure a child' s playtime and expect this to produce a creative and resourceful child would be like expecting a good novel to be produced by someone who was told exactly what the plot and characters must be.
It takes a necessary condition for something's enhancing a child's creativity and resourcefulness to be a sufficient condition for its doing so is the ground on which the argument is most vulnerable to criticism.