Nietzsche cuts against the comfortable illusion that reading, listening, or thinking *about* something constitutes understanding—a delusion especially common among the educated. What he's really saying is that knowledge isn't a possession you acquire but a capability you build through repeated, often uncomfortable action. A novice writer who completes ten flawed stories learns more about narrative than someone who has read a hundred craft books without putting pen to paper. The bite in this observation lies in recognizing that all our spectating, all our consumption of ideas, remains fundamentally hollow without the particular friction that comes from actually doing the work yourself.