Even more so than to music and movies, this applies to literature imo. It conveys thoughts and emotions in a way that is more nuanced and detailed than other mediums. It doesnt alleviate the reader of any mental work; they must imagine everything - feelings, sounds, colors, images - for themselves. Also, because literature allows the reader to interpret the story and visualize it in their own imagination, it can often create a deeper emotional connection than films or music, which are imo more limited in their ability to depict complex thoughts and emotions.