In Haruki Murakami's novel "1Q84," there is a significant emphasis on the importance of detailed descriptions when introducing unfamiliar elements in fiction. The idea is that when writers present concepts or items that readers are not accustomed to, they must provide a thorough explanation to ensure clarity and engagement. This level of detail helps to create a vivid and immersive world for the audience.

Conversely, Murakami suggests that commonly known things can be described more succinctly or even omitted altogether. By focusing on the unique aspects of the narrative and leaving out the familiar, the author can maintain the reader's interest and enhance the story's originality. This approach encourages writers to be thoughtful about what to include in their work, ultimately shaping a more compelling and cohesive narrative.