When the writer skips off topic or adds in irrelevant sentences it can damage?

When a writer strays off-topic or includes irrelevant sentences, it can undermine the clarity and coherence of their argument. This distraction can confuse readers, making it difficult for them to follow the main point. Additionally, it can diminish the overall impact of the writing, causing readers to lose interest or disengage entirely. Ultimately, maintaining focus is crucial for effective communication.