When does using the word "Since" disrupt the flow of a passage?

The use of the word "Since" can disrupt the flow of a passage when it appears in the middle of a narrative because it often implies a cause-and-effect relationship or indicates a time frame that might not align smoothly with the surrounding text. In the context of a narrative, where continuity and seamless transitions between events are crucial, inserting "Since" can create a jarring shift in focus or interrupt the story's progression. This disruption might confuse the reader or momentarily break their immersion in the story, making it less effective. In other scenarios, such as at the beginning of a paragraph or when introducing a new topic, "Since" may provide a clearer context or a transition that enhances understanding rather than hinders it. Similarly, in a closing statement, it can summarize or conclude ideas without disrupting the passage’s overall flow.