The quote from Marian Keyes' "The Mystery of Mercy Close" reflects a person's tendency to form immediate negative opinions about others. This behavior suggests a desire to simplify interactions by quickly identifying who might not be a good fit in their life, thereby saving time and emotional investment. It points to a cautious approach where initial impressions dictate future engagement.

This idea can resonate with many who find that first instincts about others can often align with later experiences. While instant dislikes may offer a quick filter for relationships, they also risk overlooking the potential for positive connections if judgments are made too hastily.