Human nature is such, that when we witness or overhear a conversation, we instinctively make assumptions. We listen to what people said and how they behaved. So, we naturally draw our own conclusions thinking we have the information.
Yet, how often do we stop and consider there may be another perspective? That we may be missing some key facts vital to the story? That we may have misunderstood what the person actually said? Or there may be a reason why they behaved the way they did?