The key point lies in taking the context into account. Without it, it is impossible to formulate an accurate and fair judgment. The same detail can have opposite meanings depending on the circumstances.
Dirty fingernails during a job interview or formal meeting will undoubtedly raise questions. However, after a day’s work on a construction site or in a vegetable garden, they tell a completely different story. In the first case, one might indeed suspect a certain carelessness; in the second, they reveal the evidence of hard work.
This simple example illustrates how misleading our hasty judgments can be. What we observe represents only a fragment of reality, rarely its entirety.