The article shares a childhood experience where the author learned about the dynamic behavior of seatbelts and how it taught them to be more cautious when judging something as poorly designed. The author proposes a rule of thumb: 'My willingness to judge something should be proportional to how much I know about it.' This rule is applied not only to product design but also to judging people and systems. The author encourages readers to give more benefit of the doubt when they don't know much about a subject.