The article emphasizes the importance of critically evaluating ideas by asking, “What’s wrong with this idea?” This approach shifts focus from seeking approval to identifying potential failures. Paul Arden’s insight highlights that framing questions this way invites honest feedback, which is often lacking in environments where people hesitate to criticize due to power dynamics or a lack of emotional safety. Many team members, especially those with less experience, might not feel empowered to challenge ideas unless prompted. Three mental models illustrate how to apply this questioning technique. The first model, “Crossing a One-Way Street,” suggests that questioning helps anticipate unforeseen problems, akin to looking both ways before crossing a street. The second model comes from a legal perspective, where a prosecutor considers how they might lose a case, prompting thorough analysis and preparation. The third model, inverted thinking, encourages teams to envision potential failures of their ideas, helping to identify risks before they become issues. The article also touches on the limitations of AI in providing feedback, as many AI systems are programmed to please users rather than challenge their ideas. By rephrasing questions directed at AI to focus on potential flaws, users can receive more critical insights. The author urges teams to embrace this critical questioning, fostering a culture of open dialogue and vulnerability to improve outcomes.