In order to achieve the highest level of safety:

The emphasis on each crewmember carefully crosschecking each other reflects a fundamental principle of aviation safety known as "crew resource management" (CRM). This principle encourages collaborative decision-making and communication among crew members, promoting a safety culture where checking and verifying each other’s work helps prevent errors or oversights. By engaging in this crosschecking process, crews can leverage each member's insights and expertise, leading to more accurate and informed decision-making.

In high-stakes environments like aviation, reliance solely on one individual's judgment—no matter how experienced—can introduce risks due to human factors such as fatigue, stress, or oversight. By having crewmembers support each other through systematic checking processes, the likelihood of identifying potential issues before they escalate is significantly enhanced, ultimately leading to safer operations.

While continual monitoring of seat-dependent tasks and automation can contribute to safety, they do not inherently provide the level of interactive oversight that crosschecking offers among crew members. This collaborative approach fosters a proactive safety environment and strengthens the overall efficacy of the crew’s performance.