The PIC must always be alert in order to maintain the safety of the aircraft and their passengers Safety

Aeronautical Decision-Making

Excerpt from FAA Weight Shift Control Handbook

Aeronautical Decision-Making (ADM)
A PIC’s attitude or mindset must always be alert in order to
maintain the safety of the aircraft, passengers, and the general
public on the ground. To accomplish sound aeronautical
decision-making (ADM), a pilot must be aware of his or
her limitations and well-being (physical and psychological
health), even before beginning the first preflight routine.
While technology is constantly improving equipment and
strengthening materials, safe flight comes down to the
decisions made by the human pilot prior to and during
flight.
The well-being of the pilot is the starting point for the
decision-making process that occurs while in control of the
aircraft. Just as physical fatigue and illness directly affects
a pilot’s judgment, so too will attitude management, stress
management, risk management, personality tendencies, and
situational awareness. Hence, it is the awareness of human
factors and the knowledge of the related corrective action that
not only improves the safety of operating a WSC aircraft, but
also enhances the joy of flying.