In cultured pearls, a mother-of-pearl bead or a piece of tissue is inserted (by man) into the mollusk to start the process. For both, the quality of the nacre dictates the quality of the luster, or shine of the pearl, which is very important to its beauty and its value.
For an airplane pilot, education takes many forms, including applied instruction, a high school diploma, an associate's or bachelor's degree, and specialized training. The Federal Aviation Administration also requires pilots to accumulate a lot of real-world knowledge in the form of flight-hours.
How do I become a pilot? The Air Force trains pilots through its undergraduate pilot training program. Air Force pilots are generally officers who compete for the pilot training slots. Air Force flight training has strict vision requirements. The vision requirements are 20/50 for pilots and 20/200 for navigators.