According to the AOPA the average age of single-engine general aviation aircraft in the U.S. is over 30 years old and is expected to continue increasing. One of the reasons aircraft age more gracefully than autos is the required maintenance. Aircraft are required to undergo an annual inspection by a licensed mechanic.
The inferior frontal gyri are located in the lower back portion of the frontal lobe on each side of the brain. Creativity depends on thinking skills that rely on the use of baseline knowledge combined with innovative thinking.
The Cerebrum is the upper part of the brain and is arranged in two hemispheres called cerebral hemispheres. The cerebrum is thought to control conscious mental processes. The outer layer of the cerebrum is called gray matter, the inner portion, white matter.