## Perform 

In both cases, the pilots perform the turns. The pilot performing a turn at 120 knots exits the canyon safely; while the pilot flying at 140 knots hits the canyon wall, killing all onboard. Another area, although not a canyon, is flying around buildings. Just a few years ago, a pilot collided with a building during a turn. Had he slowed down, he would be alive today. 

The 3P model is intended to be a constant loop within which the pilot measures his or her actions through perception of the current, dynamically changing situation. Failure to do so results in error, an accident, and possible death. The pilot flying at 140 knots failed in this endeavor and paid the ultimate price. Therefore, the 3P process must be a continuous loop providing anomalies or reassurance that what is going on is what was predicted or unexpected. 

## Chapter Summary 

The study of ADM, its history, and models for decision- making while in flight is only a precursor to its practical application. Regurgitating the meaning of the concepts allows a pilot to pass a checkride and written examination, but understanding is what saves lives and improves flight skills. Therefore, one can say that understanding these concepts is superior to being able to state them in a precise order or with absolute accuracy. 

