Chapter Summary 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. 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. 5-13