In 1917 a man called
Robert Smith-Barry proposed a new method of flying training:
The curriculum at Gosport was based upon a combination of academic classroom training and dual flight instruction. He was clear in stressing that students were not to be led away from potentially dangerous manoeuvres (THREATS) but were instead to be exposed to them in a controlled environment in order that the student could learn to recover from (ERRORS) of judgement.
Thus it can bee seen that TEM is now over 90 years old and is probably better known by most aviators as AIRMANSHIP!