It's all bull**** folks and its all bad for you.
Nothing in the flying training syllabus or aviation legislation has improved the training of pilots since the "Flight Instructors Handbook".was the training manual to go by. This was issued by the then CAA, way back when the rools could be contained on the single shelf of a small bookcase. The quality of a pilot is down to both the instruction received and the aptitude of the student and his/her willingness to go out and learn solo, not by definition or legislation.