Great teachers are often the ones that live as great students. Professional musicians can benefit from continued learning just as much, if not more than beginners.
Too often, musicians spend wasted energy arguing over 'this way or that way', not realising that by opening one’s mind to learning from both ways could be extremely beneficial to the practitioner.
Without initial engagement from students towards their learning, wisdom told from teacher to class can fall on deaf ears.
Appreciation of others helps to understand from their point of view, and in many cases empathise with feelings put across.