The concept of a Subject Matter Expert (SME) is well known in training and education.
It is generally recognised that a trainer/educator may be competent to train ie knows the necessary skills and has the ability to deliver training in competent/professional manner. That same trainer may not have the necessary knwoledge in the subject to effectively facilitate learning in the specific field.
A subject matter expert is just that. Jim Fraser of Fraser Associates has suggested that there are additional degrees of expertise and has offered the definitions of "Subject matter resources (SMR's); subject
matter experts (SME's) and subject matter masters. Someone could be one of the above in training, in a specialized content area or both. The highest order of our tradecraft isn't in
our ability to do it, it is in the ability to teach others to do