The inability to do something, does not automatically qualify one to be a teacher.
In other words, good teaching is not the by-product of poor performing.
Telling people “if you can’t do, teach” creates the illusion that becoming a successful teacher requires less effort and mastery than becoming a successful performer.
Teaching, however, is a skill in its own right and, as such, it requires as much dedication, training, and diligence as any other field.
If one cannot handle the demands of doing, the classroom is the last place he should hide.
The last thing the learning community needs is a generation of educators who see their occupation as the default position reserved for those whose primary competence is incompetence.
If you can’t do, please make sure you know what you’re doing before you teach someone else.