Apologies - it was not my intention to paint those who have difficulty communicating as non-teachers. I myself am not a great verbal communicator, and construct thoughts far better in text than on-demand with sound.

"Verbal" was a poor choice of words in my original comment. I only meant that if you are asked to explain a task you do often through whatever means are available to you, and you are unable to in your own mind create an analog of it to something else, then that is a sign of overtraining