Training is as old as the human race, older; even young animals engage in forms of training to hunt. For humans training is especially important, it is needed to overcome the conscious mind.

One of the oldest forms of training is Tai Chi, practiced as a basis for the Chinese martial arts. It is an example of the effect on the trainee, fundamental to any skilled activity. Martial artists train in order to transfer the skill to the unconscious mind, such that the maneuvers can be deployed instantly without conscious thought. When fighting for survival, confusion about what to do is usually fatal to the confused.

It is the same for the skilled musician who must have complete unconscious command of the instrument in order to be free to interpret the music.

Even writing, as Fu-Manchu is doing here, requires training and practice to facilitate an easy flow of words that is a pleasurable ordering of thought. For the writer, training and practice culminates in an individual voice that is a conversational pleasure between the author and the reader.

Pilot of a fighter aircraft keeps the necessary skills at high pitch by training in actual aircraft and in flight simulators.

To be good at any human activity requires basic training, advanced training, then recurrent training to keep those hard-won skills sharp.