The beginner has just stumbled onto the rifle. He has no context, he just feels the pull towards the steel and walnut, or fiberglass, or aluminum and plastic, or the massive claw extractor, or the power and speed (mostly these last). The beginner has a choice: to remain a beginner with some cool equipment, or to adopt a method and begin learning about shooting. In the flow charts that follow, notice that to the left is an end, and to the right as a continuation.
The acquisition of a little skill is kind of a milestone- hence the new black belt for the uniform. Curiosity on the part of the practitioner may lead him to explore other contexts of skill in the same discipline. This is frowned upon by insecure instructors, or those with an immature level of skill themselves. This brings the practitioner to another fork in the road: to wallow in his expertise in his system, or to begin to feel what is outside of his system, which is to question the system itself.
Note that the rifleman does not necessarily need to leave the system. He may decide that the system is sound, although he will have improved his mastery of it through his questioning. He will find weaknesses that he will learn to address.