The system or POV(now) is all this redundant knowledge I've acquired over a long time. Played professionally in just about all forms of music, except rap and/or hippoop.
You name it, I've probably played it at one time or the other for money. Classical guitar to pure jazz, in asundry of circumstances. Reading to non reading. Those pesky pents
and knowing how to alter them and understanding the extraneous knowledge is the key to modern day good guitar players. Pretty much all guitar players start with pents to play lead. Just moving pents can give the exact same results that all the knowledge in traditional theory provides. It's difficult to see at first, but incredibly easy to do. The theory helps with the tricks.