I love this thread, even thou, it's scattered with "opinions"... including mine.
However, I start to get under the impression that we are avoiding to look at the elephant in the room... to the point I feel we are trying to tell each other "there is no elephant, just stop bumping into it!"
The reason we debate "systems" like scales/modes, arpeggios, pockets/shapes etc "PATTERNS", is that we CAN't play like BE, JB, JD, PF, LG, CC etc. and we are in a constant search or a "system" which will give you what "they" seem to have... the freedom to play.
PF insist on learning your "intervals" (he actually means "degrees")... this from a man who promoted the modal approach decades ago and mentions that the reason LG played like he did was because he knew his degrees (the root, the 9th, the minor or major 3rds, the fourth, the 5th and thus the flat 5th and aug. 5th, the 6th and the flat and major 7ths. This makes sense, because it's the DEGREE in a chord that "colors" the musical message. Whereas a note NAME can have any degree as chords move and thus it's musical message will vary. An "A" can be beautiful played against a B-chord and point to what's coming.. a 4th up. But an "A" can sound awful against another chord.
While I follow what I believe to understand, in my case chords, intervals and degrees and thus map after roots and chords and construct my or analyze other people's "pockets" or "shapes" based on that system. PF did GREAT playing modes in the 70's! I believe Jo Wright was at a time studying and applying modes too and I feel that many "name"/professional players which had great technique played some kind of "steel guitar jazz" using mostly and quite indiscriminately the one or two most prominent modes which were touted to make one sound "Jazzy". I just can't stand listening to that very long. I'd rather listen to BB playing 2 notes which are 3 seconds apart but are pushing the right receptors on my fat-cells.
So, every system works. BUT you have to MAKE it work.
I had a somewhat tense discussion with Jeff Newman during a break at one of his traveling boot camp events. Jeff was a great teacher and I miss him, his teaching, his wit and showmanship and music DAILY. But I disagreed on the concept of pitching the Pentatonic as "OBAIL" (Oh Boy Am I Lost)-scale. The concept that EVERY note works is not true, and the concept that you can play without knowing what chords are played (especially in a 3-chord environment) seemed to me an odd thing to "teach".
It is JEFF who correctly said what another great musician said before him:
Only play what you hear, if you hear nothing, play nothing.
I see youtube-"teachers" starting to explain licks and run like a TAB sheet... out "cold" without playing it thru once first and encouraging to LEARN it in your HEAD, gain the ability to hum or whistle it or run the "melody" thru in your head.
Usually NO mention of the underlining chords.
Instead, just like TAB they go something like "place yer bar on the 3rd fret and pick string, uh 8... sorry 7 and then....
IF self-proclaimed teachers show you things like that on a LIVELY format like a VIDEO and don't explain why, where, because of... it's because they themselves wouldn't know.
That's not a problem, but it becomes one when students learn to learn that way.
You not only learn to play a like, but by repetition you accidentally LEARN-to-LEARN in a totally wrong manner.
I find that when I learn to hum a lick, phrase, or line... I can play it much faster, better, more musically. It takes some self discipline to do it. A great many Jazz icons have been know to use that method... George Benson made it a trade mark of his style and even live appearances. I had the opportunity to briefly discuss that with him after an appearance in France (and he loves "Gypsy"-Jazz and hang around with Bireli Lagrene and Stochelo Rosenberg) and he told me very quickly "DO IT and you will see!".
What I am trying to say is:
I remember well that BE's "Pocket"-article created some chatter for decades that followed and many just ended up agreeing that BE tried to "say something".
Yes, the articles lacked instruction, lacked connection to the chords being played, movements (iim-V etc) and too many just set them up on their note-stands and proceeded to "noodle" (to use one of JN's terms) the hell out of them without THINKING MUSIC... like it was supposed to do it for us... make us sound like BE on the spot.
Jeff Newman stressed joining a band EARLY on... and also was one of the first to sell rhythm tracks and and "Ear Training" course. Today, you can download rhythm tracks from youtube for FREE for virtually ANY song in ANY style, tracks to practice iim-V's and other common changes in all "Keys" until the cows come home and scream "Oh cut it out now!" (like cows "scream"! Ha!).
Fist mistake most do, they click play and proceed to noodle on the instrument.
Maybe a more productive way to learn would be to sit back and listen to iim-V's for a while to get into the "feeling" and start coming up with crap in you head, whistle or hum in all "Keys". And THEN only try to lay it out on the neck.
Chances are, after not too long BE's pocket's or the scale or modal patterns or arpeggios you practiced will start blinking at you from under the strings!
Music doesn't start at the loud speaker or the fiddle, it starts in your head/heart.
Patterns (to use a term for ALL the pockets, scales/modes and/or arpeggios) are just a tool to find home bases to start off from and find back home too. They are anchors, parking spots, express lanes "WHAT EVER"... but the music is not within, it's in YOU.
And don't come on here "oh maybe I am not so musical"! BULL SHIT! You don't choose STEEL GUITAR over all the other instruments, over let's say DRUMS because you are "not musical". Don't tell us you bought a strung up table with Ford truck clutch pedals attached to it, because you thought the chicks would find you sexy while bent over it like you'd be filling the bands tax declaration while the guitar players wiggle their tails!
... J-D.
b0b feel free to make that work in 4 lines. Please!

(oh boy, I know he's going to do it!)