Sully:
As you've probably guessed, I am somewhat fixated on creating and using a bunch of little "catch" phrases and terms---eg "Maintenance Meld", "Big World" theory, "turbo boost" and "anti-turbo boost". I like them anyway but I also think if they can gain some currency they tend to help define certain things far more clearly and definitively for many more people. I think "Maintenance Meld" (MM) or "Ideal Maintenance Meld" (IMM) is getting there.
I tell you this because the term "greens within a green" (GsWG) is my term----you can look back deep into the orignial threads on this website and see that.
And I also tell you this because it will act as a reminder to one Patrick Mucci that every time he uses that term he either needs my written permission or he owes me one American greenback in royalty via copyright laws or his lawyer will be hearing from my lawyer and I will sue Patrick's ass clear across the state of New Jersey, or even America or the rest of the world depending on the purview of the term "GsWG".
But what does it mean and where did I get the term? I got it at NGLA after playing my first National's Singles tourney there. Basically, I'd rarely seen a situation on a green where if you happened to hit your approach into the wrong area of some greens your ability to two putt was virtually nil. The reason for that was that if you were in the wrong section of some of those greens (ex.#1,3,6,11,12,15) your chances of two putting was very poor to virtually impossible and on a few of them such as #1 or #3 your chances of even holding the ball in that segregated area ("green with the green") of the pin might not be good.
We've had a bunch of threads in the past on this website on the "greens within a green" concept and most of them concentrated on those NGLA greens.
The playability factors of "greens within a green" like those mentioned at NGLA is that they are highly strategic in an approach shot sense, perhaps way too intensely strategic for most golfers.
The reason they are that way is the transition areas on the green to get from one green section to another green section (with the pin in it) within the entire green are such that the golf ball will either build up too much speed or too much break on those transition areas and will simply not stop anywhere near various pins or even in the area ("green" (within a green)) that the pin is in.
But that's the "greens within a green" concept and theory at least the way I coigned it and used it on here about six years ago.
But the really cool thing about the "greens within a green" concept is if there actually is some way to transition the ball to the pin from one area ("green within a green") but it takes a huge amount of imagination and adept concentration and execution to do so. In that vein we are of course getting into the mind and imagination and execution ability of a putter like Ben Crenshaw.