In The Pocket: Tasteful and appropriate control of note choices and values, dynamics, tempo, syncopation, and "locking in" these qualitites with other musicians.
I disagree that this is only about the drummer and bassist. All rhythm-instrument players can also be pocket players.
I also feel "the pocket" applies to far more genres than funk and R&B.
Right on, man. This is the best description of "the pocket" I've seen, encompassing stylistic elements and application. Cool.