This is not going to be a short post since a whole lot of information has to be explained. For those of us who wish to bring our game up to a whole new level I present you with not a literal 120 step program but in depth information that will allow you much more control over yourself and thus, those you interact with. Some one who could get so far into your psyche that you would knowingly hand over your assets without question is a far more valuable tool and dangerous foe then any simple Jedi trickster.
My point is that a social engineer is a great asset to any team but a really good social engineer would be able to do more then trick a low level secretary into reveling her password and undies over snap chat.
It exposes the mind of the person to be probed and all the deepest secrets known along with some other cool tricks, few of which I know since while it is a wildly popular show, I myself did not follow it. For those familiar with the popular series Star Trek the mind meld is a pretty cool trick.