This song speaks wonders for so many.  But the truth of the matter is that it’s all choices of value which determine who is and who is not simply somebody who we used to know.  The sad thing to me is when I don’t realize until it’s too late in the diminution of the relationship that someone has become somebody that I used to know.  But humankind are disposed to substitute time spent in one activity they perceive as less significant for time spent in another activity they perceive as more significant.  And in so doing, their lives change, regardless of whether or not they’re realizing it in the process.  People always become “somebody that I used to know.”  I just hope some of my relationships, through my development, don’t have the same fate.