I remember thinking as a kid that I could stop growing and choose a point in time when I could stay just like I was forever. Things change! Sometimes for the better. Sometimes, not so much. On the other hand, I remember as a kid  wondering once, when I had a horrible case of the flu, if I would ever feel good again. Things change! That's what this episode is all about; that "point in time" when the beginning meets the end. Things change!