In medias res is a literary term meaning a story that starts in the middle.  Characters are introduced before any background is given, and the plot is forwarded by means of flashbacks.

It seemed to me that this is a particularly appropriate title for this blog, for several reasons: first, the very structure of a blog mandates this kind of story-telling; second, this is a blog about life from the perspective of mid-life, and about the experience of mid-life; third, we are raising an autistic child, and he has just entered adulthood, so we are entering a middle stage with him; and fourth, I am pursuing a Ph.D. in English literature so using a literary trope seems apt.  So welcome to the middle of my life.