In effect, ALS constitutes progressive imprisonment without parole. First you lose the use of a digit or two; then a limb; then and almost inevitably, all four. The muscles of the torso decline into near torpor, a practical problem from the digestive point of view but also life-threatening, in that breathing becomes at first difficult and eventually impossible without external assistance in the form of a tube-and-pump apparatus. In the more extreme variants of the disease, associated with dysfunction of the upper motor neurons (the rest of the body is driven by the so-called lower motor neurons), swallowing, speaking, and even controlling the jaw and head become impossible. I do not (yet) suffer from this aspect of the disease, or else I could not dictate this text.