Pain is not an afterthought, or God’s great goof. Rather, it reveals a marvelous design that serves our bodies well. Pain is as essential to a normal life, it could be argued, as eyesight or even good circulation. Without pain, as we shall see, our lives would be fraught with danger, and devoid of many basic pleasures. But Must It Hurt? My appreciation for the engineering aspects of the pain network traces back to the beginning of my friendship with Dr. Paul Brand. I came across his name in 1975,