This pain was all-absorbing. I was amazed by the relentless, mind-controlling quality of it. During the hours of agony that I had already endured and was yet to endure, I attempted to concentrate on my surroundings, to think of other things, to interact with the people around me, even to do simple multiplication tables in my head, but the pain flowed into all the compartments of my consciousness like molten steel into the fissures on a cracked crucible.