In what kuckuckfairyland is this Mr Bryant living in? It is demeaning to ignore reality and pretend. It reminds of of a trip to Charleston SC several years ago, and a visit to the "Slave Market". I was told by a friend that slaves weren't sold there, but sold their handicrafts and art work there. Be real!
As administered, lethal injection has a strong potential for causing severe pain. Accept that. As practiced, lethal injection masks the pain by a general paralysis-- or at least is supposed to. In the case of Mr Diaz, the pancuronium didn't work completely. We know that Kalium Chloride (KCl) can cause severe pain in contact with tissues; that is also a given. With Mr Diaz, he had severe burns in both arms. The burns cause pain. I rest my case.
Forget about the overwhelming evidence, and take the word of someone with a vested interest in keeping lethal injection as a way of state sanctioned murder...And cigarette smoke does not cause cancer. We know that because the cigarette executives-- who do not smoke themselves-- said so. And the Earth is flat...
G M Larkin MD