Pelican Bay Prison, Calif.—Twelve years have passed since I entered the Security Housing Unit (SHU) on gang validation. This year I turned 53 years old. My cognitive skills over this past decade have taken an odd turn. The deterioration is discernible. When I first arrived I was attentive and, if you’ll excuse the expression, bright-eyed. I thought I could beat this thing, whatever this thing was. I confess—I was ignorant.