From the Guardian:
As kids, many of us imagine having superpowers. An avid comic book reader, I often imagined being invisible. I never thought I would actually experience it, but I did.
It wasn't in a parallel universe – although it often felt that way – but right here in the Empire State, my home. While serving time in New York's prisons, I spent 2,054 days in solitary and other forms of isolated confinement, out of sight and invisible to other human beings – and eventually, even to myself.
After only a short time in solitary, I felt all of my senses begin to diminish. There was nothing to see but gray walls. In New York's so-called special housing units, or SHUs, most cells have solid steel doors, and many do not have windows. You cannot even tape up pictures or photographs; they must be kept in an envelope. To fight the blankness, I counted bricks and measured the walls. I stared obsessively at the bolts on the door to my cell.