A prison is a trap for catching time. Good reporting appears often about the inner life of the American prison, but the catch is that American prison life is mostly undramatic—the reported stories fail to grab us, because, for the most part, nothing happens.

One day in the life of Ivan Denisovich is all you need to know about Ivan Denisovich, because the idea that anyone could live for a minute in such circumstances seems impossible; one day in the life of an American prison means much less, because the force of it is that one day typically stretches out for decades.

It isn’t the horror of the time at hand but the unimaginable sameness of the time ahead that makes prisons unendurable for their inmates. The inmates on death row in Texas are called men in “timeless time,” because they alone aren’t serving time: they aren’t waiting out five years or a decade or a lifetime. The basic reality of American prisons is not that of the lock and key but that of the lock and clock.