> If the condition is not currently treatable, you can isolate the person from society - but this will already win you all the safety you can get, so there's no

> If the condition is not currently treatable, you can isolate the person from society - but this will already win you all the safety you can get, so there's no point in punishing them further. We have to remember here that some prisoners are a danger even to their cellmates--I've heard of some who threatened to kill any cell mate, then did so. For that population of violent people who are a danger to everyone, isolating them could be both harmful to the prisoner, but the right move for society. Though I suppose it's an open question whether executing such prisoners would lead to less suffering.