That was not the question I was responding to, which made no reference to the length of sentences. It argued that prisons were not an effective deterrent (i.e.

That was not the question I was responding to, which made no reference to the length of sentences. It argued that prisons were not an effective deterrent (i.e.: at all), moreover there seems to be a school of thought that we should never punish crime, at all. I said nothing about adding ten years to sentence lengths. I don’t know, and don’t claim to know what the optimal length of sentence (or other punishment) is, except that it is not zero.