> Prison exists to ensure the people who are dangerous or detrimental to society remain excluded from roaming in the streets and causing more trouble

Yeah, and this has always been the primary goal of Prison. Prisons were never made to be places to reeducate people. It was always, at the beginning, seen as both a practical "exile" form society and a form of punishment. And I maintain that your reply was indeed a strawman, because it was not at all answering to the point I raised, no matter how you look at it, there was no implication that Prison was fair in any way in my comment.