I've said it before, and I'll keep saying it: if the purpose of prison is to rehabilitate people, then we're going about it in a very strange way. Lock people away in a cell for a decade, deny them a lot of basic human rights (like books) then when they're good and messed up in the head from it, let them lose on the public. If they re-offend, well, that's clearly a sign that they are just a bad person . Best lock the…
You imply that rehabilitation is the only reason for prison and that there are proven methods of rehabilitation.
Rehabilitating people is hard and we don't know of any great ways to do that. Removing criminals from society is easy and straightforward.