Yeah - Rehabilitation needs to be taught; For some, they will learn through it to change for the better by learning how to cope with tasks, so and on.
That's just like saying if you were to spank a toddler without an explanation - the more the toddler does not understand why he was received the punishment, the more the toddler will lash out. So, in order for those who were incarcerated; it takes a lot more than an explanation to rehabilitate.
