Rehabilitate is to get one back to a state at which they were once in before. Now in jail that is the goal for the institution. But it is a flawed goal. Why? Well, if they rehabilitate a person who is in jail back to a state of mind they were once in, all they are doing is reinforcing the state of mind that got them locked up to begin with. What the institutions have to do is habilitate a person. Which is to break down their way of thinking, of navigating life and to rebuild a new way of thinking and navigating life. To even give a person a better chance of changing their life in the free world when they get out.