Agree with your point but is there a reason you used the Unibomber as your example? He was a math professor at Berkeley, surely if anyone in prison can produce good research he probably can...
I think the point was that you probably couldn't rehabilitate him by teaching him maths.
Damn good reason to teach him some philosophy then,
Pretty sure he already has a path there...
I used the Unibomber as an example because, like solveit said, lack of an education or jobs available to him probably wasn't part of the reason why he chose to commit crimes (out of desperation).