I teach reading skills, like 'ya know, first grade stuff, in jails and prisons in California.  Its not been a bad deal.  And lots and lots of people in jail, signed stuff that in no way, shape, or form, could they have understood.  I'm damn sure about that, and - not to draw too fine a point on it - that they are all that damn innocent either.  They are bad people.  Not nice.
But, then again, to me, they are pretty nice guys.  So
You never know.