Assuming that computer science books are banned because they could be used for getting access to unauthorized systems within the prison, they should also ban bo

Assuming that computer science books are banned because they could be used for getting access to unauthorized systems within the prison, they should also ban books on plumbing because a wrench could be used to hit somebody, or books on math as well because what if a prisoner finds a way to create a quantum tunnel outside of the prison just with some simple equations? I'm consistently surprised by how idiotic our prison system in the US is. It seems to have two mantras: "the more the merrier" and "punish, not correct." I guess that's what happens when you have something as dumbfoundingly stupid as private prisons.