I genuinely wonder what is cheaper. Building a couple of new prisons, or housing these convicts for the extra 30 years for the murders inside the prison due to

I genuinely wonder what is cheaper. Building a couple of new prisons, or housing these convicts for the extra 30 years for the murders inside the prison due to over-crowding. I don't understand multiple occupancy cells in prison. Dangerous convicts are in prison usually for something unpleasant or violent that have done to another human being. Putting them side by side in a hen coop sounds like absolute stupidity. Unless of course the whole plan is to have them slowly kill each other off to remove the problem prone from society.