Solitary confinement isn't really solitary most of the time. It's far less pitch black rooms with a slat you slide a tray of slop into, and more of a lights always on, talking to your neighbor through the vents/shouting chess moves at each other.

Not that it isn't inhumane in its own way, but many people seem to think that you're basically sensory deprived and that's just not the case.

We can still hope