[zachwooddoughty]

From the article:

>The offenses that landed them in solitary? Most often, it was evidence that they were "affiliated" with a prison gang, whether or not they had broken any rules.

Solitary isn't being used as a last resort for people who have killed previous cellmates -- it's being used for all sorts of things.

I think solitary makes sense for people who are already unable to coexist with other inmates, but that doesn't seem to be the main use at the moment.