Comment by the_other

> is that a definition of schizophrenia?

In my limited experience interacting with someone struggling with schizophrenia, it would seem not. They were often resistant to new information and strongly guided by decisions or ideas they'd held for a long time. It was part of the problem (as I saw it, from my position as a friend). I couldn't talk them out of ideas that were obviously (to me) going to lead them towards worse and more paranoid thought patterns & behaviour.