Yeah, I was just pointing out what can happen when the system fails. A specific kind of auditory hallucination where you're talking to yourself and don't know it (perhaps the feedback connection from Brcas area is broken.. So you hear stuff being generated from Broca's area, but don't get the sensation of generating it yourself.)
Anyway, I recall that Broca's area is active during schizophrenic auditory hallucinations. It's also associated with speech generation in general brain function.