You can't call a piece of fruit an apple when you want to eat it and a dandelion when you don't want to eat it. It's the same sort of fruit no matter what your intentions toward it. And how strong is the case for a categorical distinction between brains that know reality and brains that don't? Is a non-reality-recognizing brain as a foot, say, is from a brain? This seems unlikely. Recognizing the agreed upon version of reality is only one of the billions of brain jobs.