It doesn't matter if you consciously know something is false if your brain still presents it as true.
Think anxiety. Or like on the movie A Beautiful Mind (I know it's a movie but it happens IRL too). Or being under the influence of some psychedelics (you know you're under the influence but it still feels like reality).
Think anxiety. Or like on the movie A Beautiful Mind (I know it's a movie but it happens IRL too). Or being under the influence of some psychedelics (you know you're under the influence but it still feels like reality).