This vaguely relates to a theory about human thought: that our subconscious constantly comes up with random ideas, then filters the unreasonable ones, but in people with delusions (e.g. schizophrenia) the filter is broken.

Salience (https://en.wikipedia.org/wiki/Salience_(neuroscience)), "the property by which some thing stands out", is something LLMs have trouble with. Probably because they're trained on human text, which ranges from accurate descriptions of reality to nonsense.