The controlled hallucination process is also a hypotheses-prediction-observation correction learning process. Brains can learn brand new concepts by generating new hypotheses about the world, making predictions about the sensory input, and correcting according to observation (actual sensory input)

Human perception is a controlled/controlling hallucination process in which the brain 1\. constantly generates hypotheses of the world around and 2\. makes predictions about incoming sensory signals based on these hypotheses 3\. correct hypotheses according to differences between observations \(actual sensory signals and predictions\. \)

Suggested in [Being You](https://www.anilseth.com/being-you/), the perception process is a top-down "controlled hallucination." The brain predicts conceived "things" it will see and then "the sensory input" caused by them. Then the brain verifies or corrects the conceived things with the sensory input it actually receives.