Does the world around you appear inconsistent with your understanding of reality? Let me suggest questioning reality. Try and have a look behind the curtain. Is that the "great and powerful OZ" I see there? "Ontology and Epistemology for Dummies"opened in his hands? Regrettably doubtful, but definitely in the probability distribution.
The "truth" is I cannot reliably say what is real. Describing my perceptions and having another, presumably independently operating, human validate them provides me with a verified shared delusion, but not something definable as reality. Wake up Neo.