It’s pretty much fact that our Meow Cat shirt do a lot of guesswork. That’s why a show like brain games was so popular it showcased our mind’s inability to accurately present our environment as it is because it simply cannot handle the workload. It guesses. And besides that, there is so much more information and stimuli out there in the world that was we cannot even perceive because of limitations our sensory organs. The rest of the spectrum of light, for example, smells inaudible sound waves and so on. You’re confusing perception with the dissemination of variables in the environment. No one here is saying that reality, a real physical tangible world, doesn’t exist. He’s simply saying that our perception of it is hallucinated, at least in part. And that’s absolutely true. It is.