So, this is roughly true, but it has huge problems: * It offers no way to measure what the baseline for reality might be. This is because there is no way to do so. * The narrator assumes there is a baseline to reality that can be measure, and of course, it is the narrators world view that is the baseline for reality. Which, of course, cannot be proven. This video is basically a childs explanation of the human survival mechanism. Human survivaly is orders of magnitude greater in social groups than alone. All humans have the fear of being left out of the group built into their genome because our survival depends on the survival of the group. As social creatures, our core psychological basepoint is the need to negotiate temporary and permanent alliances with members of different tribes. What we do is exchange our physical labour for onboarding the belief systems of our allies as the transaction of survival. In other words, all humans believe what their allies believe because it is the transaction of gaining an alliance to aid in your survival. Or to put it another way, humans cannot tell what is real from what is not real and therefore psychosis cannot be reliably defined. The only baseline humans have is something along the lines of do I have enough friends to survive, amy i comfortable, where do i need to go to survive better. Nice video, but awfully naiive.