 He started this way of thinking with the notion that the way we understand the world is largely a sensory experience. And so my perception of the world is going to be a little different than yours. And my senses are also attenuated by my life experiences, my culture, my language, all these different things. So I have my own unique perspective. And so because I'm the one doing the perceiving, my perception is equally valid and true for me as yours is for you because you're the one doing the viewing. So I can't argue with your experience.