What we think of as reality is just shadows of shadows, internal reconstructions of sense data fed imperfectly into electrochemical processors within the brain and imperfectly rendered – “imperfectly” depending on your sense of perfection, of course. The point is more that it’s a rendering, and the rendering is no the thing rendered. And all the renderings and things rendered are impermanent – as the Buddhists say, “form is emptiness, emptiness is form.” Emptiness is another word for impermanent, and unreal in the vernacular sense of reality. I was thinking about this earlier today, and thinking how computer networks are more of the same – imperfect data imperfectly rendered, but feeling substantial and real despite its (their?) illusory nature. I can’t help you see any of this if you don’t already see it, but it’s rather exploded in my own thinking.