The first racial illusion. The way we get external information is through the five senses, sight, hearing, smell, taste, touch, and vision occupies more than 80% of the amount of external information that can be obtained. Bats do not have eyes, they acquire external information by emitting ultrasound and then receiving ultrasound echoes, just like a radar. In the same cave, people and bats receive external information in different ways, and the appearance formed by the same cave that bats and we see must be different. But one cannot say that the bat's is an illusion ours is the truth? There is no way to tell. For the form of your perception determines the kind of representation of the object. The object referred to is never the object as it is, but the shaping of the form of our perception.
Second, the cave illusion. Plato once talked about a human cognitive dilemma, said that human beings are like being locked in a cave, the cave can not see the light outside the cave, the cave is only to see the light and shadow cast in the cave sprinkled on the cave wall of the illusion, which is called the illusion of the cave. This is called the cave illusion. It is the Chinese frog at the bottom of the well, which sees only the heaven and earth as the mouth of the well, and concludes that the sky is the mouth of the well, and this conclusion is invalid. So it is important to understand that perception is not infinite but finite, and therefore inevitably falls into the cave dilemma.
Third is the market illusion. In a flea market, different merchants give make different sales pitches, different presentations. We are building our understanding of the world in the midst of a diverse system of interpretations, not so much a system of understanding as a system of noise interference. Isn't the market illusion, human perception, a mixture of all the noise of this big market?
The fourth is the theater illusion. For example, go to the theater or watch a movie. The movie unfolds and the logic of the story is very fluid, but the story is not unfolded before the movie drama before the opening of the author's ending has long been given. What you see is nothing more than a predetermined logical process expressed on the theater. It is important to realize that all of our perceptions of the world are within the theater illusion. For example, if you believe in the I Ching, then you think that the world unfolds according to those symbols of the I Ching, for example, if you have the last name of God, the world is created by God and is called Creationism, for example, if you believe in science, the world unfolds according to that model of science, and for example, if you believe in Buddhism, the world is the one that the Buddha said it is. This is the world as we all see it, and it must be the unfolding of that idea that you have pre-existing in your mind, isn't it? If you were a Marxist, wouldn't you explain human civilization, human history, and the world as a whole as fully unfolding according to that material dialectic and historical dialectic of Marx? You can refute anyone and always occupy the truth. But this truth is nothing but a Marxist system of ideas. It is called a scripted illusion.
All of us are beyond the confines of these four mechanisms of using our intellects, and therefore the said world must be an illusion, though for the common man you actually don't realize it is an illusion, that's all.