Without feeling, there is no perception, and perception gives meaning to feeling. For example, visually, we see many worlds, but not many. When we close our eyes and open them again, the world is presented to us at the same time, but what we "see" is what we want to see, and what we care about is what we are interested in. Seeing is the input of feeling, and seeing is the output of perception. We look at ambiguous graphics and three-dimensional maps; See two different graphics, three-dimensional graphics. Most people will perceive it in the same way.

Psychologists put forward two theoretical explanations about perception: Gestalt theory and learning-based reasoning theory.

Gestalt theory emphasizes how the innate structure of our brain will affect our interpretation of stimulus information as meaningful perception.

Gestalt psychologists have found that the most basic element in the process of perception is to divide perceptual experience into graphics and background. Graphics are simple patterns that attract our attention, and psychologists sometimes call them gestalt. Everything except graphics becomes the background, on which we perceive graphics. For example, a melody becomes a graph on a complex chord background, while a delicious Italian sausage pizza becomes a graph on a background composed of cheese, stuffing and bread.

? The second powerful perceptual integration process discovered by Gestalt psychologists-approach, makes you regard the incomplete figure as a whole. This process is completed by providing missing parts, filling in blanks and speculating hidden objects. So, if you see a person sticking out half his head from behind the wall, your mind will automatically fill up with this person's face and the body hidden behind the wall. In short, even in the case of missing parts of objects, human beings are born with a tendency to perceive stab invitation as a complete balance. The brain's ability to perceive objects with incomplete stimuli forms the perception of subjective contours and closures.

? Learning-based reasoning theory emphasizes how people use previous learning to explain new sensory information. Once the background is clear, people, things or things that may be encountered will be expected. For example, it is normal to meet colleagues at work, and the first reaction to meeting teachers in high school may be an accident.

Perceptual differences make us unique individuals. In this unpredictable world, there is neither truth nor lies; Everything depends on the color of the lenses we use to see the world.