In the movie The Matrix, the person in the leading role realizes that he has been living in an imaginary world in a glass cover formed by the electrical signals given to his brain. While he believes that he is a computer programmer, he is sleeping in the place shown above. What he believed to be his life existed only in his imagination.

     In the movie, computer cables are connected to the brain of the person in the leading role, and some programs are loaded to his brain through the electric cables.

     After the computer program is loaded to his brain, this person who is actually sitting in a very different place on an old chair in shabby clothes sees himself in a totally different place in totally different clothes. His unkempt clothes are changed, his hair is longer. He has a totally different outlook from his image sitting in the simulator chair.

     This person does not want to admit the truth under the impression that what he sees is too close to reality to be a dream, and touches the armchair and asks "This isn't real?" The answer he receives is "What is real? How do you define real? If you're talking about your senses, what you feel, taste, smell, or see, then all you're talking about are electrical signals interpreted by your brain."