EDI is a system that requires a certain level of human development, taking into account his experience and ability to learn what happens to others.
In other words, a person learns to adapt a way of expressing his feelings to the circumstances in which he is located. But to be able to perceive and understand their own emotions, it is necessary to have an adequate model of mental state.
The model of the mental state is a phenomenon that was considered a distinguishing sign of the human race, which distinguishes it among other species of animals, thanks to which the person is able to understand that the other has their own desires and ways of thinking, which Help to predict its behavior; Deception is the simplest way to prove this theory.
If I can deceive another, then I know what that person would think, and expect to benefit from it.
It was believed that such behavior is peculiar only to people, until it has been proved that it is also demonstrated by the higher primates, close to us in evolutionary terms.
There are now many examples of "gimmicks" in the animal world, but not all of the fauna, in zoology and biology, and that is enough to prove that they have a mental state model.
As we can see, the individual is believed to have a model of mental state when he is able to deceive others, either for his own benefit or to avoid any harm. But it is also recognized that this model exists, if the individual is able to determine when it is trying to deceive.
One of the most useful abilities for development in society is the ability to identify false beliefs in themselves as well as in others.
This ability is considered to be developed in a child, when he can define his own thoughts and thoughts of other people and compare them with reality, realizing when he is deceived.
People develop it in the process of socialization, through which we can identify the non-verbal language of others and adequately decipher it to understand whether they are trying to cheat, or to deceive others themselves.