There is an opinion that a person is an underdeveloped animal, or rather an immature monkey. The essence of human mutation is that he stopped maturing, remaining a child. This explains a lot about human nature, its imperfections and the constant desire to fall into childhood. The baby monkey and the man are very similar at first, but then the monkey matures further, and the man remains in the same stage. More in addition, there are facts indicating that the stage of human development is the embryonic larval stage, that is, it should not even be born yet.
What is the difference between a smart animal and a stupid one? A stupid animal needs to be kept on a leash, and if you let it go, it will run away, get lost and die somewhere. Smart animals are more independent, they can be released to the street, and then they will return. The criteria of people's minds are about the same.