It has long been noted that even though people are physiologically similar in principle (for example, they have two arms, two legs, two lungs, one heart, and do not have scales, a tail, horns, hooves, wings, feathers, etc.), they differ from each other in character, qualities of personality, life algorithms, values, preferences, and abilities. And, sometimes they differ cardinally On the other hand, there are people, who are similar to one another. This question remained a mystery to researchers for a long time, but with the discovery of the Catalog of human population it was resolved. It turned out that the reason is that humanity as a biological type is divided into subtypes.
It is exactly the same as it is arranged in the world of animals, birds, fish, plants, etc. Among birds exist hummingbirds, and eagles, and sparrows, and ostriches; among fish there is a shark, and a carp, and a guppy or a dwarf pygmy goby; among snakes there are anacondas, and vipers, and grass snakes; among dogs there are huge Great Danes, and miniature Italian Greyhounds. And, as it is known, anacondas do not live like vipers, sharks like carps, and Great Danes like Italian Greyhounds—they all lead different lifestyles, have different qualities, functionalities, and abilities. As it turned out, it is the same within the biological type Homo sapiens.