The origin and reasons of the ancients domesticated animals, why are no sparrows domesticated?

2020-01-06 | Scientific Beauty Boy original |

Ancient people domesticated animals can be divided into three uses: for energy sources, for transportation, and for labor.

Humans are the descendants of Homo sapiens. In the process of evolution from Homo sapiens to Homo sapiens, humans mainly go through four stages: Southern ape, capable person, upright person, and sapiens. The efficiency of energy acquisition at each stage gradually increases.

Southern ancient ape uses natural tools, but does not transform or make tools, such as digging up blocky rhizomes with picked stones.

1.8 million years ago, the capable man was born. Biology classifies the able man as a human, which means that the capable man is the first species of ape to transition to a human. Compared to an ape, an able man has a significantly larger brain capacity and canDoing things that are slightly more complicated than apes. For example, turning natural stones into hammers, sharp pieces of stone. It further improves the efficiency of energy harvesting.

Before evolving into an upright person, humans have learned to use fire. The efficiency of human energy acquisition has been further improved, which can enable better and faster absorption of energy. For example, roasted meat and plants are more conducive to gastrointestinal absorption. Fire alsoIt can be used to deal with beasts, increase temperature, and reduce energy consumption. Homo erectus who entered the Stone Age, with the improvement of energy efficiency, has the ability to migrate outwards, and went out of Africa to start a global war.

When humans evolved into Homo sapiens, hunting and gathering for several hours a day can meet the energy required for a day. When the wolf meets humans, humans open the door from the Stone Age to another era.

collaboration

In the beginning, wolves and humans were not domesticated. In the bitter cold zone, there were always hungry wolves. When humans found prey, they would always take the essence of the prey and throw away some unnecessary scraps. Instead of hunting for a hard dayIf you do n’t have the prey, it ’s better to follow the humans and eat some leftovers. When humans find it, they throw some meat to the wolves waiting in the grass. Over time, humans and wolves have gained trust from each other and started to help humans round up their prey., Expelling the beast, looking around humans, and now humans have a cooperative relationship with wolves.

Improve efficiency

Stone tools make human food ample source, and there is no loss to the wolf. It can improve hunting efficiency with the help of the wolf, and because the wolf is around the human camp, it can relax humans' vigilance at night and protect humans.. Humans are beginning to realize that animals can be used and wildness can be changed. Humans have discovered a way to improve efficiency in addition to tools.

domesticated

Humans began to cultivate wolf cubs, leaving only obedient and meek. After breeding from generation to generation, slowly the wolf evolved into a dog and became the first species domesticated by humans. Since then, humans have entered the animal husbandry industry.The road also laid the foundation for farming.

Homo sapiens populations continue to multiply, but the energy source of nature is fixed, and the discovery of grains has opened up a new energy source path for human beings. Human domesticated cattle are used for farming and domesticated horses are used for transportationGrain goods, domesticated pigs, sheep, chickens and ducks to provide energy, and to accumulate fertilizer for farming. Some dogs are qualified to work as shepherds, and they can also look after the nursing home.

Entertainment

After the human food has a stable source, social division of labor began to appear. Some people have leisure time and have developed civilization. At the same time, the purpose of human domestication is not limited to uses, and bird breeding and bird play have begun to appear..

Sparrow

We find that human beings have been solving the problem of energy source and efficiency improvement from ancient times. Although sparrows reproduce fast, from the point of view of energy sources, sparrows have too little energy. In modern people ’s words, eatHe didn't bother enough.

From the perspective of efficiency improvement, there is no flash point for sparrows. For example, the delivery of pigeons can improve efficiency, and it has much more energy than sparrows, and it is easy to be domesticated.

From an entertainment perspective, the sparrow is not a unique rare species, nor does it have beautiful feathers, or can learn the tongue like a myna, the call is not clear enough, and there is no market competitive advantage.

Not every animal and plant can be domesticated in nature, and not every animal and plant is worth domesticating. The key depends on human needs.


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