Every 1 person out of 10 in the world is left-handed. In many parts of the world, it is very usual to teach children to make habit of using proper hands for certain actions. So, why we have been seeing left-handed people? Even in many languages, the word right stands for correct and good where the word left represents a wrong or evil. If the being “left” is wrong in many cultures then why we see left-handed people among us. Even the Archaeological survey has proven that left-handed people existed in our society since 5000 years ago.
If people think that it just the random selection or choice that completely depends upon people. Well, it’s not a choice for a person to be right-handed or left-handed. It can be predicted Hobbit depending fetus position in their womb. Some believe that it because of genetics, yet their examples/ proof of dissimilarity between twins. On the other hand, statistics have proven that that being right-handed or left-handed can also depend upon your parents that either both are left-handed or not.
What is the reason behind this, why evolution has produced and maintained this small amount of left-handed people over the course of 5000 years?
There are several theories which explain how the person left-handed or right-handed. it actually reflects the balance between both throughout human evolution. As the left-handed smaller in proportion, it turns out to be an advantage for them due to their fighting hypothesis.
Competitive and cooperative nature role played a vital role in human evolution. The competitiveness is turned out to be an advantage for the left-handed. on the other hand, cooperativeness doesn’t navigate in the favor of lefties, for example, the majority of an instrument of everyday life has been designed according to right-handed because a portion of a population is right-handed, because lefties require more time or face more problems getting used to these things. They turned out to be less successful in the cooperative world.
This is how evolution has played out competitive and cooperative simultaneously over time and balanced it.