Face Like Twins, Though Not You. Why can you?

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Medical Video: Twin Strangers - Unrelated Identical People

Have you ever heard comments from people around you, like, "Looks like I saw you at the supermarket?" Or, "I just passed out with someone who really looks like you!" In fact, you have never visited the supermarket at all, or even you actually don't have biological twins. Well, you know?

Identical twins are different from father-mother, is it possible?

In theory, each human being has at least seven twins living in various parts of the world without us knowing it, and perhaps, most of us will never meet our 'duplicates'.

According to Daniele Podini, forensic scientists and facial recognition experts at George Washington University, although the phenomenon of doppelganger aka the face of 'twins' without blood relations cannot be proven by science, he acknowledged that statistically, the possibility of this phenomenon is undeniable. The reason is the total population of humans and the fact that human genetics work randomly.

Although human features and characteristics vary from other animals, our genes do not. In fact, humans are not completely genetically diverse. So in the end, these numbers that form genes dictate certain features that will represent you and will combine randomly

But this does not mean they are actually duplicating you. There is a slight bias from that claim, because each person's perception is based on personal experience.

The work of the brain in building facial perceptions

Face recognition plays a key role in human interaction. When trying to recognize someone, the brain will work like a person scanner that scans the person's face and changes every aspect of his face into a code.

The brain's facial recognition system is an effective way for you to be able to distinguish one face from another, with one exception. The way you recognize other people's faces may begin in a certain order: eyes, mouth, nose. The size and placement of the person's eyes, for example, will determine how you see the rest of his face. Others may interpret the opposite way, for example, recognizing faces starting from the nose, mouth, eyes. The two brains get the same signal, but the location of the random feature makes the brain focus on one feature (nose) rather than adjusting the perception of the rest of the face.

This shows that the perception of your face in the eyes of one person is not necessarily the same as the views of others on your face. So if according to someone you face is very similar to his office friend, not necessarily others will think the same.

Genetics and the environment affect the doppelganger?

"You might find someone who lives thousands of kilometers away who looks like you, but if you look beyond your ancestral background, you will find that you and your 'twin' might be from the same place. Not surprisingly, if you come from the same ancestral background you might find common characteristics - stature, eye color, even temperament, "said Richard E. Lutz MD, Associate Professor of Pediatrics and Clinical Geneticist Munroe-Meyer Institute at the University of Nebraska Medical Center.

The same is true of the personality resemblance that a doppelganger might have. Lutz argues that, while the environment (such as different eating patterns, different physical activities, sun exposure and regional temperature in both different places) can make personalities between doppelganger different from one another, but culture has more contribution in this case.

He said, however, genetics will still outperform all differences made by the environment. Your genetics is the dominant factor that affects your appearance and personality, while the environment or culture affects the rest.

It's possible someone out there who looks and acts like you - and that person might be closer to you, both from the location and background of the ancestors. But, back again, the process of facial recognition, something that is very critical in life to be able to distinguish between friends and enemies, is something we think works very definitely. Even though it's not like that. Many other factors can affect our "similarity" with one another that is not accounted for by the brain when processing a person's facial features.

Face recognition is a complex and interesting argument why the existence of the doppelganger so far is still unclear.

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Face Like Twins, Though Not You. Why can you?
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