# Is it possible to meet your double on Earth?

Have you ever thought about the fact that somewhere on Earthis there a person who is exactly like you? He may dress differently, speak a different language, be a little older or younger. But under certain circumstances, look almost exactly like you. We often meet people similar to our acquaintances, even in the same city. And no one can rule out the fact that in different parts of our planet they can live two people identical in appearance... That might meet someday But what are the scientific odds of this happening?

Is it possible to meet a person who looks like you as two drops of water?

According to research by scientists, the existencereal twins (apart from twins) on Earth are extremely unlikely. Experts from Australia studied a lot of statistics and determined the likelihood of two people with 8 identical facial features.

Do doubles exist in our world?

They found that there is a small chance that there are a pair of doubles in the world - people indistinguishable from each other. This value, if we take into account 8 facial features, is one to a trillion... The possibility of the existence of twins is not completely excluded, but, obviously, it is almost impossible to meet a person who resembles you like one drop of water to another.

To come to this conclusion, biologist Tegan Lucasfrom the University of Adelaide in Australia and her team studied 4,000 different individuals from the US military database. This is data that was created by the country's army to track the physiological changes of soldiers. Biologists compared these people and tried to identify at least two with 8 common facial features. However, they did not say which traits were used in the study.

The team calculated that the probability thatsomeone will look exactly like another person is about one in a trillion. This means that there is a certain mathematical possibility of the existence of twins, but it is extremely unlikely.

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The Infinite Monkey Theorem

The research results can be compared with “the infinite monkey theorem". She claims that if an abstract monkey is locked in a room with a typewriter, then, striking randomly on the keys of the typewriter for an unlimited time, sooner or later the monkey will type any given text in advance.

Combination "Sooner or later" in this case means that the probability of a given event tends to unity as time tends to infinity.

When you think about it, a monkey has a 1 in 33 chanceto type correctly the first letter of Dostoevsky's "Idiot". Not so bad. However, on the second letter, the probability decreases to 1 in 1089 (33 x 33), and by the end of the fifth word (22 letters), to one in five quintillion. When you multiply the probabilities by each other, the chances of this happening disappear very quickly.

So why do people keep telling you they've seen someone like you when it's statistically unlikely?

How people differ from each other

The problem here is that people can perceive faces differently... Even if two people look different,people can perceive them as one, because at the level of the brain, they compare the whole face, and not each of its individual features. This explains why many of us think that identical twins look exactly the same when in reality they usually have many differences.

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Although man is not a true doublethe other, we may think it is, because we are not able to define the smallest dimensions of his facial features, as the team did in their study. It may seem to some that there are many people similar to each other in our Telegram chat, but in reality this is not so.

Finding a human double is almost impossible, as well as a double of the Earth in the universe.

In other words, it is likely that you havea doppelganger that your friends think looks exactly like you, but if you analyzed its features from a scientific point of view, it would hardly get a 100% match.

The group of scientists also believes that sincethe likelihood of finding a real human doppelganger is extremely low, face recognition can be as good a tool as fingerprinting or DNA matching when searching and catching wanted criminals.

The use of video surveillance systems for security purposes is expanding, there are more and more cases when criminals "light up" their faces at the crime scene, - says Lucas... At the same time, they try not to leave DNA traces or fingerprints at the crime scene.

The man on the left spent several months in jail before finding the true culprit (right). He was misidentified on the street

The team has demonstrated that using 8 facial features, she was able to accurately match the face captured onCCTV camera, with a real suspect. This is probably why they did not disclose the method of their research - so that the criminals could not use the obtained data.

There is good news in all of this. The likelihood that your double is running and committing crimes incredibly small... Even if your friends or family may think you look the same.