Why has humanity not yet found aliens?

Countless theories have been put forward to explain why until now we have not found it alien.We even emit a lot of radio signals into space in an effort to find life beyond Earth, but so far everything has only stopped at hypotheses.Theo “Dark Forest” theory in the work of the same name by author Liu Cixin: All living things possess a great survival instinct, while we have no way of knowing the intentions of any other civilization. outside.And since there is no way to guarantee that communication with any civilization other than space will take place in peace, the safest option would be to kill the aliens before they attack. we.Besides, the civilizations out there, if less developed than Earth, will also find ways to hide themselves from being discovered by humans, because they are afraid that humans may attack and destroy them.“The universe itself is a dark forest. All civilizations are hunters, trying to quietly move forward like ghosts. They even have to be careful to pay attention. These hunters are always careful, because the forest is full of others like him If he spots anyone – his only option is to open fire and destroy them. ..”“…Whoever shows up first will be annihilated in an instant. That is the panorama of cosmic civilization. It is also the explanation for the Fermi paradox” – Excerpted from “The Forest” dark”, Luu Tu Han.Any civilization that detects and uses radio waves has put itself in danger and may be destroyed by a more developed civilization.So are all our efforts to signal out into space in vain when it may be putting humanity in danger? Will when alien civilizations can locate humanity, will that affect the survival of all humanity?All of these are still controversial open-ended questions. As for Liu Cixin, in his novel “Dark Forest”, he believes that when the existence of an entire planet is put on the scale, it is understandable if the civilizations out there consider it. Interplanetary communication carries far greater risks than benefits, and that is why they have chosen to remain silent.According to experts from the US Space Agency (NASA), they have used the so-called “Great Screening” hypothesis to explain why humans have not encountered so far. alien life.This hypothesis holds that many extraterrestrial civilizations have existed long in the history of the universe. However, all of them made themselves extinct before they had a chance to come into contact with each other.>>>Watch more videos: Alien races have visited Earth. Source: Kienthucnet.

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