Are humans lonely?
At present, we are indeed lonely. Although most people firmly believe in the existence of aliens, there is no evidence to prove that point, and we have not even found any clues about the existence of aliens, so the description of aliens is just conjectures and assumptions.
For example, the "Drake equation" about whether aliens exist: N = R* × fP × ne × f1 × fi × fc × L. This equation is used to measure the possibility of aliens' existence. Each letter represents the probability, quantity or proportion. For example, R represents the number of stars in Milky Way .
is calculated using this formula. There are thousands of cosmic civilizations in our Milky Way alone. Humans can contact them, and they can also contact humans, but at present, there is no connection at all.
and Fermi has long expressed his confusion in one sentence: Where have they all gone? This is indeed a good question. Even Fermi himself did not expect that his simple question would actually arouse heated discussions among everyone, so the subsequent " Fermi Paradox ".
There are many explanations about the Fermi Paradox, one of which is the large filter theory.
Large filters may occur at any stage of life's birth. Biology tells us that mitochondrial is the source of cell power. Why do you say that?
Because mitochondria were only independent bacteria at the beginning, at some accidental moment, a single cell body swallowed one of these bacteria. The two combined to generate additional energy, allowing cells to develop in a more advanced form, which led to the more complex life form in the future.
But the probability of such a thing happening is very small, and it is unlikely that it will happen again.
or the human brain is also a big filter, because humans' intelligent species have only appeared once, and life on other planets may not need to evolve intelligence to survive well.
So what should we do if the large filter is in front of humans?
In fact, this possibility is very high, and a large filter is likely to have really appeared in front of humans. If you learn more about the history of human civilization, you will understand how lucky we are.
Humans overcome almost all obstacles, obstacles that other species cannot overcome. But the fact may be far from this, and there are still many obstacles waiting for humans to overcome.
In today's human civilization society, any unexpected event may end human civilization, such as nuclear energy, climate change, violent cosmic events, etc.
From this point of view, discovering alien life may not be a good thing, but an extremely bad signal. Because if the vast universe was always silent, it would mean that humans may have crossed the big filter and all other lives failed to pass some of the challenges humans experienced!
And if humans discover alien civilizations, but not many alien civilizations, it may very likely mean that some kind of large filter has come to humans.
At least so far, we are lucky. We have not discovered any alien life, but at the same time, it means that humans are likely to remain lonely!
