If extraterrestrial civilizations contact Earth, can we understand their messages?

If this alien planet is a thousand light-years away, then such a connection does not make sense at all, just the meaning of informing. That is, we are able to know that there are extraterrestrial civilizations without the meaning of communication. If extraterrestrial civilizations develop to a certain height, they will definitely not send such a message, because they will have the same fear and the same fear of the threat of higher civilizations.

If they are fortunate enough to receive such information, then they are at the same stage of civilization as us, not higher. We can understand the information of the same stage of civilization as us, and such information must start from the most basic mathematical logic.

<> if a highly developed extraterrestrial civilization discovers the Earth, what will humanity do? Have you thought about it? If an extraterrestrial civilization can reach the earth, then it has been shown that their technology is much more advanced than ours, and the degree of civilization and technology must be incomparable to us.

What I think is that there are two other possibilities for a higher level of civilization than us, that is, a higher level of morality than us, or a level of morality lower than us. If there really are extraterrestrial civilizations, and they are on their way to Earth, all mankind will face great changes that have not been encountered in 10,000 years. Is it a crisis or a good situation?

I analyze this problem with reverse thinking: first look at the premise, aliens are on their way to Earth. A little bit of clarification:

Alien technology is far more advanced than that of earthlings, not only has the ability to discover the civilization on the earth, but also has an in-depth study of the earth's civilization, otherwise, the aliens will not rashly cross the distance of light years to the earth to take risks!

Suppose that we earthlings discover that there is a planet in the universe that has life, but their civilization is much worse than ours, maybe to the level of monkeys. So what would earthlings think? Since the civilization of the earth is much more technologically advanced than them, the purpose of going there cannot be to steal their civilization, because it is not worth it; Go there with a missionary mentality to spread the civilization of the earth?

For thousands of years, have humans wanted to go there and spread civilization? Where to go for scientific and cultural exchanges? What is there for the low-level civilizations there to be exchanged?

To do **? The cost of the long journey is too high... After eliminating all possibilities, the only purpose is to take a fancy to their living environment, to explore the cosmic colony in the past, and to find a backup for the earth!

Once the living environment of the earth deteriorates, it will not lead to the extinction of civilization! Therefore, if there is really an alien civilization rushing to the earth, we earthlings are ants in their eyes, and there is no kindness at all. It's a curse or a blessing, so let's pray quickly!

There is no way to solve this, if it really comes to that day, accept your fate.

Humans must take corresponding protective measures, because these alien civilizations may pose some threats to mankind. I did think about something like this because I felt like it was a really scary thing.

Humans have to protect themselves, communicate with aliens, and ensure the safety of their planet. I thought about it, if the other party had bad intentions, I would fight with the other party.

I thought that humanity might go to a higher planet, where they would live, they would learn their technology, and humanity would continue to multiply.

Humanity could be destroyed, I thought about it, I thought they might take over the planet, I thought about this before.

It should exist, and there is no other way to get in touch, the current technology has not developed particularly strongly, and there is no ability to get in touch.

It is very likely that it exists, so we should improve our technology and explore outer space as much as possible, so that we can get in touch.

It's not so sure if there are extraterrestrial civilizations, and there's no good way to get in touch with them.