Science has allowed mankind to realize the rapid development of the entire civilization and brought unlimited welfare to people’s lives. There are too many mysterious things in this world and the universe, and people in ancient times couldn’t explain these things, so they all belonged to the theory of ghosts and gods.
When mankind enters the age of science and technology, all the mysteries of this universe can be explained by science. Of course, the prerequisite is that our science is strong enough, and some unexplainable things are not out of the scope of science, but our scientific strength has not yet reached that level.
After we have science, we often put forward various hypotheses, and then prove them through continuous experimental research. Scientists like to put forward various hypotheses for research and exploration, and some folk science enthusiasts also like to put forward some thought-provoking topics. For example: Someone once asked the question: If you were the only one left in the world, would you hear a knock on the door?
Human beings are a gregarious race. People often need to communicate with each other. Whether it is relatives, friends or neighbors, they will often knock on your door. When someone knocks on the door, you are not so scared, just curious: “Who is looking for me today?”.
Let me ask, if someone knocks on the door, do you think that something is outside the door, not a person? I believe that 99% of people will not have such doubts. Because from a scientific point of view, it must be other people who can knock on the door, not something mysterious.
There is someone knocking at the door. The reason why you are not afraid is because you know that you are not alone in this world, but there are 7 billion human races of the same kind. But if one day, you are the only one left in this world, would you hear a knock on the door? If you hear it, how would you react?
Many friends may say that if there is really only one person left in this world, no one will knock on the door, and there will be no knock on the door. Because there is only you in the entire human race, no one else will come. So does the knock on the door really don’t remember it? Einstein’s answer may be very different from ours.
Einstein is the greatest scientist in modern times. I believe many people know the achievements of his life, especially the contribution of the theory of relativity to human civilization is unparalleled. For Einstein, if you are the only one left in this world, the knock on the door may also sound. What’s the matter?
Someone might say the same. The knocking outside the door might be wind or animals. Of course, this possibility also exists, but it is not what we are going to discuss in this article. We are talking about intelligent life knocking at the door, not wind or animals.
If intelligent life is knocking at the door, who will it be? Someone may have thought of extraterrestrial civilization. Could it be that an extraterrestrial civilization came to the earth, and then found that you were the only person on the whole earth, so they came to knock on the door? This possibility naturally exists. If an alien civilization really comes to the earth, you, as the only intelligent life in this world, will naturally come to patronize it.
Apart from alien life, are there other possibilities? Einstein’s theory of relativity guides us in a possible direction. Friends who have some understanding of the theory of relativity should understand that this space-time is not flat, but there is space-time distortion.
The existence of time-space distortions led Einstein to put forward the wormhole theory, which is a channel connecting different time and space. I believe many friends also know that the parallel universe theory proposed by scientists, this theory believes that our universe is multi-dimensional, and there are different you in different time and space. You in this time and space may be just an ordinary office worker, while in another parallel time and space you may be a super rich man, and in other time and space you may also have a different identity and profession.
If Einstein’s theory of space-time distortion and wormhole theory can be realized, then it is possible that you in another space-time can come to this space-time. If this is the case, then the knocking at the door may be you in another time and space, not some other alien creature.
In either case, if you are the only one left in the world and suddenly hear a knock on the door, your first reaction may be panic and fear. Because you know that there can be no other human beings in this world, in theory no one should knock on the door. But an unexpected situation happened. There was a knock on the door, who would it be?
If you have some understanding of Einstein’s space-time distortion and wormhole theory, you may think that you may be in another time and space outside the door. But if you don’t understand the wormhole theory at all, then you will be surrounded by fear at this time, and you dare not open the door for fear that there will be a devil outside that we cannot understand.
Of course, even if you realize that the door may be you in another time and space, you dare not open the door rashly, because once the two time and space you meet, it may cause a series of time and space changes. For example, between you and the other you, one may disappear in this world.
Although there is only you in this world, I believe you don’t want to disappear inexplicably. Therefore, not opening the door is the right choice. Of course, if an alien civilization is outside the door to visit you, the only intelligent life, then it may be a better choice for you. Why do you say that?
Because you are the only one left on the earth, you will feel very lonely when staying on the earth, and it will be difficult for you to really live. And at this time, an alien civilization came to the earth and found you, then you should seize the opportunity to leave the earth to live in other civilized worlds, and save the last bit of life for mankind.
Of course, the wormhole theory is currently only a speculation of scientists, and there is no real evidence yet. Parallel universe theory is also just a current guess. Although space-time distortions exist, warped space may not necessarily give birth to parallel space-time.
If there are no parallel universes, and this world is only our universe, then when you find someone knocking at the door, excluding human beings on earth, the possible result is aliens. Of course, all of this is just a topic for us to chat about. In fact, even if there is a major change in human beings, it is impossible for only one person to remain. Either the entire human civilization will completely end and disappear, or a large number of people will survive. Keep on living.
Even Homo sapiens, the ancestors of mankind, could not have been developed by a man and a woman, but a group of men and women who continued to multiply and thrive and have the current human civilization. While science has brought us welfare, it also continues to bring disasters to us. Whether it is ecological deterioration or various disasters that may be faced in the future, mankind can only face it firmly until it becomes truly powerful.