Super Battleship Reborn

After hearing this explanation, Xiao Yu suddenly figured out why he felt familiar when he heard this voice.

Because... this is clearly the age of the earth, my own voice!

The me from the future, the me from 500,000 years later, because I did a stupid thing now... Xiao Yu's thinking tended to become a little rigid at this moment.

This matter was too unexpected. Xiao Yu is already mentally prepared, no matter who this unknown existence says he is, he will not be surprised. But in the end it still surprised me.

Xiao Yu's first reaction was disbelief. Based on a good scientific foundation, Xiao Yu clearly understands how unreliable time travel is. Not to mention the superluminal movement in the physical world, except for the approximate cheating method of curvature navigation, Xiao Yu really doesn't know how to achieve superluminal movement.

The limitation of the theory of relativity still firmly binds all the matter in the flat space, making them unable to go beyond the barrier of the speed of light. Moreover, even if the speed beyond the speed of light is really reached from the flat space without using the method of curvature navigation, Xiao Yu does not believe that it will really turn back time. The reason is simple, because there is a paradox.

Assuming that superluminal motion can really turn back time, then, does this time reversal only happen on the matter moving faster than light, or does it happen in the whole universe? If it happens within the scope of the entire universe, there is one thing that is hard to imagine, that is, why can an extremely tiny object moving at super-light speed affect the entire universe?

If it happened on this single substance, causing it to travel into the time and space that has passed, then since the big universe does not go back in time, where would it travel in the past?

In this case, it seems that only the multiverse can be used. Infinite time and space to explain, that is, the theory of parallel universes that was quite popular in the Earth era. The theory holds that the number of universes is infinite, and any tiny error will lead to the birth of a new universe. For example, when a person gets up in the morning and goes to work, when he goes out, whether he steps out with his left foot or his right foot first, just such a difference will lead to the birth of a universe. In one universe, he goes out with his left foot first. In another universe, he steps out with his right foot first.

As we all know, the position of an electron is uncertain, so according to this theory, the movement of an electron will lead to the birth of a large number of parallel universes all the time. in a universe. A certain electron appears at point A, in another universe. This electron appears at point B. There is only one difference between the two universes.

The theory of parallel universes can perfectly solve the time paradox, but there is still a fatal flaw in the theory of parallel universes, as long as a very simple logical thinking can overthrow this theory.

In the parallel universe theory, there are infinitely many parallel universes in the real big universe. Infinitely many, this is a very important concept. This means that no matter how unlikely an event is, there must be a universe in which it happened. For example, when a person is eating, he eats a coin. The probability of this happening is calculated as one in ten thousand, and this coin happens to be handed down from ancient times to the present, and it is invaluable. This probability is calculated as one in billion. Based on a comprehensive calculation, the chance of this person getting a priceless coin after eating a meal is one in ten trillion. Among the countless parallel universes, there must be a universe where such a thing will actually happen, that is, in this universe, there is really a person who ate a priceless coin after eating a meal.

An interesting inference can be made from this,

That is, if the probability of a civilization developing to the highest level of technology is one in ten trillion, and the probability of the top civilization mastering the technology that travels through different universes is one in one hundred trillion, and the exit location of this civilization that travels through the universe It happens to be in front of your computer, and because of their arrival, the chance of your computer being smashed is one in a trillion. If you calculate it comprehensively, the chance of your computer being smashed by the civilization that traveled through is 100. One in a trillion trillion trillion, but don't forget that the number of parallel universes is infinite, even if the probability of this happening is only one in a million trillion trillion trillion, even if there is only such a small probability, it will inevitably happen Happened - because parallel universes are infinite, simple as that.

But now we are still sitting in front of the computer, and no sudden brain-dead civilization has smashed our computer. Then it can be disproved that infinitely many parallel universes do not exist. Perhaps parallel universes really exist, but they will never be infinite, and their number must be limited.

Since it is impossible to go back in time, at least it is impossible to speculate based on Xiao Yu's current technological level, and because a guy who claims to be himself after 500,000 years travels from a limited parallel universe, such a small probability The incident is unlikely to happen, so where did this guy come from?

After hearing what this guy said, Xiao Yu's first reaction was that this guy is a liar.

Not only did Xiao Yu not let go of his vigilance, but it became even tighter. Xiao Yu said coldly: I can't believe you. Give me an explanation, and until you give me this explanation, I won't believe anything you say.

Oh? What explanation do you want? Xiao Yu soon received a message. This message is full of a very interested tone.

It's very simple, explain why you came here from half a million years later, and how you did it. In my technological system, space-time travel is impossible. If you want to admit time-space travel, I have The theoretical system will be overthrown, and relying on a set of wrong theories, I don't believe that after half a million years, I can still develop to the point where you are. This is a contradiction. Before you explain this contradiction reasonably, I can't believe you. Xiao Yu said.

Your statement is wrong. People on earth in ancient times believed that the earth was flat and the sky was round. This is obviously a wrong theory, but in the wrong theory, human beings still developed a splendid civilization. Technology The development of science lies in constantly summing up laws from phenomena, and then using this set of laws to solve other problems. Science allows mistakes, and the significance of scientific progress lies in constantly correcting these mistakes. The unknown existence replied road.

You haven't answered me yet, how did you turn back time? Xiao Yu still refused to relax his vigilance, and asked full of vigilance.

Well, since you want to know, then I'll tell you. The existence replied, Why can't time be turned back?

It's very simple, entropy increases. Xiao Yu replied.

The entropy value of an independent system will only increase, not decrease, right? Then if there is external energy support, can the entropy value be reduced? If the entropy value decreases, will time go back?

Xiao Yu was taken aback. In fact, no matter whether this guy puts forward the superluminal time travel theory or the infinite parallel universe theory, Xiao Yu will refute it mercilessly, but Xiao Yu did not expect that this guy actually put forward such a statement.

Xiao Yu had no way to refute this statement. The reason is simple, because in theory, this statement is correct, as long as the entropy value can be reduced, time can be turned back. Just, just, how could the entropy decrease? Could there really be an outer universe?

Xiao Yu doesn't know these things, this is beyond Xiao Yu's cognition. But Xiao Yu was only confused for a moment before reacting.

Xiao Yu sneered.

Are you saying that you used the energy of the outer universe to turn back the time of this universe? Then there is a question that I am very interested in. Since you can travel through the universe and turn back the time of a big universe, what else is there? Is it something you can’t do? Will you travel from 500,000 years ago to the present to find me?”

It doesn't make sense. Xiao Yu is facing this unknown existence with the utmost vigilance. No matter from the aspect of science or logic, Xiao Yu will raise the greatest doubts about every word it says. If its statement is perfect and strictly self-consistent, maybe I will believe it 10% of the time.

I don't have that powerful ability. The unknown existence sighed, In fact, even I am not sure whether there are other universes outside our universe, let alone travel to other universes , to borrow the energy of the rest of the universe.

So, how did you reduce the entropy value? Xiao Yu asked in a very interested tone.

It's very simple, use the energy of this big universe to reduce the entropy value of this big universe. The unknown existence replied.

Ridiculous. Xiao Yu retorted mercilessly, I have never heard of anyone who can grab himself by his hair.

Who said... I reversed the time of the entire universe? This unknown existence said slowly, Take the Milky Way as an independent entity, and then extract the energy of other galaxies to reduce the entropy value of the entire Milky Way , reverse the time of the entire Milky Way, and let the Milky Way go back to the present 500,000 years ago, what do you think of this explanation?

Huh? Xiao Yu only felt that a sledgehammer hit his mainframe, causing him to temporarily fall into a crash.

PS: Finally updated on time... Well, please ask for a monthly pass, after all, it is still in the double monthly pass period.