For obvious reasons, I was so groggy that when I went to the dining room for breakfast, Ann asked me a little worriedly, "Patrick, are you alright?"

I shook my head and smiled, "It's okay, Ann." Pen "Fun" Pavilion www.biquge.info"

"Are you sure? You don't look good. Her beautiful blue eyes looked at me tenderly, and the fine crow's feet gathered tiny mounds at the corners of her eyes.

"I'm sure I'm fine, Ann. Thank you for your concern. ”

She didn't insist anymore, but told me to always ask her for help if I felt unwell.

I thanked me again, hastily finished breakfast, put on my school bag, and went out.

Ann is my landlady. When it comes to being a landlord, it's actually better to say "homestay".

It was the summer of 2006 and I was studying at Simon Fraser University in Vancouver, Canada. In many cities in North America with prestigious schools, there will be local residents who apply to the school and are willing to accept some foreign students to live together. Of course, students need to pay a certain monthly fee.

Unlike the normal landlord relationship, the host family will accept the students living at home and integrate them into their lives. Usually the relationship between the two will be closer. The live-in association will take care of the students in their daily life, and the school will also randomly supervise the students' living conditions in the home, so as to protect the quality of the homestay and the rights and interests of the students.

That being said, the reality is that there are many "live-in", especially Chinese families, who are usually just trying to earn a rent. In my exchanges with other mainland students, "living at home" is almost a common perception. The more common problems are too little dinner to eat, the toilet is used for a limited time, the door will be locked when you come back too late at night, the attitude is mean, and so on.

Whenever I talk to people about this topic, I feel really glad that my "home" is really a very, very good family.

It is said that it is a family, but in fact there is only an old couple. Her husband's name is John, 72 years old, 186cm, sturdy, full of silver hair, a native of Canada, even at this age is still a tall and handsome old man. My wife's name is Anne, 62 years old, 165cm, she is a blonde Scottish woman with a sweet smile on her face, I have seen a photo of her when she was 20 years old, and I have invented a four-character idiom for this purpose, which is stunningly beautiful.

John and Ann both remarried, and they have four children, all of whom are adults and are living independently. Perhaps feeling a little lonely, the couple submitted applications to two local universities, SFU (Simon Fraser) and UBC (Columbia University), to become homestays. So I saw John's phone number on the school's home information bulletin board and moved in.

Perhaps because there was no one to take me on, John and Ann treated me like their own, and Ann once joked that she would take me as her godson so that I could emigrate directly. Their four children would come to dinner from time to time, and they gradually became acquainted with me.

John and Ann's house was some years old and is said to have been left behind by John's father. The house is divided into two floors, with a usable area of about 300 square meters, in addition to the front and back yards of 100 square meters. The front yard was a lawn, unfenced, stretching to the side of the road, and John irrigated it every evening with a waterer specially designed for watering the lawn, and mowed the turf neatly, and then at dinner he proudly commented on the neglected and slightly messy front yard lawn of his neighbors.

The back garden of the house is also a lawn, John is not so diligent in taking care of it, so it looks a little overgrown from the rough, and there are small fields on the side of the lawn, which John uses to grow some fruits and vegetables, and after picking them, they are washed and become a vegetable salad on the dinner table. The whole back garden was fenced, and on the fence stake in the far corner, I was only 19 years old at the time, and I had secretly carved my name on it for fun.

Of course, it's an English name, but it's actually a few letters that are crooked. By the way, my English name is Patrick, and my friends call me Xiaopai. As for the Chinese name, I won't mention it, because this is a true story, and after I wrote the whole story, I was also worried that you would flesh me, didn't I?

As I sit here and type this text, I have been back to China for several years, and the whole back garden and those fantastical and magnificent stories have disappeared with the wind. I'm probably the only person in the world who knows those stories. And today, I suddenly felt the need to write down these stories and share them with more people.

Because there is a world that has existed and still exists.

However, on the morning of June 2, 2006, I was still in school and had not yet realized the secrets of the desolate world and the back garden.

I sat in the back row of the 600-seat classroom in the school's Image-theater, watching the energetic old professor in front of me dance to the slides on the big screen.

The classrooms were far from full, and the summer semester itself was less crowded, and even fewer people came to this kind of big class at 8 o'clock in the morning. Among the more than 100 students who attended the lectures, more than half were distracted, and there was no way, "Quantum Physics Preliminary" was among the best in all basic courses.

I'm not a physics student, but a business school that has nothing to do with physics. Although Canadian universities have a very high degree of freedom in course selection, for practical reasons, business students will also study economics, and many will choose philosophy, psychology or statistics, but the elective physics, especially not the 100-level "Basic Physics", but the 200-level "Preliminary Quantum Physics", is completely out of my personal interest.

In fact, if it weren't for factors such as job hunting and parents' expectations, I would probably have entered the physics department and embarked on the road of no return to theoretical physics research.

Now, however, I am one of the few students who are more than half distracted.

Because I've been recalling that dream.

That three-month-long dream.

The world in that dream, every grass and tree is so real, every detail is so delicate, I can even recall the touch of Yingzhao's feathers, and the outline of the frog's scales. Not to mention the sharp pain that penetrated deep into the bone marrow when the Zhuxian Sword pierced into the body.

Is there really such a realistic dream in this world?

Not to mention......

I glanced at the desk, next to the open textbook "Introduction to Quantum Physics", the same spread out "Vena Book".

I have read this book many times, and there is not a word.

What the hell is going on?

Distraught, I flipped through my textbook and stumbled upon Chapter 12, Introduction to Quantum Cosmology, where several ultimate corollaries about the theory of quantum cosmology caught my attention.

First, there are countless parallel universes in the world.

Second, there is the possibility that there is a universe that does not conform to the laws of physics.

Third, there will be a collision between the universes, and there is a chance that wormholes will be created that can connect the two universes.

Perhaps, the desolate world is a parallel universe? The so-called beginning of heaven and earth is that this universe has just been formed? In the process of formation, it collided with the universe in which we live, resulting in wormholes?

But if so, how can I go and come back, and how can I come back from the dead?

At the end of the class, all the students dispersed as if they had been liberated, and I walked against the sparse flow of people towards the old professor, with whom I needed to talk, confirm my thoughts, and answer my doubts.

I walked up to him, and the old professor looked at me with his glasses open.

"Questions?"

"Well, about quantum cosmology......"

"Quantum cosmology? that's chapter 12, have you already prepared for it?" the old professor said, looking up at his watch, "Come to my office." ”

The old professor's full name is Peter Kennedy, and he is one of the top five theoretical physicists in the United States and enjoys a high reputation in circles. The physics department of our school is not particularly powerful, and we can't afford to hire such a physics master, so he is just an honorary professor of the school, and he is invited to come to SFU every summer semester to give lectures, and I can't see him at other times.

I followed him to his office. "Sit down," he said, "tea or coffee?"

I was a little restrained and waved my hand to say no.

He smiled, didn't continue to be polite, made himself a cup of coffee, and sat down in the office chair.

"Say it, your question. ”

I hesitated, then said:

"Yes, I had a dream. ”

The professor sat quietly and listened to my story of the past three months, and I was a little apprehensive that he would throw me out as a madman.

But I had to take the risk, I was too desperate to figure out what was going on.

Fortunately, at the moment, he has no intention of kicking me out. It gave me a little bit of peace of mind.

The whole process was a bit long, and there were some places that couldn't be expressed in English, which took a lot of effort. The old professor listened quietly, bowing his head slightly from time to time. After about two hours, I ended my narrative.

"Nice story. The professor looked at me and said.

My heart sank.

But then he laughed, "But I'm not a psychiatrist, I'm only responsible for explaining the logic of your story from a physical point of view," as if sensing my nervousness, he smiled slyly, "Isn't it?"

I breathed a sigh of relief.

So, let's break it down first. You guess what you're going through is because you went to another world in a dream through some unknown wormhole with different systems of physical laws and laws, and you spent three months there and then died in that world, only to somehow come back to our world and bring back a book. ”

"Yes. I nodded in confirmation.

"First of all, I must say that the most probable and reasonable explanation is that this is one of your dreams, but for a theoretical physicist, this explanation, while reasonable, is very uninteresting. ”

"On the flip side, if all of this is true, then things get really interesting. ”

The professor pulled over a small whiteboard and took a pen and gestured on it.

"Let's start by trying to explain the inconsistency of time passes. Imagine a large bunch of soap bubbles suspended in the air. Each soap bubble represents a complete 12-dimensional universe. Because time and space exist only in soap bubbles, there is no time and space between soap bubbles. Therefore, each universe has its own 'time and space'. Time may not travel at the same rate across universes. That's why you spent three months in that world and only one night in this world. ”

"Are you saying that the world really exists?" I said, my eyes wide.

"Don't worry, lad, I'm explaining to you. The professor took a sip of his coffee and continued, "According to the theory of multiple universes, there are infinitely many universes. The laws of physics in these different universes vary, but the laws of physics in the vast majority of universes do not create an environment conducive to life. It may be that in countless universes, only the physical laws of our universe can give birth to life. But it is also possible that there are universes with different laws of physics that can still give birth to life. The world you are describing is also one of the universes that may exist. As for an existence as absurd as a giant beast the size of an entire Rocky Mountains, it may be perfectly justified by the laws of physics in that world. ”

He spoke very quickly and had a lot of jargon, which I struggled to hear, but I generally understood.

"That is, that world is real?"

"I'm just saying that there is such a possibility in physics. ”

"If all this is true, how can I come back to life and return to our world when I am obviously dead?"

"The essence of quantum cosmology is to quantize the universe, and the nature of quantum is that it is 'unmeasurable', that is, what you observe is not the only reality. You die in that world, and this cause may extend from countless fruits, each of which exists in a universe. Maybe you are in another universe right now, and you are completely dead when you die in that world, and the news about you will only be the news of the disappearance of a college student, but in our universe, you are not dead, or you have come back from the dead. What you see is the 'fruit' of this universe, and this universe becomes real. ”

I was a little confused, especially the last paragraph, which had a serious conflict with the materialist worldview I had established since I was a child, and I couldn't accept it for a while.

"Are you saying that the reason I am alive is because I am observed to be alive, and that is not a violation of the most basic materialist ideas?"

"Are you Chinese?"

I nodded.

"In your country, materialist ideas seem to be in vogue. I have met several Chinese students who have a very similar worldview and cosmology. But you must know that materialism is only one of many philosophical ideas in the world's academic context. ”

But dialectical materialism has been tested in practice, and Newton's classical physics has proved it correct. ”

"But classical physics itself has proven to be incomplete, explaining only a part, if not just a small part of the world's phenomena. ”

I was speechless, the professor was right. The person who first proved the flaws of classical physics was called Einstein, and that theory was called the theory of relativity.

"There is a very important inferential idea in materialist thought, called atheism, but if the theory of many universes is correct, then in an infinite number of universes, there may be a universe in which the gods of Olympus exist in the laws of physics. Or there is another universe where there are gods and angels in the laws of physics. So you see, a lot of good physicists are religious, because science doesn't prove that God doesn't exist, and on the contrary, the existing theories prove that God probably exists, in some universe. By the way, I'm a Christian myself. ”

My worldview over the past 19 years has been crumbling and subverting, and my mind is in turmoil. I tried hard to understand his words.

"So, the reason why that world exists in this form is because I have observed it in this form. Right?"

"Yes, in quantum physics, it is not because the fact is X that the observer sees X, but because if the observer sees X, X cannot be the truth. So the observer himself has a huge impact on whether X is a fact or not. ”

I nodded in confusion, feeling that I needed some time to digest the subversive thoughts.

"Thank you, Professor. I said, "Thank you for your patience and for not telling people to throw me like a madman in the first place." ”

The old professor waved his hand and laughed, "It's an interesting story, and the process of explaining this story in quantum physics is just as interesting. From that point of view, I should thank you, lad, that at my age, time is running out for fun. As for whether this story is true or not, that's not something theoretical physicists should care about. ”

I bowed gratefully and left.

For the next three whole days, I went crazy and learned everything about the theory of the multiverse in quantum physics through various channels, but with little progress. At one point, I thought that those three months might really be a vivid dream, waving away in my life, leaving only one memory.

Until the evening three days later.

It was Tuesday, June 5th, and I went to bed early because the next day was my midterm exams.

Then he was rudely pushed to wake up.