A butterfly in the tropical rain forest by the Amazon River in South America, occasionally flapping its wings, may cause a tornado in Texas, USA two weeks later.
This is the famous "butterfly effect", and it is also the reason why Lin Zhaoxi is in a huge predicament now.
She is a student of philosophy. In her previous logic class, the teacher spent a whole class teaching them the "butterfly effect", saying that this is a slippery slope fallacy because it directly transforms possibility into inevitability.
Of course butterflies in the Amazon rainforest don't necessarily cause hurricanes in Texas, it's actually chaos theory. It is worthwhile that small changes in the initial conditions can drive the possibility of long-term and huge chain reactions in the entire system.
The same is true for transportation.
If she wants to predict the specific location where Lao Lin will encounter a car accident within a certain period of time, does she have to consider the entire transportation system, but there are too many factors to consider, which really gives her a headache.
At 5 o'clock in the morning, the alarm clock beeped lightly, Lin Zhaoxi woke up in a second, and quickly turned it off.
But Xiaolin who was on the upper bunk turned over twice, and the painful and suppressed voice sounded again, Lin Zhaoxi knew that she had woken up again.
In order to go out quickly every day, she would change her clothes for the next day before going to bed at night. Now, she immediately got up from the bed, took her backpack, and went out quickly.
Yongchuan has maintained a week-long sauna day, and today's sky is particularly gloomy. Lin Zhaoxi raised her head and was suppressed by thick clouds and Chaoyang, who lost her original effect, felt that it was time for a heavy rain.
During the usual first exam of the morning, she was very absent-minded. It may be because the aunt came, she felt sleepy, cold and tired, she forced herself to wake up, but she just wanted to sleep on the table.
If Xie Ran hadn't knocked on her desktop kindly, she would have fallen asleep lying on the table during the exam for the first time ever.
When handing in the paper, Lin Zhaoxi felt bad.
Xie Ran glanced at her test paper, then asked her if she wanted to see a doctor.
Before she could answer, Lu Zhihao said first, "I'm sure every girl has those few days, it's fine."
Lin Zhaoxi was stunned for a while, and tried to joke with him: "You are really my good sister."
"Let's go at noon." Xie Ran said again.
"Well, thank you teacher."
—
In fact, from Xie Ran's gaze, Lin Zhaoxi probably knew that her test scores this time must be unsatisfactory.
But when the test paper was handed out, the huge score of 59 on the paper was still unacceptable to her.
Zhang Shuping said in front of the podium: "This test is quite difficult. There are no more than ten students with a score of 60 or above. This is my own mistake in writing the paper. I hope everyone can correct their mentality and don't feel that they have failed the test."
"too difficult."
"I can't do the last question at all!"
The students below complained.
"Student Lin Youguang scored 90 points in the test. This time he performed very well and deserves encouragement."
There was sparse applause in the classroom.
Lin Zhaoxi was still looking at her own score. She didn't have many such difficult test papers, but Ah Guang scored 90 points in the test, and now, there are already 10 people who have surpassed her.
After everyone got to the same starting line, the importance of talent gradually became apparent. For her, Mathematical Olympiad was still very difficult.
"At the same time, I would like to remind you that there are a few students who were among the top students this time, and their test results are not very satisfactory. I hope you can adjust your schedule and take good care of your body. This is more important than studying hard."
Hearing these words, Lin Zhaoxi raised her head suddenly.
A little voice came from the high school student, someone pushed Yin Xiaolin, bowed his head and said something.
It's probably—you see, she works so hard every day, so it's not like she failed the exam.
In fact, Lin Zhaoxi didn't want to pay attention to these words, she had heard many, many similar cynicisms.
But at this moment, perhaps physically and mentally exhausted, many thoughts that she never agreed with seemed to emerge.
"Only 5% of people are suitable for Mathematical Olympiad" "People without talent should not waste their lives on mathematics" "Mathematics comes to the end, it is a contest between geniuses".
She suddenly wondered, is it necessary for her to stay here
Time is tight, and she probably really can't do several things at the same time. And more importantly, she might not be the kind of genius who is suitable to go to the end in this field, and there is no need to accept too strict training.
—
One class was muddled.
After class, Lin Zhaoxi took her backpack and prepared to go to the library to read.
After walking a few steps, someone called her from behind.
"Lin Zhaoxi!"
It was Lu Zhihao's voice.
The sky outside the corridor turned out to be completely dark, and it looked like it was about to rain heavily.
Lin Zhaoxi and Lu Zhihao stood facing each other, there were obviously many people around, but she felt that everything was empty. It turned out to be a bit like a primary school summer camp, when she chased Lu Zhihao desperately.
"Are you too tired recently?" Lu Zhihao asked.
"You know, girls have a few days every month." She said nonchalantly,
"I think you should take a break. How about I ask Pei Zhi when he can come, and let's go out to have a meal together, to relax or something?"
When Lu Zhihao was in a hurry, his face would obviously wrinkle into a ball. Although he pretended to say it casually, Lin Zhaoxi could still see it.
"I don't have time to go out recently, wait for a while, also called Hanamaki?"
She was still chatting and was about to leave. Lu Zhihao wanted to pull her, but she broke away from him and ran downstairs.
Lin Zhaoxi knew when her self-esteem became so strong, and she didn't feel too bad when she did poorly in the exam, but when Lu Zhihao grabbed her and comforted her, she actually wanted to cry
Rubbing her nose, she still walked into the reading room.
During the summer vacation, there were still many graduate students and doctoral students sitting in the library of Sanwei University, as well as students who wanted to take the postgraduate entrance examination. Especially at this point, no one went to eat, and the reading room was full.
She took a book from the shelf, found a corner, and sat down cross-legged.
This is "Linear Algebra". It has been published for a long time and the pages are yellowed, but it is a book on Lao Lin's list.
Lin Zhaoxi took it unknowingly, probably subconsciously, seeing Lao Lin's handwriting and joking, she would feel better.
Probably because, among adult college students, she is still obvious as a junior high school student sitting on the ground.
She was quickly accosted.
"How old are you?" A short-haired female college student looked at her.
"ah?"
""Linear Algebra" why are you reading this book?"
Lin Zhaoxi was unresponsive today. Just as she was thinking about how to answer, the female college student looked away and opened her book to read.
Lin Zhaoxi glanced secretly, and found that the book she was reading was also marked with various annotations, and if she understood it well, it was "Differential Geometry".
"Do you think it's strange that we both have annotations on our books?" the female college student asked her quietly. "Who asked you to borrow this book, or did you take it casually?"
"It's my dad."
"I knew that most people would put away books with such scribbles long ago." She smiled, "Is your dad a professor of mathematics? Can you tell me who it is and open a back door for me? I want to take the postgraduate entrance examination."
"No... no."
"That's the old senior."
Lin Zhaoxi was thinking, what kind of strange habit does the Mathematics Department of Sanwei University have, whether it is Xie Ran or this female college student, when she sees her holding a book full of annotations, she wants to come over to recognize her relatives.
She pondered for a moment: "How can you be so sure that he is a senior?"
"Since you are not a teacher but a senior, why did you specially ask you to read this book? And you are so young, so your father asked you to read "Linear Algebra"?" The other party paused for a while, "No, if Your dad is not a teacher, so why do you have a library card from our school, is it grandpa?"
"No." Lin Zhaoxi explained, "I'm training here."
"The provincial math competition team?"
"Um… "
"Little genius!"
This is the first time Lin Zhaoxi has been associated with this word. If it was before, she would probably be a little happy, but today she just got beaten back to her original shape, so she couldn't be happy at all.
"Is there anything special about this book?" she asked, closing the book.
"This is a tradition in our mathematics department. Everyone will secretly write things in interesting places and exchange ideas. Teachers educate students, seniors educate juniors, and the predecessors pass on to the younger generations."
"Traditional? The school indulges the mathematics department."
"Of course it's indulgent. After all, it's the top ace major in the country. However, it is said that the earliest school also opposed it. It was the teacher who led such students to do it. He also used Fermat's "Arithmetic" as an example, saying that mathematicians are very smart when they have a flash of inspiration. It's important, the school thinks it makes sense, so let's ignore it..."
Lin Zhaoxi's heart beat very fast when she heard the word Fermat: "Teacher... Do you know the name of that teacher, are you still in school?"
"I don't know what it was called, but it is said that the teacher left the school soon."
Lin Zhaoxi's palms were a little wet: "Why did you leave?"
"I don't know, if you break the casserole and ask the end, it can't be your father, right?"
"I have no idea."
"What do you not know?" The young lady pointed to the ceiling, "There is a school yearbook in the library room upstairs, where you can find the names of the graduates. If you know how old your father is this year, calculate whether he graduated from college, graduated from graduate school, Or the age of Ph.D., you can find it in the yearbook.”
Lin Zhaoxi: "..."
"Besides, the book in your hand is so old that teachers who have only recently come to the school for exchange will not read it, so your father is most likely an old college student in the 90s."
Lin Zhaoxi remained silent.
The people in the Department of Mathematics have a clear mind, calculate the graduation age from the individual age, and then check the yearbook. Of course, it's not that she couldn't think of these methods, it's just that she never thought about them.
She stood up immediately, walked out of the borrowing room quickly, and handed out the book on the borrowing desk. After the staff scanned the book and made a light "di" sound from the bar code, she regained consciousness.
But then, she didn't go directly to the archives.
She looked around the library lobby, walked to the bibliographic inquiry machine, and took out the note that Lao Lin had written to her from her schoolbag.
There are familiar handwriting on it, numerous bibliographies, and the note is crumpled because it has been read too many times.
She felt strange before, she turned through the books that Lao Lin told her, and found that those books were yellowed due to old age.
And after the female student reminded her to look at the publication date, she probably guessed why.
She clicked on the search box and began to search for books by title.
1990
1992
1987
…
Lin Zhaoxi kept checking and looking at the publication date of each book, and when she saw the end, she silently let go of the mouse button.
In the list of books Lao Lin gave her, none of them were older than 1994.
The year she was born.
In other words, after she was born, Lao Lin never read any books from the library of Sanwei University.
Lin Zhaoxi let go of the mouse and took a step back.
A few dragonflies flew into the library, circling in the very low air, and there was a muffled thunder outside the library, and Lin Zhaoxi felt weak and confused from the inside out.
In Strawberry World, Lao Lin left school for her.
But why in this cheese world where there was no her, Lao Lin also left school at the same time, left the math position, and even gave up the opportunity to study abroad...
All of this, why