Pet King

There are no other guests in the snack bar. Uncle Li and his wife are sitting and chatting, sighing and discussing the revenue problem. At the beginning, they set up this shop in high spirits, but did not expect that the business has not improved, and it is difficult to attract customers from other restaurants around.

They saw Zhang Zi'an come in with another guest, and quickly greeted.

I haven't even had time to eat. Zhang Zi'an only needs two glasses of orange juice.

After they brought the orange juice, they retreated.

If it wasn't for the encounter with Meng Li in the library that day, or if he was not prompted by Meng Li, Zhang Zi'an could not find an unknown book in time from the vast sea of ​​books, and then Meng Li left first. Today he met Meng Li again, and he must not miss this opportunity to find out.

Xun Mengli was not deeply impressed by the incident that day, and then remembered after Zhang Zi'an reminded him, "Oh, that was the incident ... Is manager Zhang really studying mathematics?"

"Slightly interested," Zhang Zi'an said vaguely, "Mr. Meng, how did you know that book was hidden in the reference book area?"

"Hidden in the reference book area?" Meng Li hesitated in surprise, correcting: "No, no, you misunderstood. I mean, assuming there is such a book on life, the universe, and everything, it should be placed Reference book area-just a hypothesis, a book like this certainly cannot exist in reality, right? Is it true that you actually found such a book? "

The stress of his speech was on the words "hypothetical" and "should".

"It's not true, it's just a slip of tongue." Zhang Zi'an perfunctoryly tried to cover up the past. "Ms. Meng, does this book have any origin or source? How did you conclude that it would be in the reference book area?"

Xun Meng smiled with confidence, "Suppose there is such a book, I can not only conclude that it will be in the reference book area, but also that it should be on a bookshelf with various dictionaries."

Look down!

Zhang Zi'an was shocked!

What a god!

On that day, Meng Meng Li was obviously not at the scene, but seemed to witness the process by which Zhang Zi'an found an unknown book from a bunch of English dictionaries.

Zhang Zi'an became more and more curious, knowing that Meng Li was interested in selling Guanzi, and he said in cooperation: "Mr. Meng, can you not count, be a prophet?"

哪里 "Where, how can I have that kind of ability." Meng Li smiled and said positively: "Director Zhang, have you heard of Hyperwebster?"

"what?"

子 Zhang Zi'an heard it for a while, and couldn't search out the word from memory by exhausting his brain.

Meng Li explained: "Hyperwebster, translated into Chinese is the" Super Webster's Dictionary, "a thought experiment put forward by the well-known mathematician and science fiction writer Dr. Ian Stewart. The meaning of this thought experiment is to assume that this book exists Dictionary, the content of the dictionary is composed of 26 English letters, starting with A and ending with an infinite number of Z, like this— "

为了 For the sake of understanding, he took out a napkin, spread it on the dining table, and wrote on the paper with a marker that he brought with him:

A, AA, AAA, AAAA ...

AB, ABA, ABAA, ABAAA ...

AC, ACA, ACAA, ACAAA ...

Uh ...

Z, ZA, ZAA, ZAAA ...

ZB, ZBA, ZBAA, ZBAAA ...

Uh ...

ZZ, ZZZ, ZZZZ, ZZZZZ ...

Zhang Zi'an looked awkward, but he found that the arrangement of the letters seemed similar to what he saw in the unknown book.

Meng Li pushed the napkin to him, and at the same time put down his pen and said, "Do you know what this means? This means that the Super Webster's Dictionary contains all possible combinations of letters, and also contains all English words, whether they have been The English words that appear are new words that will only appear in the next few hundred years and thousands of years. They are all included in the Super Webster's Dictionary. For example, zidecuz, this is not a word and is not currently included in any dictionary. If anyone writes the word, it will definitely be considered a misspelling, but maybe in the future, the word will be given a certain meaning, and then people will be surprised to find that the word has already been included in the "Super Webster" In the dictionary ... Suppose there really is such a dictionary. "

Xi Mengli drank a few mouthfuls of orange juice to moisten his throat, and let Zhang Zi'an digest his words by the way.

Zhang Zi stared calmly at those weird letters on the napkin, trying to keep up with Meng Li's thinking.

A moment later, Meng Li said: "Not only that, because this dictionary includes all possible English words, these words may also form all possible entries-the answer to all the unsolved mysteries in history, the world ’s Everything and everything can be theoretically found in this dictionary. These entries may further form all possible paragraphs, from the first poor writing written by an English beginner in a corner of the world, to "Declaration of Independence", to the English version of "Dream of Red Mansions", to the complete works of Shakespeare, to the British Encyclopedia, to all the English books in the Library of Congress, to all the splendid articles written by an unborn Dawenhao in the future , All included in this dictionary ... "

Speaking of this, Meng Li's tone changed, and she became very relaxed. She laughed: "But ... you can understand now, the content of this dictionary is infinite, there is no beginning but no end. The letters in it More than all the atoms in the universe, because the total number of atoms in the universe is limited ~ www.readwn.com ~ and the letters in the dictionary are infinite ... This book can only stay in people's imagination, forever It is impossible to appear in the real world, and even if all the time in the universe is exhausted and all the atoms in the universe are exhausted, it is impossible to write this dictionary. "

"My life is boundless, and books are boundless ..." Zhang Zi'an murmured.

"what?"

The voice of Zhang Zi'an was very low, and Meng Li did not hear clearly.

"No, it's nothing." Zhang Zi'an waved his hand, "I'm just a little bit nervous."

Meng Li nodded and raised the orange juice. "It's normal. This is originally a thought experiment that is rarely known except for mathematics. It is not as well-known as Schrödinger's cat, and it is popular with the public ... So, you told me Say, you are looking for a book about life, the universe and everything, and I immediately thought of the "Super Webster's Dictionary". Actually, I was joking with you, but afterwards, I was worried that I might mislead you. Wrong book, then my guilt is great ... yes, which book were you looking for? "

Zhang Zi'an laughed. "In fact, it is an undergraduate fantasy novel. The third part of the" Walking Guide to the Galaxy "written by Douglas Adams is called" Life, the Universe and Everything ".

"That's the case." Meng Li was surprised, "I rarely read science fiction, no wonder I haven't heard of it ... It's really ashamed!" ...

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