Wang Bang has a conspiracy - he deliberately invites Lianxing and Yueyue to come to his house as a guest, and then starts cleaning, hoping that the two elementary school students will come to help if they can't stand it, so that the cleaning process of his kennel can be improved to the next level. Oh, no, I've already graduated from primary school, and I'm a Form 1 student.

Of course, we must find an excuse to teach and educate people, and be a hands-on scientific practice.

That pair of lovely sisters Hua'er is really Mr. Wang's auspiciousness, they just came to the house, Mr. Wang actually received a WeChat, saying that he wanted to buy his small website. It turned out that when Mr. Wang was dealing with scalpers in the cinema that day, he discovered the needs of "movie ticket market makers", and casually made a website, which is equivalent to a "ticket stock exchange", which was modified by an open-source RoR program, and there were still many scalpers to register.

After a period of fermentation, the small website actually has 100,000 registered users. At the end of the day, there was about 500,000 flowing water, which frightened the old Wang Tou, and quickly checked the security measures of this website, in case there was a problem with the money, he couldn't afford it.

Now, some people in the industry have taken a fancy to this website and want to meet and chat. This is a good thing, scalping websites are not a good business, what if they are noticed by the Internet police? It's better to get rid of it as soon as possible. In the eyes of the old king, the scalpers who are the most lovely after the technicians are not a good thing in the eyes of the dead ghosts who are blind.

Thinking of this, Lao Wangtou didn't want to meet with anyone who was interested in investing at all, so he first asked the other party what price he was willing to offer.

"At least more than 1 million." The other party said.

Lao Wang immediately became vigilant, how could he be willing to pay so much money? Could it be that you know the inside story of some website number jù? His server is an internationally renowned cloud service provider located in Hong Kong, and its business hours are longer than Wang's Internet history, so it is unlikely to leak, is it an institution or individual related to the statistical services he uses?

Now all statistical services in China are free, just because you can Chunjiang Plumbing Duck Prophet, rely on the number of jù to make money, no way, Lao Wang is afraid that the Google Analytics service will hit the wall, so he has to use domestic ones.

Lao Wang is also very entangled, on the one hand, he is afraid that the dead ghost will send people, and on the other hand, he is unwilling to sell cheaply. A website with a cash flow of 500,000 yuan, 1 million is definitely a cheap sale.

What's more, I don't want to be poor now, and I'm very short of money.

Lao Wang has a friend who also sold a broken fortune-telling website for 1 million, but after a few months, this website made millions for the buyer, and his intestines were repentant, and Lao Wang didn't want to see the miserable phenomenon of his intestines changing color.

Anyway, he thought he was already a millionaire, and when he thought of this, Lao Wang couldn't help but flutter.

Sister Lianxing quipped: "Teacher Wang, what news did you receive, why did your face look like a flower?" ”

No, you can't let others find out that you're rich! Lao Wang suddenly remembered that he still owed a lot of debts, what if the creditors heard the wind and moved? So Lao Wang hurriedly tightened his face: "It's nothing." ”

Lianxing sneered: "If there is something good to share with us, everyone is really happy when they are happy!" ”

Lao Wang: "You can't know about state secrets. ”

Xiao Lianxing spit out his lilac tongue, and saw the deer in Lao Wang's heart. Damn, I have a longing for a 12-year-old yellow-haired girl, it's really not as good as a beast. Quickly turn your head away.

Or my sister invited the Moon Palace Lord to be more serious, and asked, "What are we going to learn today?" ”

Mr. Wang's routine: "Before the official project is announced, it is still the old rule, what scientific questions do you need to be answered by the teacher?" ”

In the past, it was Xiao Lianxing who asked questions from east to west, but today the wind direction suddenly changed, and the young sister Invite Yue asked a very solemn question: "Teacher Wang, I have a question, but I am a little scared and dare not ask." ”

Teacher Wang: "What is there to be afraid of in broad daylight?" Just ask. ”

Ying Yue bit her cherry lip, no more than her sister who was not fascinated by death: "I want to ask, what will we see after we die?" ”

"Uh......" The old king was taken aback, he really didn't expect it to be such a question.

Xiao Lianxing was obviously also frightened by this question, and fell silent, looking forward to Teacher Wang's answer.

This question is obviously too heavy, not only the little girl will be afraid, but the old Wang Tou himself is often afraid, but he is now in a good mood, and can wittily avoid the key point, saying: "Wait, I think of a video related to this problem, find it out for you to see." ”

After looking for a while on Youtube, a video of a speech given by British bioevolutionary chemist Dawkins when he was young finally came out. In this video, Dawkins provides an exhaustive answer to the creationist question: "An organ as complex as the eye could not have evolved through guò."

The first qiē, which originated from the fact that photosensitive single-celled animals were able to sense the proximity of natural predators, and even a vague outline would have a huge survival advantage, so it became the first step in the evolution of the eye.

Animals that phagocytosis have the ability to sense light, and of course, they are also a tool for finding food. In that ancient era, both the devourer and the devoured were slow and swimming little creatures, but don't imagine the images of the animals that are racing wildly now.

The existential arms race of a pair of rival groups led to the evolution of photoreceptor cells to become more and more precise and sensitive, and finally led to the birth of the eye that "telescopes are far away", but it can gather the beam of light to obtain a better field of vision. This process is even reliably demonstrated by fossilized nautilus in a transitional state.

The explanation of the principle of a series of eyes can make Sister Yingyue's question clearer, knowing how light forms an image, and what else can a dead person see? Probably about to come out, right?

Mr. Wang's concluding statement: "Got it? When a person dies, he becomes dirt and manure, and without the structure of his eyes, he naturally cannot see anything. The next time you ask this question, if you are not strong enough, you must be by your mother's side, snort, and get into your mother's warm and safe arms, at this time, the problem is not a scientific problem, it is an ethical problem, it is the instinct of living beings to be afraid of death, and it is also instinct to look for strong support. ”

Invite Yue: "Teacher Wang, are you afraid?" ”

Teacher Wang: "Teachers are also ordinary people, of course they will be afraid. But my attitude will be a little more detached and calm than that of people who have no scientific knowledge. You know what? The basic unit of a computer's memory can't be made too small, why? Because there are high-energy cosmic rays that fall on the earth all the time, triggering secondary cosmic rays after the atmosphere hits atoms in the air, these invisible high-energy particles will hit the memory particles from time to time, and if the particles are too small, they will be broken, and the computer number jù will be lost.

Yes, since cosmic rays can hit the memory, they can also hit the cells of our body. Complex creatures like us, with more than 10 trillion cells in their bodies, are mutated by cosmic rays every day. However, most of the mutant cells die and are then cleaned up by our body's metabolic mechanisms.

A very small number of mutant cells survive, and they multiply uncontrollably, and this is cancer. You don't have to hear about cancer and think that it is incurable, that is the old calendar, and now most cancers are treatable or even completely curable. Germany is such an advanced country, and their number is that 50% of Germans will get cancer in their lifetime.

Of course, you hot young girls don't have to worry about this problem, teacher, don't worry for the time being, our ability to resist cell mutations is still very strong, and the probability of cancer will slowly increase after the age of 50.

This story tells us why 'every mortal has a death'. Because our body is too complex, the probability of mutation accumulates to a certain degree, which will definitely cause the body to suffer irreversible lesions, and it will be GG. What to do? I had to give birth to the next generation, so that the baby started from a single cell and grew again, which is equivalent to the restart of the computer, no, it should be a system reinstallation.

As the software grows larger and larger, errors will occur, and the cost of directly eliminating errors is too high and not cost-effective, so restarting and reinstalling is the best choice at a certain cost.

The biological world is fiercely competitive, and the resources available to any one living thing are limited, which is equivalent to giving a programming project a limited time and budget. Therefore, almost all species that can win are the product of compromise and imperfect, and their body functions will definitely be eaten by natural enemies at some point in time, and those who have no natural enemies like humans will be crushed by their own cell mutations. ”

Mercy Star: "Everyone has a ...... to die"

Teacher Wang nodded: "Yes, but we should be grateful to the god of death." If there were no death, if there was no competition for survival in the biological world, we would not be standing here today and sighing about life. Without this strategy of passing on your genes from generation to generation, your mother would not have given birth to you and loved and cared for you. All we have can be attributed to the merciless scythe of death, which weeds out the losers who have competed with our ancestors for thousands of generations, and finally we can live in this world with love and hate, happiness and sadness.

Thank you Grim Reaper, Amen! ”

Both Ying Yue and Lian Xing involuntarily followed the teacher to make a nondescript gesture of thanking the god of death to draw a cross, and they looked very pious.

Ying Yue said sincerely: "Thank you, teacher, I don't have to worry so much now, it turns out that death is very good to us." Without him we wouldn't have existed at all, and although we always had to be taken away by him, we still had a life, right? ”

Lao Wang laughed: "Well said, Yue'er's understanding is quite high." ”

Mercy Star: "Wow! The teacher is eccentric and calls Yue'er so intimate! ”

Teacher Wang: "Xing'er...... Okay, that's the case, right? ”

Sister Yue'er and Sister Xing'er laughed together, completely forgetting that they were still discussing an ethical issue that made Lao Wang shudder.