Go back to 1990 to start a business

Xia Chuan just glanced casually and realized that the person asking the question was not a student, nor did he look like a reporter. He sneered in his heart and said lightly: "After I finish speaking, I will communicate with everyone. Now please don't interrupt at will, no matter where you are." Come on, please respect Harvard."

The man immediately became the target of public criticism, and the students next to him immediately asked: "Where did you come from? Who asked you to pretend to be a Harvard student and cause trouble?"

The man was so frightened that he quickly ran away.

Xia Chuan continued calmly:

"I just mentioned displays, and the same applies to other technologies. Optical fiber is the key. Breakthroughs in optical fiber technology determine the bandwidth of the Internet. As long as we enter the broadband era, the Internet will enter an explosive expansion. I am talking about content.

Someone is researching this optical fiber, and they are the top experts in the industry. There is no need to say more about this.The direction is the only one, and even if we study it, we can’t catch up, including me.I estimate that this breakthrough can win the Nobel Prize in Physics. Of course, this is my personal opinion. "

The professor behind was shocked. It turned out that what Xia Chuan said were all links that needed to be promoted.

I just don’t know if those who study optical fibers are the two physics gurus in Xiangjiang?

Historically, it was really two big names in Xiangjiang who won the Nobel Prize in Physics for their breakthrough in optical fiber.

Xia Chuan proposed this matter so that humanity's limited research and development power should not be wasted on repetitive projects.

“This is the initial stage of the Internet, the PC era, which is expected to take 15 years.

Then it will enter the mature stage, which is the era of mobile Internet.It is not that mobile Internet will be available in 15 years, but that in 15 years, mobile Internet will surpass PC and become the main way to access the Internet.

This is also determined by demand.

As people's pace of life becomes faster and faster, the global economy becomes more integrated, transportation becomes more and more convenient, and travel becomes more and more frequent, people become more and more dependent on the Internet. They also need the Internet for travel and outdoor sports. People need to be able to access the Internet at any time for work and even when lying in bed. People's demand for mobile Internet exceeds that of desktop computers.

The reverse is also true.

The development of mobile Internet has allowed an increasing number of Internet practitioners to get rid of the shackles of the office and enter the era of mobile office, where work becomes family-oriented and even entertainment-oriented, and travel does not delay work, which in turn promotes the development of mobile Internet. "

Everyone immediately felt relaxed and happy when they heard it, and they were extremely yearning for it. They wished they could smash their desktop computers immediately and enter the era of mobile Internet.

"In the era of mobile Internet, the development paths of the United States and China are different. Americans are accustomed to using credit cards, and it is difficult to change in the mobile era because it is not too troublesome. But China is different. Credit cards have not yet developed. We entered the mobile era first, so credit cards were eliminated immediately.”

Everyone was horrified and moved. Although it was difficult to explain, no one doubted that Xia Chuan's authority over the Internet was unshakable.

The professors at the School of Economics all widened their eyes. They really wanted to hear Xia Chuan explain this issue.

But Xia Chuan changed the subject: "The mobile era also needs 15 years of development to reach its peak, and then it will enter the third stage, the Internet of Things era.

Why must we enter the Internet of Things era?Of course it is caused by strong demand.When the era develops to a high degree of automation, the demand is unstoppable.Let me give you the simplest example.

For example, if you open a global express delivery company, you must have at least 40 drones, 200 heavy trucks, [-] light freight vehicles, and [-] million couriers. "

Everyone gasped, Xia Chuan's far-sightedness frightened them to the extreme.

"I ask you now, how to reduce the cost of car transportation? Of course it is driverless. At least there is no problem on the highway. So the question is, how can I monitor every car in real time? What should I do if it is robbed? How can I Achieve unmanned management?”

Everyone has been shocked and dumbfounded. Damn it, [-] heavy-duty trucks are driving autonomously, and you still have to monitor them without anyone managing them?

This is a rhythm that will make workers all over the world unemployed.

"The Internet of Things is inevitable. For another example, if you get off work at five o'clock every day, how can you get the meal ready when you get home? The premise is that there is no one at home."

After all, they are all top students, and everyone suddenly showed a look of understanding.

“The Internet of Things is progressing step by step, and the core technical support is, I’ll give it a name, blockchain technology.

What is blockchain technology?In essence, it is a shared database, and the data or information stored in it has the characteristics of "unforgeable", "full traces left", "traceable", "open and transparent" and "collectively maintained".

Based on these characteristics, blockchain technology has laid a solid "trust" foundation, created a reliable "cooperation" mechanism, and has broad application prospects.

Take the simplest example, digital currency.

It’s not possible yet because there are too few people online, but digital currency will definitely appear.This has nothing to do with whether I say it or not. It is determined by demand.Now that the Internet is a powerful tool, some people will make full use of it to dig for gold.

I declare that I will not do digital currency, and I advise you not to do it either.If you must do it, don't tell anyone.At least don't get involved with me. Don't blame me if you let the security bureau arrest you. "

Everyone became more and more curious about what he said. Could this be a gold mine?

A smart person shouted first: "We don't blame you!"

Someone else shouted: "Talk about digital currency!"

Everyone laughed.

Xia Chuan smiled and said: "Since you are so demanding, I will tell you. First of all, let me state that my mathematics was originally at the level of a senior high school student, but in the past two years it has regressed to a junior high school level. I can't do it, so I am not responsible for any consequences. .”

The principal immediately started to sweat. Xia Chuan repeatedly stated that he was irresponsible, which was obviously something that would disrupt the financial order.

Block?There are so many students below who are looking forward to it enthusiastically, and I am afraid they will be booed as soon as they open their mouths.

Xia Chuan has already spoken slowly: "Let's give this digital currency a name first, let's call it Bitcoin.

First of all, we need an open source software that everyone can download and install. There is a public algorithm in this software. I don’t know this algorithm. This is the biggest difficulty. You can solve it yourself.

This algorithm can be verified by everyone. If you think it is untrustworthy, then verify it. If it is trustworthy, download and install the software. If it is not trustworthy, no one will force you to install it.

Based on this open source software, a P2P network is constructed.

Blockchain technology ensures the consistency of Bitcoin accounting.

Let me emphasize again that blockchain technology is extremely important. It is something that can change the entire social form and can be applied to every field you know. I recommend that any of you who can’t find a direction study this.But don’t ask me, I don’t understand technology, I can only tell you the direction from the perspective of demand.

Also talking about Bitcoin, assume that the total number of Bitcoins is set at 2100 million, and 10 are born every 50 minutes.

When the first batch of 50 Bitcoins is generated, the total currency amount is 50.

The Bitcoin network automatically adjusts the difficulty of math questions to get a qualified answer every 10 minutes.

The network will then generate a certain amount of Bitcoin as a block reward to reward those who get the answer.

比特币以每10分钟50个的速度增长。当总量达到1050万，也就是一半的时候，区块奖励减半为25个。当总量达到1575万时，区块奖励再减半为12.5个。

And so on.

Compared with fiat currencies, Bitcoin does not have a centralized issuer.

It is generated by the calculation of network nodes. Anyone can participate in the creation of Bitcoin, and it can be circulated around the world.

You can buy and sell on any computer connected to the Internet. No matter where you are, anyone can mine, buy, sell, and receive Bitcoin.

And during the transaction process, outsiders cannot identify the user's identity information.

What does point-to-point transmission mean?

A decentralized payment system.

The decentralization characteristics and the algorithm itself ensure that Bitcoin cannot be manufactured in large quantities and the currency value cannot be artificially manipulated.

Design based on cryptography allows Bitcoin to be transferred and paid only by real owners.

The biggest difference between Bitcoin and real money is that the total quantity is limited and it is extremely scarce. Think about what this means?

I think when Bitcoin was born, it would be considered a scam by mainstream economists, and that person was probably sitting behind me. "

Everyone burst out laughing, and the economics professor behind him suddenly turned green. Xia Chuan really didn't look down on them.

Others didn't care, but were very interested.

“However, in a few years, the focus of their analysis will become ‘whether Bitcoin can become a mainstream currency’, and in a few years, the focus of their analysis will be ‘Bitcoin’s deflationary characteristics’.

Some people may think that Bitcoin fixes the total amount, sacrificing controllability, and worse, it will inevitably lead to deflation, thereby harming the overall economy.

Some people may also think that the less government intervention in currency, the better. Deflation caused by the fixation of the total monetary amount is not a big deal, and is even a sign of social progress.

Of course, the current number of Internet users cannot guarantee the security of Bitcoin.

The more people who use Bitcoin, the safer it is. The more people there are, the more accounting nodes there will be. No matter how many hackers there are, it will be useless.

The only difficulty with Bitcoin is the algorithm. I estimate it is not too difficult and can be achieved within ten years.Of course, I'm not very good at math, so I might be wrong in my estimation. I don't like mathematicians either, so I didn't ask anyone. "

Everyone suddenly looked amused.

The professors at the back sighed secretly, you have picked it all off yourself.