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Long prod-ucts
Babbitt founder, famous science fiction writer, won the highest prize in 2006200, 7200, 8 Chinese fiction "galaxy award", in 2011, he was a god on zhihu reply has been everyone relish,
Here are long prod-ucts in block 2018 global chain (hangzhou) speech on the peak BBS:
Long prod-ucts: ladies and gentlemen, good morning!
Today I share with you is what I understand block chain of thinking, in particular, stressed that "this is what I understand," because now everyone is talking about block chain thinking, has our own understanding of block chain each people's mind, I'm not to, so also welcome to comment,
Next I will introduce in several typical problems, why say that the Internet is the mirror image of the chain block which, like the parallel world of the Internet,
The first question, the currency will be replaced by competitors, this problem is very classic, in five years ago, I saw someone ask, five years later, he still ask such a question, this problem is a typical Internet thinking, namely classical thinking, why, Internet thinking is like that, in the early days of the Internet, we see the browser wars, early Kings were later replaced by IE, the history of such instead emerge in endlessly, so what makes you think COINS such things will not be new technology, replaced by a more advanced digital currency,
Block chain should not be regard a kind of software, it is a deal, this is the nature of their differences, first of all, the Internet is often a software project, through relentless patent software needed to build their own barriers, build your own moats, chain blocks, it is a kind of agreement, protocol is a standard, open sharing, to welcome you all to copy the code, I hope more and more people, more and more companies, more and more institutions to use its code,
From the development main body, the software development company, which is a kind of, the company is a for-profit organization, chain blocks, especially chain, and the development of the chain body is often a fund, community groups, loose, it is a non-profit organization, the software does need constant iterative upgrade, in order to ensure the leading in technology, it blocks chain agreements are often very stable, because you need to modify its agreement to cut consensus through, but it is very difficult, the software can be shut down, can stop the maintenance updates, chain block is a start after not stop credit machine, through the comparison of such thinking, we can answer the question of just,
The second question, why do block the underlying protocol has more value chain, this problem has a very interesting phenomenon, you will find that doing now block the development of chain, or technical director, he often no longer claim to be the CTO, claiming the chief scientist of commonly, it reflects the fact that the development of the underlying protocol is now standing on the table, the tables have turned,
From the point of view of value, the Internet application layer below do you usually do is occupying most of the value, the development of the protocol layer of these there is no business income, many are open source organizations through donations to keep the operation of the project, block the value of such distribution chain project, can do the protocol layer holds the core value, why, is because the core developers holds the tokens of absolute division, so the value of it become large,
Traditional business model is to get more profit by raising the production efficiency and block chain, it is a natural built a set of tokens, incentive system, so it is natural with the community, the user or the miners, and the developer community, everyone involved in its maintenance, its packaging, or the update of the code, there is a news recently said IBM block chain development team has 1000 people, seems to be very big, but for block chain and chain project, its developer or tester is far more than 1000 people, because it has a large number of outside developers and testers, may every user, each a miner is its testers,
Third question, also is very classic, why you need to dig, dig can be said to be the focus of public opinion, a lot of people wonder whether it caused a huge energy consumption, whether we can develop a new method to avoid this kind of energy consumption, with technical background is a friend, I recommend you to read this article, is written by Google, an engineer, "the principle of minimum viable block chain," he hindcasting way of investment is needed to explain why, why POW mechanism is already a minimum viable block chain solutions, I use a non-technical background logic to explain, why calculation in block in the chain is very important,
This form, in fact, the real world and digital world, the real world can also be called atomic world, the world or the Internet, the digital world can also be called bit actually relation exists between them is a this mirror, in the real world, things are random, in the digital world, things are pseudo random, in reality there are no two leaves are the same, in the digital world everything all can copy, we say that the real competitive resources, resources are a kind of so-called competitive resources, is a thing what I possess, others can't have,
In the digital world, things are competitive resources, such as a document, I passed on to others, does not like I send a book to others in reality, these two processes are not the same, because I send a document to someone else, my computer is still retain a copy of this document infinitely many, in the digital world, everything is a kind of competitive resources, in the real world is often contend, disorderly, at random, in the digital world is negative entropy, the information explosion, the real world, things tend to follow the normal distribution, like a person's height and weight, not very big, but a neutral curve distribution, in the digital world things often follows power-law distribution, Matthew effect longer tail,
Why we see, the birth of the printing press so great, so meaningful, because actually the past our knowledge and information is a kind of competitive resources, are manuscripts, as "the bible", "secret", then spread knowledge is to rely on the spread of such competitive resource transfer, printing machine, after the birth of human beings for the first time can be put into this kind of knowledge and information can be large-scale replication, or copy the marginal cost of almost zero non-competitive resource, so the Internet is obviously enhanced printing machine, which in turn would also explain why the birth of the COINS so great, this is because in the digital world, we must realize the transfer of such competitive resources is also very difficult,
Just Zhang Yuanchang also introduces the pioneer of encryption currency in the past, why try to establish a digital currency later failed, including David Qiao M, David such people failed, because they do not have to find a way to accomplish the transfer of competitive resources,
Finally, back to the problem of, why want to put into calculation, this problem can also be to ask, so in reality we just copy the same thing, very difficult to replicate the same thing, this thing can be paraphrased as in real life to create perfect crystal is very difficult, if you can produce perfect crystal, that means you can manipulate each atom in the lattice, that, of course, you can copy the same thing, but the third law of thermodynamics tells us that you need to create a perfect crystal near absolute zero, to near absolute zero is requires a huge amount of investment, energy consumption, in turn, through the contrast thinking, we want to realize the resources in the digital world cannot copy, also requires a huge energy consumption, the energy consumption is based on calculation,
What I am going to introduce "impossible" triangle theory, is a safe, efficient, decentralization, between cannot coexist, can only take a second,
This figure the decentralized to the equality and consensus, because of the word decentralized easily reminiscent of distributed books, in fact, decentralized and distributed books there is no essential connection,
We see now block chain field is decomposed into two lines, one route is the pursuit of the safety and efficiency, the current POS, DPOS, DAG, PBFT in taking such a line, the computational, they don't have the consumption of computing resources, another line is POW mechanism, and compared to the original chain, babbitt did the consensus of the proposed mechanism is taking the equality of consensus line,
What is the difference between the two routes, I personally think that safety and efficiency of this line can only be called generalized block chain, or distributed books, because it no longer has a trading irreversible, trading of irreversible why so important, then do some explanation on the following link,
Fourth question, block chain to solve the consensus problem, but did not solve the problem of trust, recently very fire an article, Mr Ali Ming zeng wrote an article, his conclusion, because the chain of blocks is a kind of technology innovation, the trust issue is human nature, technological innovation is unable to solve the problem of human nature, looks very reasonable, but I have reservations on this view, why, because the problem is converted into another same problem, is the trading of block chain and alipay have what different, if you can answer this question, you can answer the question above,
Have what different, the biggest different is the currency of the day, money day is a field in block chain, as the name suggests, it is equal to currency x days, assuming a deal happened 100 COINS, and that 100 dollars in the wallet lay for a month, was destroyed in the deal in January 100 by the currency day, actually we see money day is the time stamp, obviously the traditional third-party payment don't have such fields, even if he write to this field in the database is meaningless, because they are centralized server, different database field can't keep the timestamp synchronicity,
Trading, this is a typical chain trade total amount is 120 COINS, in addition to the 120 COINS, and 8.89 platform destruction also record on the block chain, currency day why is this field is so important, first of all, we see the traditional credit evaluation model, it is often a accumulation mode, pay treasure or taobao, jingdong is this pattern, this is a simplified version of the model, is when you get a bad review, your credit is minus one points, you get a high praise will add a point, if the evaluation is not increase,
This model is what problem, the problem is that it regarded trading as equivalent trading, as an equivalent trade itself is nothing wrong, but the biggest problem is that it does not prevent brush, suppose I have two accounts, due to the transaction cost is almost equal to zero, in theory, can I use the same amount of money between two accounts brush an infinity of credit, which is why WeChat or pay treasure, they all have very large anti-cheating team, it can not fundamentally eliminate the existence of two kinds of professional, is a brush, brush is to give yourself, the other is bad review division, brush give others bad review,
We see if the money "days" to destroy what happens after is introduced into the credit evaluation model, this model is much more a currency day destroy, we threw money day as credit evaluation factor, as a result, we found that the brush credit behavior was no longer set up, is this why? Or 100 dollars, for example, suppose the first deal, also from A to B accounts turned 100 COINS, the 100 COINS lying in her purse for A month, was destroyed in the first deal in January 100 by the currency day, and the two account is my account, are two of my address,
, in turn, I want to brush the credit, the 100 currency into account, A account back to B 100 COINS, although on paper or has been destroyed, but as A result of currency day trading interval is very short, so the second transaction currency day is very small, because of currency x days, day is very small, the second transaction currency day destruction also is very small, even if you give yourself A high praise, is don't have much effect on their credit, the third, fourth, fifth, also, no matter how many pens on credit evaluation can brush up, this is the reason why brush reputably no longer exists,
Brush the same bad review is no longer exists, taobao brush bad review by small give somebody else a bad review, blackmail each other, but because you have to deal with somebody else happen here, need to be with somebody else have amount transfer, through small, money is very small, you bad review to each other almost not posed no influence to its credit,
Block chain on the introduction of "currency day" what does it mean, somewhat akin to find deals thermodynamic arrow, also A deal from A to B accounts, again from B account to account, the two processes are equal, no longer is no longer equivalent, although the COINS are equal, but the corresponding currency days are not equal, can be constructed on the basis of the characteristics of such A not to brush the credit evaluation system, I personally think that credit is still A math problem, is no longer A human problem, why? Because it is over, the more in the process of such A deal is no longer distinguish between the trading of A deal is real and cheating, there is no centralized authority announced it would freeze your account, you can go to A brush, but by mathematical statistics, you will find that the brush credit behavior and the real deal, its distribution is not the same as in mathematics, so the credit is essentially A math problem,
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