Is it okay to check AIDS with CDC?

6.

What the stall economy mainly solves is the problem of employment. When people have jobs, there will be fewer idle people. When there are fewer idle people, the society will be stable. When the society is stable, they can concentrate on development

the stall has always been the synonym of "dirty, messy and poor". I believe the snack street next to the university is a picture that everyone can't forget. Eight yuan boiled fish fillets, three yuan Tianchan potatoes, two yuan fried rice cakes, one yuan pearl milk tea... Although it's dirty, messy and bad, it's delicious, cheap and lively. There's also a key point. I'm poor, and I have dozens of yuan around me. Besides the stall, where can I go to suck screws and blow beer

if there is demand, there will be supply naturally. A tricycle and an awning business can be opened. There is no rent, no employee salary, and no fees. As long as the urban management doesn't come to catch up, the income is very objective despite the hard work

However, with the development of the city and the renovation of the city appearance, the stall economy is just like the original psoriasis advertisement, which seems out of place. Students in Hangzhou may have found that the garbage street used to be worth billions of dollars

this process involves huge wealth creation and transfer, and also reflects a city's initial selection of citizens

Most of them are from less developed areas. They have the traditional virtue of diligence and bravery. Through their own efforts, they also have a place in the city. But in the city's iterative upgrading and instrial transfer, the mode of stall economy is not concive to urban construction: you can open a tricycle as a business, a canopy as a shop, and a virtual shop on Taobao. How can I do business with so many shops and commercial complexes and so many residential bottom floor merchants? Of course, liquidity is not concive to management, and food safety is difficult to control. So, either go or rent shops to pay rent. Of course, it's best to buy them, register and apply for certificates, and reorganize them into a regular army

as a result, the cost has doubled. Boiled fish fillet costs 38 yuan, and pearl milk tea costs 10 yuan. Of course, this is also e to the rising prices. The benefits are urban aborigines, developers and local governments, and the costs are naturally absorbed between consumers and vendors

why open the stall economy now? It's because it's the low-level workers who are not competitive and have no savings who are most affected by the epidemic. Some of them may buy less consumer goods. They may have no money to buy vegetables and their children can't go to school. Fortunately, it's compulsory ecation now

to open up the stall economy is to let the originally flowing wealth run in reverse. Although the amount is small, it can accurately reach the most needed people and play the greatest marginal effect

in fact, it can also be seen as an implicit government transfer payment, a small-scale secondary distribution of property under the guidance of the government, but the effect is better than that of the government transfer payment. In the case of direct government subsidies, the most needed people often can not be reached, and the consumption is huge, so the screening work should be handed over to the market

finally, it ends with a sentence from the Premier: there are 600 million people in China, and each person's income is 1000 yuan, which means that if our economics and economic policies can not see this part of people, and our economics lacks attention to ordinary people, it is terrible

7. First of all, I want to explain the principle of virtual currency. Take bitcoin as an example. It is a cryptography currency. Its principle is to give the solution of the irreversible algorithm. After the operation of the irreversible algorithm, the original value of the solution can be obtained, which is a bitcoin. Because of the irreversibility of the algorithm, you can't dece the original value from the solution, so all you can do is try one by one with different values, which is called "mining"
here is an example of "XX coin" algorithm: the original value is a three digit number: ABC, and the password is obtained after encryption algorithm. The first digit is (a + 15) ^ (B + 2) / C, and then the first digit after the decimal point; the second digit is C to the power of (B + 1) + 5.25 * a, and then the first digit after the decimal point; the third digit is (c + 25) multiplied by (B + 43) and divided by the power of a, and then the first digit after the decimal point. Thus, the encrypted data XYZ is obtained. The problem is, even if you know XYZ and the algorithm of the password, you still can't find the original value ABC from XYZ. The only way is to take all kinds of data one by one until there is a solution XYZ (assuming that each ABC in our algorithm can only find a unique XYZ). Well, since XYZ is a three digit number with a range of 0-999, there are 1000 possibilities. We select 10 of them, such as 990-999, as the effective value of "XX currency" to verify. The original value of ABC of these 10 solutions is "XX currency"
since there are only 10 numbers from 990 to 999, there are only 10 original values that can be calculated, that is to say, there are only 10 XX coins in total, and no one can change one. This ensures that the total amount of XX currency is constant and there will be no "inflation". It is the mathematical law that ensures that the total amount remains unchanged. No one can change it, just like no one can change the 11th integer between 1 and 10. To prove his ownership of a XX coin, a digger needs to publish the value calculated by the algorithm, such as 996, to confirm his ownership of the XX coin without disclosing its true value

therefore, the first thing to judge whether a virtual currency is reliable is whether it publishes the algorithm or the source code. Because the algorithm is the fundamental premise to ensure the total amount unchanged and the ownership of the holder
secondly, the currency must be freely tradable. Free trade means to trade with anyone at any time and in any amount. The reason is even simpler. If the state suddenly stipulates that you can only go to the designated store to buy RMB once a month, and each time you can't spend more than 5% of the total amount of RMB you hold, then don't you jump up to revolt< Third, the currency must have a third-party trading platform. As we all know, virtual currency itself is of little value. It is only when you are willing to spend that money on it that it has value. Having a third-party trading platform at least means that everyone agrees with it. Just think, if your unit tells you, after salary does not send RMB, change hair white note, all people must take white note to unit accountant that, according to the exchange rate that day unit formulates change. Do you think your unit is thriving?