In the era of information explosion, when you wake up, it’s terrible that the full screen of little red dot always makes your heart scratch the wall. The inner os of patients with deep social fear: "three days visible" is a kind of interruption, it is best to be a "network vacuum person", or goodbye completely, social network.

When social media has quietly become an indispensable part of daily life, modern people are also surrendering their own data unnoticed. Nowadays, businesses that undertake the disappearance or tracking of the Internet have also emerged.People have to think about how to be wary of using their social accounts, or whether to simply escape.

"Connecting" is the tenet of Facebook. "Connecting people’s social vision is my top priority." Zuckerberg said before the hearing in April. At that time, tens of millions of Facebook users found that their private data had been leaked to Cambridge Analytica.

Studies have found that through close self-exposure, people become closer to each other. have onlyPeople have no privacy concerns about using these platforms in depth, and social media can make interpersonal communication so close.Paradoxically, these tools were created to keep people acquainted at a certain distance.

Julie Beck, senior deputy editor of Atlantic Monthly, recently conducted a study to try toVerify how much people look at themselves when using social media, and whether Cambridge analyzes whether corporate scandals have affected their use of Facebook and other platforms.Beck also shared the data with Sauvik Das, associate professor of interactive computing at Georgia Institute of Technology, and Sarita Schoenebeck, director of Living Online Laboratory at the University of Michigan. They also made some basic analysis of some data.

Of course, this survey is not rigorous. Atlantic Monthly sends the survey to readers through Facebook, Twitter, subscription mail and membership projects, so it is not a demographic sampling. Among the 2218 respondents, 82% are white, and most of them are from the United States; Women account for 59%, men for 40%, and 1% of other genders; Respondents are also distributed in a wide range of age groups, but generally tend to be older groups.

The survey results show what people are willing/unwilling to share on social media, the degree of trust in different platforms, and how privacy issues affect user behavior. In addition, Beck also followed up with some readers to learn their detailed views on social media privacy issues.

Overall, 78.8% of the respondents indicated that they were "very" or "somewhat" worried about their information privacy on social media; 82.2% said they would conduct self-censorship on social media. Das analysis mentioned that older people are more likely to conduct self-censorship because of privacy concerns than younger people, but for all age groups, the proportion is 75% or more. In this survey,"Self-censorship" is defined as "users will prevent themselves from publishing content they want to share for fear of privacy disclosure".

David Garvey, a 27-year-old sales executive working in Boston, began to pay attention to self-censorship before Cambridge Analytica broke out. The reason is that David once posted a photo of drinking in high school on Facebook, and his friend’s mother complained to the principal after seeing it.

"Through that,I realized that anything posted on social media would be watched by others at any time."Garvey said," so I hardly send anything.Anything sent out may be publicly consumed.I try to avoid this situation,Keep your social life in intimate circles.Garvey said that he was not really worried about privacy on social media because he was careful enough about what he posted.

Among the respondents,Facebook is currently the most used but least trusted social network.57.9% of platform users said that they "almost don’t trust" Facebook or "don’t trust" Facebook’s protection of personal information privacy. Respondents have different attitudes towards other platforms such as Twitter, LinkedIn, YouTube, Pinterest and Snapchat. Most of them are neutral or uncertain, and Facebook’s Instagram has a higher degree of trust. Several interviewees said that they know that Instagram belongs to Facebook, but they feel that most of the pictures shared on Instagram are not so easy to be used.

A Facebook spokesperson mentioned to Beck in an email that,In the past few months after the Cambridge Analytica scandal broke out in March, the company did not find any significant impact on user behavior."What we have seen is that people are more concerned about data privacy and understand their control and choice." In order to let users better "control" the privacy of their accounts, Facebook provides more concise privacy settings, and plans to develop a "history cleaning" function, so that users can delete data collected from external resources of Facebook.

However, some people began to think about how to use or whether to use Facebook after analyzing the company incident in Cambridge. In Beck’s survey, 99% of the respondents said they knew about the incident. Such a high proportion is certainly not unusual. After all, the survey was mainly aimed at readers of Atlantic Monthly, which paid close attention to this scandal. Among them,41.9% of people said that they changed their behavior of using Facebook because they knew this news, mainly because they were more careful about what they posted.But Das reminded,"When it comes to privacy, people often say one thing and do another."

A small number of voices (9.6%) said that they deleted or frozen their Facebook accounts after the scandal broke out.After the Cambridge Analytica incident, Facebook refused to provide the average number of accounts that people freeze or delete every month.

Janice Riggs, a blogger in Chicago, deleted her Facebook account after hearing about the incident. "It’s just one thing I can get rid of in my life," she said. "I don’t use Facebook and I don’t believe it, so I just closed my account, and so did my husband. But I also know people who say that they will not really completely abandon Facebook. " In addition, Riggs also mentioned that it is still very troublesome to figure out how to delete Facebook account, and she finally searched a lot of operation guides on Google.

A small percentage (25.6%) said that theyAfter analyzing the company events in Cambridge, I changed my usage behavior on other social media platforms, mainly by becoming more careful, sending less things or changing privacy settings.

In addition to Cambridge’s analysis of the impact of corporate events, on the whole,Respondents said that the content they posted on social media was not as personal as it was five years ago.A total of 60% people said that the content they posted was "very impersonal" or "relatively impersonal", but 25.7% people remained the same.

In 2016, The Information reported that, at least on Facebook, original personal sharing (compared with emoticons or links) is decreasing. API)2015 survey by the American Journalism Institute (API) found that millennials pay more attention to privacy issues than in the past.

"I think people are increasingly accepting that social media is a part of life." Das said. This is also reflected in himself. Das found himself sharing work updates or major personal events on Facebook. "In the past, I only posted irrelevant content."

As the freshness of social media has passed and its practicality has become stronger, perhaps people will realize more and more that private information is the price paid when using social media. Of course, some people don’t care about it.

"If Facebook wants to extract my data to improve the whole algorithm, just do it." Garvey said, "I think this will bring net benefits to society. These data are valuable, and more constructive insights can be found from them, not harmful. "

"mark zuckerberg is a genius of Facebook," said Shirley O’Key, a 98-year-old retired teacher living in California. "He has admirable goals, and he wants to provide communication channels for the world. I have great confidence in his sincerity in doing these things. Of course, he was also blocked, because everyone said he didn’t protect his privacy. However, we should realize that nothing in the world is private. "

Maybe people are not ignorant, just confused for a while. Beck’s colleague Alexis Madrigal pointed out that,The development of Facebook will not be hindered. It has grown and is very important to the lives of too many people. No negative news can really affect it.Facebook is unique, at least in terms of necessity. In Beck’s survey, most Facebook users (68.6%) said that without Facebook, their social life would be "a little", "average" and "great". For other social media platforms, most people’s attitude is that social life without it will "not suffer at all".

Regina Goodrich, a 26-year-old retail worker in Florida, said that she had frozen her Facebook account about five times in the past five years, but she couldn’t help but use it again. "I’m probably too afraid to miss something." Goodrich said. But recently, she completely deleted her account.It’s not because of Cambridge Analytica’s scandal, but because Facebook makes her feel too anxious. However, "privacy concerns are also one of the reasons."

However, in this survey, most people still reflect that they will not change their behavior of using social media because of this scandal.

Taylor Moore, a 22-year-old digital marketer in Chicago, said that Facebook is her "main social network" and she uses Facebook Messenger more than SMS. "If I have to delete some apps, deleting Facebook will definitely cause heavy losses." For Cambridge Analytica, Moore thought it was more like a "violation", and she didn’t change her usage habits because of it.

"The Cambridge Analytica incident is not the first time Facebook has fallen into a privacy storm." Schoenebeck said, "This kind of news has been breaking out for ten years. Every time we meet, people seem to think,’ This time it’s true, we must stay away from Facebook’. But then people forgot about it. Facebook is almost like a public tool, because people, especially adults, feel that they have to use it.So I don’t think people will associate using Facebook with trusting it.After all, many institutions and organizations are using it, such as workplaces, schools, community centers, churches, etc. People will miss many things if they don’t use it. "

Although the invasion of privacy will cause some people to completely quit some platforms, from a macro perspective, the dominant position of social media will not be shaken."It seems impossible to stop using the existing platform and return to the traditional social ways in the past." Das said, "We can’t stop using social media because they have completely changed the way we socialize, at least in this country."

On the contrary, if we continue to rely on social media to maintain relationships, then privacy violations that damage trust may lead to chilling effect. People will not give up social media, but they will use it more quietly, carefully and less personally. Social media is not a good tool for real connections.

At 10: 30 am on August 8, at the entrance of Zhongfu Shanghai Duty Free Shop, a large number of customers lined up to shop in the store. The Paper reporter Zang Mingtu

Customers with self-service customs clearance can’t shop, the price advantage is questioned, and the queue order at the checkout counter is not ideal … Despite all kinds of complaints, the popularity of Zhongfu Shanghai Duty Free Shop (hereinafter referred to as "Duty Free Shop"), which started trial operation at 10 am on August 8, is bursting.

The largest duty-free shop in downtown Shanghai is located at 889 Square, yueda, Caojiadu, Jing ‘an District. Before 10 o’clock, there was a long queue of nearly 200 people at the entrance of the duty-free shop. When the door opens at 10 o’clock, after the first batch of customers enter the store, the store will start to restrict the flow, and a group of customers will enter the store about every 15 minutes.

On the afternoon of the same day, the person in charge of yueda 889 Square told the reporter of The Paper (www.thepaper.cn) that customers must enter the duty-free shop with an appointment ticket tomorrow. There are more than 1000 reservation tickets for tomorrow, which were distributed at 14: 00 on the same day. Customers who don’t have an appointment voucher can get an appointment voucher the day after tomorrow at the duty-free shop.

Self-service customs clearance customers cannot check out.

According to the on-site reminder, the shopping objects in duty-free foreign exchange goods are China tourists with passports, including diplomats, returned overseas students, foreign aid workers, laborers, ocean-going crew members and public servants with official passports in diplomatic institutions. Passengers of China nationality who have reached the age of 16 and entered the country with their passports can buy duty-free foreign exchange goods within the limited value set by the customs at the duty-free shop within 180 days from the date of entry.

Shopping identification cards issued by duty-free shops to customers. The Paper reporter Zang Mingtu

When shopping in duty-free shops, you must first go to the service desk for examination with your passport and other documents and get a shopping identification card. The on-site staff reminded customers that even if they didn’t shop on the same day, they used up the "one-time" opportunity in "one-time purchase of duty-free goods within the limits set by the customs with passports within 180 days from the date of entry", that is, they could not come to buy again.

Duty-free shops require passports to have entry stamps, which makes many self-service customs clearance customers lose "one-time" shopping opportunities.

Recently, the border inspection department has fully realized self-service customs clearance at terminals T1 and T2 of Shanghai Pudong Airport. Inbound passengers with China electronic passports and Hong Kong and Macao residents’ passes to and from the Mainland can complete the self-service customs clearance procedures within 12 seconds. Since there is almost no need to queue up, self-service customs clearance at entry has become the first choice for passengers with China electronic passports to return to China recently. Because of the self-service customs clearance, these passengers have no entry stamps on their passports.

On August 8th, a reporter from The Paper saw in the duty-free shop that many customers were stuck in front of the checkout counter because their passports didn’t have entry stamps, so they couldn’t check out and pick up the goods.

"Since the passport for self-service customs clearance cannot be purchased (duty-free shop goods), why did you pass the inspection with the same passport at the beginning? So I missed the shopping opportunity of duty-free shops. What should I do? " A customer questioned.

In the face of similar dissatisfaction from many customers, the cashier staff still insisted: "Shopping must have an oval entry stamp with China border inspection cover, but we can’t use electronic stamps here.When you (the customer) return to China next time, ask the border inspector to put a stamp on the electronic sign. "

In this regard, some customers spit out: "It was originally Bali who traveled back to China to replenish some goods, queued for half an hour to enter the store, queued for passport inspection, selected goods, came to the cashier, and the cash register was down, and the queue arrived, only to say that the passport for self-service customs clearance could not be purchased, and also said that it was not common to go abroad."

Some customers said: "Although there is no entry stamp for entry self-service customs clearance, I have an exit stamp, which is within 180 days, and I am standing here now. Can’t I prove that I have entered the country?"

The Paper reporter noticed that some customers are ready to "rub" other people’s passports for shopping after selecting goods. For such "private cooperation", duty-free shop staff did not interfere.

Except for many customers who can’t pay for self-service customs clearance, the cash register on the second floor of the duty-free shop was down for a time, which led to the longer and longer queue of customers paying bills. Moreover, due to the circular structure of the duty-free shop cashier, many later customers could not find the end of the queue. The on-site staff reminded customers to queue orderly, but when customers asked where the end of the queue was, the staff also said that they didn’t know.

Some purchasing behaviors have legal risks.

The Paper reporter noticed that some customers took pictures of goods in duty-free shops and started a "purchasing".

In this regard, Ge Zhihao, a lawyer of Beijing Guantao (Shanghai) Law Firm, said that the duty-free shops opened in urban areas are not "completely and unconditionally open" to domestic citizens, but are accompanied by preconditions, including the purpose of the goods purchased by consumers here and the total value of the goods purchased.

According to the law, the purpose of setting up duty-free shops is to take care of the reasonable needs of individuals to import goods for their own use, and then to exempt consumers from customs duties, value-added tax, consumption tax, etc. The starting point is to make it clear that the ultimate purpose of goods purchased by individuals is not to put them in circulation. Secondly, the customs also clearly stipulates the amount of personal tax exemption, mainly based on the announcement of the General Administration of Customs (No.54, 2010) that goods for personal use, except tobacco products, alcoholic products and 20 kinds of goods that should be taxed by the state, can enjoy tax exemption within a total value of 5,000 yuan.

Ge Zhihao believes that "personal purchasing" should be treated differently in three situations. First, purchasing is essentially a personal consumption, and then the goods are donated, so under the premise that the total value of the purchased goods does not exceed the limit, this behavior is legal. Secondly, assuming that the ultimate goal of purchasing is to seek economic benefits by reselling related goods in the name of personal consumption, it is essentially a sales behavior, obviously not the "convenience" object of tax exemption policy, but should be regulated by relevant tax laws in China. Third, the so-called "purchasing" means personal consumption under the guise of someone else’s passport, so because the actual consumers themselves do not have the qualification to enjoy the exemption policy, their consumption behavior is suspected of tax evasion.

In addition, according to the relevant provisions of the criminal law, if an individual fails to declare a large amount of tax payment by deception or concealment, accounting for more than 10% of the taxable amount, he will also be suspected of tax evasion. Therefore, some "personal purchasing" behaviors have great legal risks.

You must enter the store with an appointment ticket tomorrow.

On August 8, some customers suggested that the goods in duty-free shops were not cheap.

For example, a customer told the The Paper reporter that the price of a suit of a certain brand of cosmetics in the duty-free shop is 698 yuan. "This price, don’t compare with the origin of the United States, it has no price advantage over Hong Kong." Another customer said that taking a backpack of a certain brand as an example, the price of duty-free shops exceeds that of 1000 yuan, and a shopping mall in Jing ‘an Temple nearby is on sale. The discounted price of backpacks is around 600 yuan. "Of course, it is not exactly the same style, but the style is similar."

Regarding the price advantage of duty-free shops, the shop assistant said that cosmetics are about 30% cheaper than counters in Shanghai; Compared with the duty-free shops in Pudong Airport, some goods are expensive and some are cheap.

In addition, some customers told The Paper that there is milk powder on the second floor of the duty-free shop, which is much cheaper than the market price, but the brand is single. Take a section of milk powder as an example. The price of duty-free shop is 280 yuan, and the market price is 346 yuan. For the single brand of milk powder, the salesperson said that because the quality of milk powder of this brand is better. However, many customers told The Paper that the baby at home is not drinking this brand of milk powder, and they are not going to change the milk powder for the baby, so they are not going to buy it.

On the first day of opening, the largest duty-free shop in downtown Shanghai was full of popularity, despite the fact that customers with self-service customs clearance could not shop, the queuing order at the checkout counter was not ideal, and the price advantage was questioned by customers.

The person in charge of yueda 889 Square, where the duty-free shop is located, told the The Paper that a large number of customers lined up outside the duty-free shop on the first day of opening.Customers must enter the duty-free shop with an appointment voucher tomorrow. Reservation tickets were issued from 12: 00 on the same day and were issued at 14: 00, with more than 1,000 tickets issued. Customers who don’t have an appointment voucher can get an appointment voucher the day after tomorrow at the duty-free shop.

　　The goal of "double carbon" puts forward new requirements for municipal solid waste treatment and high-quality urban development. The low-carbon treatment of domestic waste is an important livelihood project, and it is the key support to accelerate the overall green transformation of economy and society and promote the green and high-quality development of cities. The Guiding Opinions on Accelerating the Establishment and Improvement of a Green and Low-carbon Circular Economic System issued by the State Council has clearly defined the treatment of domestic waste. "peak carbon dioxide emissions Action Plan before 2030" clearly puts forward to "vigorously promote the reduction and recycling of domestic waste". In the whole process from the generation, collection, removal and final treatment of municipal solid waste, there is a carbon emission that can not be ignored, which is an important aspect that can not be ignored for the city to steadily promote carbon neutrality in peak carbon dioxide emissions. Therefore, it is of great significance to accelerate the low-carbon treatment of municipal solid waste, and there is great potential for carbon emission reduction in the whole process from domestic waste production to treatment.

　　

　　At present, due to the unreasonable and low-carbon production and lifestyle, the amount of urban garbage is still growing rapidly. To strengthen the low-carbon treatment of municipal solid waste, we should adopt a more scientific and reasonable technical and policy path, start with source reduction, reduce the generation of kitchen waste, paper and plastic waste, control the carbon emission in the garbage recovery and removal process, and effectively reduce the carbon emission in the whole life cycle of municipal solid waste, which will be more helpful to promote the carbon emission reduction of urban life, promote the green and high-quality development of cities, and accelerate the realization of the "double carbon" goal.

　　

　　Reduce with kitchen waste

　　Be a prerequisite

　　

　　Kitchen waste usually accounts for more than half of municipal solid waste and contains a lot of water, which is the prerequisite and important source to promote the low-carbon treatment of municipal solid waste. If domestic garbage is mixed with other garbage, it will seriously affect the post-treatment efficiency, reduce the energy recovery efficiency and increase the carbon emission during the treatment. Reducing kitchen waste from the source is the key path to reduce the carbon emission of municipal solid waste. First of all, we should actively promote clean vegetables to enter the city, and guide enterprises to complete vegetable grading, cutting and cleaning in vegetable production areas as far as possible through publicity and guidance, financial subsidies and technical improvement, so as to reduce the amount of kitchen waste entering the city from the source. Secondly, the enterprise responsibility system should be established, and the responsibilities of vegetable wholesale and retail enterprises, food processing enterprises and catering enterprises in the reduction of kitchen waste should be clearly defined, and the corresponding rewards and punishments should be given to the degree of completion of enterprises, so as to maximize the on-site disposal of garbage and reduce the generation rate of kitchen waste to a minimum. Third, promote the special channels and equipment for kitchen waste treatment in key enterprises of kitchen waste, reduce the water content of kitchen waste and reduce the difficulty of final treatment. Fourth, encourage citizens to control the total amount of food they buy each time, with the principle of eating enough, eating well and not wasting; Encourage citizens to implement the CD-ROM action, pay attention to health and wellness, avoid waste on the tip of the tongue, and do a good job in special recycling of household kitchen waste.

　　

　　Reduce plastic waste with waste paper

　　Be a key area

　　

　　Waste paper and plastics are the fastest growing parts of municipal solid waste, and they are also the types of waste with the highest carbon content per unit mass. Because both of them are industrial products, they will also produce a lot of life-cycle carbon emissions in their production process. The rapid growth of paper plastics will bring great hidden dangers to control the carbon emission of domestic garbage. From the aspects of product design, manufacturing and use, it is a long-term strategy to strictly control the production of paper plastic waste. First of all, the producer responsibility system should be established. From the perspective of product design, the corresponding reduction principles and targets should be formulated for product design and production enterprises. Consumer goods and product packaging design and production enterprises should be required to minimize the use of paper, plastic and other packaging products in product design, and the packaging design should be as conducive to recycling as possible. Secondly, reduce carbon emissions in the production process of plastic paper, actively innovate the production process, adopt low-carbon production process, and reduce energy consumption. Thirdly, reduce the garbage generated during the use of paper plastic products, promote enterprises and institutions to realize paperless office, and really reduce the use of paper in the office process; Promote consumer enterprises and consumers to reduce the use of paper plastic products such as disposable plates through policies such as separate charges for disposable tableware; Encourage the use and promotion of degradable corn plastics and biological products by reducing the production water fee.

　　

　　To strengthen the classification of domestic waste.

　　Be an important starting point

　　

　　Carrying out domestic waste classification is the only way to reduce urban environmental pollution, reduce resource and energy consumption, build a good living environment, and promote the green, high-quality and sustainable development of the city. We should scientifically guide residents to strengthen the classification of domestic waste, reduce the negative impact on the ecological environment, improve the utilization rate of resources, and form a green and low-carbon lifestyle. Scientific classification and recovery of domestic waste is a necessary way for recycling resources and low-carbon treatment at the end, which can effectively improve the recycling rate of resources and reduce carbon emissions. We should speed up the establishment and improvement of the incentive system for domestic waste sorting and recycling, encourage more enterprises to participate in waste sorting, recycling operation and technological innovation, and provide life services such as door-to-door sorting to realize the life cycle service of waste recycling; Establish an incentive mechanism for urban residents’ garbage sorting, introduce and improve the point system, and realize garbage recycling through mobile phone applications, so as to obtain corresponding points and stimulate the enthusiasm and initiative of citizens to participate in sorting and recycling; Introduce new garbage sorting equipment, such as smart trash can, intelligent induction broadcasting system, "bag breaker" and automatic sorting station, to help residents realize garbage sorting more conveniently. At the same time, establish a strict punishment mechanism, and strengthen supervision and punishment for acts that do not classify garbage as required. In addition, strengthen the education and publicity of domestic waste classification and green and low-carbon development, so that the concept of green, low-carbon and environmental protection is deeply rooted in the hearts of the people.

　　

　　Carbon emission reduction by garbage removal

　　Be the key link

　　

　　Carbon emission reduction of garbage removal is an indispensable key link in garbage disposal and an important hub connecting garbage classification, recycling and final disposal. We should promote the development and use of new energy transportation equipment, replace closed garbage transportation vehicles, and effectively reduce the carbon emissions of transportation equipment. Improve the efficiency of intermediate transportation of garbage, systematically design the placement positions of trash cans, closed stations and transfer stations, optimize the garbage removal lines and methods, and establish a scientific and reasonable urban garbage removal system. Strengthen the environmental sanitation management of garbage transfer stations, improve the transfer efficiency of urban domestic garbage, encourage garbage recovery and removal enterprises to use big data technology to provide new garbage removal services such as online booking and door-to-door recycling, comprehensively optimize the garbage removal process, and promote the green and low-carbon garbage removal link.

　　

　　To innovate the final treatment method

　　For strong support

　　

　　As the most direct carbon emission link in the process of domestic waste recycling, the classification degree, water content and treatment method of waste will affect the carbon emission of final treatment. We should take innovative final treatment methods of municipal solid waste as a strong support, adopt advanced, green and low-carbon treatment technologies and methods, speed up the elimination of the traditional simple landfill mode, and effectively promote the recycling and low-carbon treatment in the final treatment process by more resource-intensive, green and low-carbon, recycling and eco-friendly treatment methods. On the one hand, we should rationally plan and establish a comprehensive domestic waste treatment base, optimize the final treatment structure of domestic waste such as incineration power generation, sanitary landfill and biological fermentation, realize zero landfill of municipal waste as soon as possible, introduce new generation information technologies such as big data and artificial intelligence to enhance the intelligent level of waste treatment equipment, improve waste terminal treatment equipment and improve the efficiency of waste terminal treatment. On the other hand, we should improve the power generation efficiency of garbage incineration and biogas production efficiency by fermentation, introduce special equipment such as kitchen waste pretreatment and low calorific value garbage incineration which are more suitable for classified garbage treatment, and use new treatment technologies such as garbage pyrolysis and plasma treatment to improve the energy output efficiency of electricity, biogas and hot steam, realize smarter and more efficient energy recycling, promote traditional energy substitution, reduce carbon emissions in energy production, and promote urban green, low-carbon and high-quality development. (The first author is an assistant researcher at the Institute of Urban Studies of Beijing Academy of Social Sciences, and the second author is the director and researcher of the Institute of Urban Studies of Beijing Academy of Social Sciences.)

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