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This will not stop Google from gathering data when you search. To do that you would need to block Google cookies completely. However, while it will still gather the data, Google will not use it to serve targeted ads or do anything other than use it for internal purposes. Also, with Web History disabled, your data is at least partially anonymized after 18 months (if you leave Web History on, Google will keep your search records indefinitely).

First sign into your Google account and head to the history page. Click the button labeled Remove all Web History. Then click Okay to confirm. Note that this also pauses your web history going forward, and Google won't start listening to your history again unless you let it.

in this case, however, a little time spent changing your settings can provide invaluable peace of mind knowing that Google can't exploit your personal tendencies for its own purposes.

On the negative side, bear in mind that while this won't prevent Google from making search suggestions, it will prevent you from getting personalized suggestions based on your previous searches.

“Our consumption of content isn’t synchronous,” he said. “Things are interesting to a small group, a cluster of friends or on Reddit — then they die.” He continued: “Then they pick up and go massive. There are these little ripple effects all around the Web, little waves that converge in a pool and make big waves.”

present shock keeps us suspended in a state of constant disarray, and causes us to prioritize the recent over the relevant and the new instead of the most important.

The way we use technology could be reshaping our sense of time and urgency. Douglas Rushkoff, the author of “Present Shock: When Everything Happens Now,” describes present shock as the stupefaction that overtakes people as they try to keep up with the never-ending onslaught of status updates, photo feeds and looping videos constantly refreshing before their eyes.

THERE are other signs to indicate a replay aesthetic is coming to the Web. For example, the latest version of the iPhone’s mobile software will include the ability to capture video in slow motion.

the medium of the loop — either in a GIF, a short clip posted to Vine, or Instagram photo- and video-sharing applications — has become a crucial framework for transmitting information. It mimics the way we remember — by repetition — and future tools could make use of that to understand not only how we transmit information but also how we retain it.

Perhaps the replay Web, by allowing us to constantly revisit and reconsider the recent past, can help us find new meaning in it.

The company made the changes, executives said, because Google users are asking increasingly long and complex questions and are searching Google more often on mobile phones with voice search.

The algorithm also builds on work Google has done to understand conversational language, like interpreting what pronouns in a search query refer to. Hummingbird extends that to all Web searches, not just results related to entities included in the Knowledge Graph. It tries to connect phrases and understand concepts in a long query.

The outcome is not a change in how Google searches the Web, but in the results that it shows. Unlike some of its other algorithm changes, including one that pushed down so-called content farms in search results, Hummingbird is unlikely to noticeably affect certain categories of Web businesses, Mr. Sullivan said. Instead, Google says it believes that users will see more precise results

Yahoo! News — the biggest news site on the Web — is personalized, and even mainstream sites like those of the New York Times and the Washington Post are giving more space to personalized recommendations. As Google executive chairman Eric Schmidt has said, "It will be very hard for people to watch or consume something that is not tailored for them."

Until now, the assumption has been that they will answer truthfully based on their own experiences. In a post-ChatGPT world, though, academics can no longer make that assumption. Given the mostly anonymous, transactional nature of the assignment, it’s easy to imagine a worker signing up to participate in a large number of studies and outsource all their answers to a bot. This “raises serious concerns about the gradual dilution of the ‘human factor’ in crowdsourced text data,” the researchers write.

“This, if true, has big implications,” Clark writes. “It suggests the proverbial mines from which companies gather the supposed raw material of human insights are now instead being filled up with counterfeit human intelligence.”

A second, more worrisome study comes from researchers at the University of Oxford,  University of Cambridge, University of Toronto, and Imperial College London. It found that training AI systems on data generated by other AI systems — synthetic data, to use the industry’s term — causes models to degrade and ultimately collapse. While the decay can be managed by using synthetic data sparingly, researchers write, the idea that models can be “poisoned” by feeding them their own outputs raises real risks for the web

that’s a problem, because — to bring together the threads of today’s newsletter so far — AI output is spreading to encompass more of the web every day.“The obvious larger question,” Clark writes, “is what this does to competition among AI developers as the internet fills up with a greater percentage of generated versus real content.”

In The Verge, Vincent argues that the current wave of disruption will ultimately bring some benefits, even if it’s only to unsettle the monoliths that have dominated the web for so long. “Even if the web is flooded with AI junk, it could prove to be beneficial, spurring the development of better-funded platforms, he writes. “If Google consistently gives you garbage results in search, for example, you might be more inclined to pay for sources you trust and visit them directly.”

the glut of AI text will leave us with a web where the signal is ever harder to find in the noise. Early results suggest that these fears are justified — and that soon everyone on the internet, no matter their job, may soon find themselves having to exert ever more effort seeking signs of intelligent life.

people spend about as much time in apps as they do on the desktop and mobile webs combined.

The mobile web has exploded. This is due to the falling cost and rising quality of smartphones. Now, both Apple and Google have huge numbers of great apps, and people love them.

a good chunk of what we might have called dark social visits are actually Facebook mobile app visitors in disguise.

Chief among the non-gaming apps is Facebook. They’ve done a remarkable job building a mobile app that keeps people using it.

beginning last October, Facebook made changes in its algorithm that started pushing massive amounts of traffic to media publishers. In some cases, as at The Atlantic, where I last worked, our Facebook traffic went up triple-digit percentages. Facebook simultaneously also pushed users to like pages from media companies, which drove up the fan-counts at all kinds of media sites. If you see a page with a million followers, there is a 99 percent chance that it got a push from Facebook.

when people are going through their news feeds on the Facebook app and they click on a link, it’s as if someone cut and pasted that link into the browser, meaning that the Facebook app and the target website don’t do the normal handshaking that they do on the web. In the desktop scenario, the incoming visitor has a tout that runs ahead to the website and says, “Hey, I’m coming from Facebook.com.” In the mobile app scenario that communication, known as the referrer, does not happen.

Facebook—which every media publisher already knows owns them—actually has a much tighter grip on web traffic than anyone had thought. Which would make their big-footing among publishers that much more interesting. Because they certainly know how much traffic they’re sending to all your favorite websites, even if those websites themselves do not.

Whenever you go to a website, you take along a little profile called a “user agent.” It says what my operating system is and what kind of browser I use, along with some other information.

A story’s shareability is now largely determined by its shareability on Facebook, with all its attendant quirks and feedback loops. We’re all optimizing for Facebook now,

the social networks—by which I mostly mean Facebook—have begun to eat away at the roots of the old ways of sharing on non-commercial platforms.

what people like to do with their phones, en masse, is open up the Facebook app and thumb through their news feeds.

Solutions to our leaky privacy system tend to focus on transparency and control — that our best hope is knowing what our data is being used for and choosing whether to participate. But a challenge to that conventional wisdom emerges in his research. Giving users control may be an essential step, but it may also be a bit of an illusion.

personal data is what fuels the barons of the Internet age. Mr. Acquisti investigates the trade-offs that users make when they give up that data, and who gains and loses in those transactions. Often there are immediate rewards (cheap sandals) and sometimes intangible risks downstream (identity theft). “

“The technologist in me loves the amazing things the Internet is allowing us to do,” he said. “The individual who cares about freedom is concerned about the technology being hijacked, from a technology of freedom into a technology of surveillance.”

EARLY in his sojourn in this country, Mr. Acquisti asked himself a question that would become the guiding force of his career: Do Americans value their privacy?

If we have something — in this case, ownership of our purchase data — we are more likely to value it. If we don’t have it at the outset, we aren’t likely to pay extra to acquire it. Context matters.

“What worries me,” he said, “is that transparency and control are empty words that are used to push responsibility to the user for problems that are being created by others.”

We are constantly asked to make decisions about personal data amid a host of distractions, like an e-mail, a Twitter notification or a text message. If Mr. Acquisti is correct, those distractions may hinder our sense of self-protection when it comes to privacy.

His latest weapon against distraction is an iPad application, which lets him create a to-do list every morning and set timers for each task: 30 minutes for e-mail, 60 minutes to grade student papers, and so on.

it is not surprising that he is cautious in revealing himself online. He says he doesn’t feel compelled to post a picture of his meals on Instagram. He uses different browsers for different activities. He sometimes uses tools that show which ad networks are tracking him. But he knows he cannot hide entirely, which is why some people, he says, follow a policy of “rational ignorance.”

The online advertising industry insists that the data is scrambled to make it impossible to identify individuals.

Mr. Acquisti offers a sobering counterpoint. In 2011, he took snapshots with a webcam of nearly 100 students on campus. Within minutes, he had identified about one-third of them using facial recognition software. In addition, for about a fourth of the subjects whom he could identify, he found out enough about them on Facebook to guess at least a portion of their Social Security numbers.

The point of the experiment was to show how easy it is to identify people from the rich trail of data they scatter around the Web, including seemingly harmless pictures. Facebook can be especially valuable for identity thieves, particularly when a user’s birth date is visible to the public.

Does that mean Facebook users should lie about their birthdays (and break Facebook’s terms of service)? Mr. Acquisti demurred. He would say only that there are “complex trade-offs” to be made. “I reveal my date of birth and hometown on my Facebook profile and an identity thief can reconstruct my Social Security number and steal my identity,” he said, “or someone can send me ‘happy birthday’ messages on the day of my birthday, which makes me feel very good.”

“We have to think about social media in a new strategic way,” he said. “It is no longer something that we can ignore. It is not a place to just wish your friends happy birthday. It is a place of business. It is a place where your career will be enhanced or degraded, depending on your use of these tools and services.”

It’s true there are “extremists on both sides,” but as this Wonk Blog post showed, the percentage of non-centrist Republicans skyrocketed from under 10 percent in the Ford years (less than Democrats) to almost 90 percent today, while the Democratic percentage has stayed basically flat [chart].

What’s more, in the last session (2013-2014), the data shows that 147 House Republicans — more than half the caucus — were more ideologically extreme than the most extreme Democrat in the House. There is simply no comparison between the two partie

But it’s a fact that “balanced” journalism has to ignore. To admit that the political world isn’t balanced would shake their whole belief system to its core. And yet, the shaking seems to have begun

The GOP’s strategic logic is simple and straightforward: If the media is going to split the difference between what Democrats and Republicans say, then if Republicans simply double their demands, suddenly the media, embracing the “sensible center,” will now articulate the old GOP position as the “sensible center,” the “common sense” place to be

Their stubborn adherence to a false balance narrative has, ironically, become an integral part of the GOP’s relentless rightward push. By talking about “government dysfunction” instead of “Republican obstruction,” the media actively helps the most extreme anti-government Republicans thwart any efforts at competent governance and it helps promote their “government is horrible” worldview

There was once a penalty for becoming too politically extreme: one’s actions would be characterized as unrealistic, destructive, heedless of past experience, etc. Sometimes this was justified, sometimes not (as with the Civil Rights movement). But right or wrong, this media practice inhibited radical movements in either direction.

For quite some time now, however, conservative Republicans have realized that by moving right and attacking the media for any criticism, they can turn the media into a tacit ally, forcing them to treat preposterous claims as serious ideas, or even proven facts

Norm’s response underscores the reality of asymmetric polarization, which the mainstream media and most good government groups have avoided discussing — at great costs to the country

Thus, when they were planning to force a government shutdown, a key part of their strategy was spinning the media with a preposterous argument that it was the Democrats who were shutting down the government, even though, as the New York Times reported, the shutdown plan traced back to a meeting early in President Obama’s second term, led by former Attorney General Edwin R. Meese.

What’s more, once the media plays along, it’s a trick that can be used over and over again. One can keep moving farther and farther right indefinitely, pulling the “objective” media along for the ride, every step of the way. (Conservatives even developed an operational model to describe the process, known as the “Overton Window,” explained by a conservative activist here.)

The basis for all this is a cultural illusion that the “nonpartisan” media is somehow objective, philosophically in tune with science.

historically, this is far from true. Up until the late 19th century, American journalism was quite partisan, serving substantial “niche” audiences, sustained by subscriptions.

hen advertising exploded as a revenue source in the early 20th century, a new journalistic model emerged, trying to appeal across parties, while taking care not to anger large advertisers. The broader story is well told by Paul Starr in “The Creation of the Media

Jeremy Iggers incorporates this history into his account of how journalism ethics confuses the purposes of journalism in “Good News, Bad News: Journalism Ethics and the Public Interest.”

Such is the basis for the media’s claims of “objectivity.” Starr’s history explains the forces leading to why this happened.

the blogosphere’s origins were not just Usenet, email lists and the like, they were also the underground press tracing back to IF Stone’s Weekly and George Seldes’ In Fact; the black press, both commercial and movement-based; political journals of the left and right; and so on

These underappreciated traditions provide largely untapped examples of how to do quality political journalism outside of the artificial construct in which false balance is rooted. They point the way forward for us, beyond our current state of asymmetrical dysfunction.

What none of these parents understand is that their children’s and teens’ destructive obsession with technology is the predictable consequence of a virtually unrecognized merger between the tech industry and psychology.

Dr. B.J. Fogg, is a psychologist and the father of persuasive technology, a discipline in which digital machines and apps — including smartphones, social media, and video games — are configured to alter human thoughts and behaviors. As the lab’s website boldly proclaims: “Machines designed to change humans.”

These parents have no idea that lurking behind their kids’ screens and phones are a multitude of psychologists, neuroscientists, and social science experts who use their knowledge of psychological vulnerabilities to devise products that capture kids’ attention for the sake of industry profit.

psychology — a discipline that we associate with healing — is now being used as a weapon against children.

This alliance pairs the consumer tech industry’s immense wealth with the most sophisticated psychological research, making it possible to develop social media, video games, and phones with drug-like power to seduce young users.

Likewise, social media companies use persuasive design to prey on the age-appropriate desire for preteen and teen kids, especially girls, to be socially successful. This drive is built into our DNA, since real-world relational skills have fostered human evolution.

Called “the millionaire maker,” Fogg has groomed former students who have used his methods to develop technologies that now consume kids’ lives. As he recently touted on his personal website, “My students often do groundbreaking projects, and they continue having impact in the real world after they leave Stanford… For example, Instagram has influenced the behavior of over 800 million people. The co-founder was a student of mine.”

Persuasive technology (also called persuasive design) works by deliberately creating digital environments that users feel fulfill their basic human drives — to be social or obtain goals — better than real-world alternatives.

Kids spend countless hours in social media and video game environments in pursuit of likes, “friends,” game points, and levels — because it’s stimulating, they believe that this makes them happy and successful, and they find it easier than doing the difficult but developmentally important activities of childhood.

While persuasion techniques work well on adults, they are particularly effective at influencing the still-maturing child and teen brain.

“Video games, better than anything else in our culture, deliver rewards to people, especially teenage boys,” says Fogg. “Teenage boys are wired to seek competency. To master our world and get better at stuff. Video games, in dishing out rewards, can convey to people that their competency is growing, you can get better at something second by second.”

it’s persuasive design that’s helped convince this generation of boys they are gaining “competency” by spending countless hours on game sites, when the sad reality is they are locked away in their rooms gaming, ignoring school, and not developing the real-world competencies that colleges and employers demand.

Persuasive technologies work because of their apparent triggering of the release of dopamine, a powerful neurotransmitter involved in reward, attention, and addiction.

As she says, “If you don’t get 100 ‘likes,’ you make other people share it so you get 100…. Or else you just get upset. Everyone wants to get the most ‘likes.’ It’s like a popularity contest.”

there are costs to Casey’s phone obsession, noting that the “girl’s phone, be it Facebook, Instagram or iMessage, is constantly pulling her away from her homework, sleep, or conversations with her family.

Casey says she wishes she could put her phone down. But she can’t. “I’ll wake up in the morning and go on Facebook just… because,” she says. “It’s not like I want to or I don’t. I just go on it. I’m, like, forced to. I don’t know why. I need to. Facebook takes up my whole life.”

B.J. Fogg may not be a household name, but Fortune Magazine calls him a “New Guru You Should Know,” and his research is driving a worldwide legion of user experience (UX) designers who utilize and expand upon his models of persuasive design.

“No one has perhaps been as influential on the current generation of user experience (UX) designers as Stanford researcher B.J. Fogg.”

the core of UX research is about using psychology to take advantage of our human vulnerabilities.

As Fogg is quoted in Kosner’s Forbes article, “Facebook, Twitter, Google, you name it, these companies have been using computers to influence our behavior.” However, the driving force behind behavior change isn’t computers. “The missing link isn’t the technology, it’s psychology,” says Fogg.

UX researchers not only follow Fogg’s design model, but also his apparent tendency to overlook the broader implications of persuasive design. They focus on the task at hand, building digital machines and apps that better demand users’ attention, compel users to return again and again, and grow businesses’ bottom line.

the “Fogg Behavior Model” is a well-tested method to change behavior and, in its simplified form, involves three primary factors: motivation, ability, and triggers.

“We can now create machines that can change what people think and what people do, and the machines can do that autonomously.”

Regarding ability, Fogg suggests that digital products should be made so that users don’t have to “think hard.” Hence, social networks are designed for ease of use

Finally, Fogg says that potential users need to be triggered to use a site. This is accomplished by a myriad of digital tricks, including the sending of incessant notifications

moral questions about the impact of turning persuasive techniques on children and teens are not being asked. For example, should the fear of social rejection be used to compel kids to compulsively use social media? Is it okay to lure kids away from school tasks that demand a strong mental effort so they can spend their lives on social networks or playing video games that don’t make them think much at all?

Describing how his formula is effective at getting people to use a social network, the psychologist says in an academic paper that a key motivator is users’ desire for “social acceptance,” although he says an even more powerful motivator is the desire “to avoid being socially rejected.”

the startup Dopamine Labs boasts about its use of persuasive techniques to increase profits: “Connect your app to our Persuasive AI [Artificial Intelligence] and lift your engagement and revenue up to 30% by giving your users our perfect bursts of dopamine,” and “A burst of Dopamine doesn’t just feel good: it’s proven to re-wire user behavior and habits.”

Ramsay Brown, the founder of Dopamine Labs, says in a KQED Science article, “We have now developed a rigorous technology of the human mind, and that is both exciting and terrifying. We have the ability to twiddle some knobs in a machine learning dashboard we build, and around the world hundreds of thousands of people are going to quietly change their behavior in ways that, unbeknownst to them, feel second-nature but are really by design.”

Programmers call this “brain hacking,” as it compels users to spend more time on sites even though they mistakenly believe it’s strictly due to their own conscious choices.

Banks of computers employ AI to “learn” which of a countless number of persuasive design elements will keep users hooked

A persuasion profile of a particular user’s unique vulnerabilities is developed in real time and exploited to keep users on the site and make them return again and again for longer periods of time. This drives up profits for consumer internet companies whose revenue is based on how much their products are used.

“The leaders of Internet companies face an interesting, if also morally questionable, imperative: either they hijack neuroscience to gain market share and make large profits, or they let competitors do that and run away with the market.”

Social media and video game companies believe they are compelled to use persuasive technology in the arms race for attention, profits, and survival.

Children’s well-being is not part of the decision calculus.

one breakthrough occurred in 2017 when Facebook documents were leaked to The Australian. The internal report crafted by Facebook executives showed the social network boasting to advertisers that by monitoring posts, interactions, and photos in real time, the network is able to track when teens feel “insecure,” “worthless,” “stressed,” “useless” and a “failure.”

The report also bragged about Facebook’s ability to micro-target ads down to “moments when young people need a confidence boost.”

These design techniques provide tech corporations a window into kids’ hearts and minds to measure their particular vulnerabilities, which can then be used to control their behavior as consumers. This isn’t some strange future… this is now.

The official tech industry line is that persuasive technologies are used to make products more engaging and enjoyable. But the revelations of industry insiders can reveal darker motives.

Revealing the hard science behind persuasive technology, Hopson says, “This is not to say that players are the same as rats, but that there are general rules of learning which apply equally to both.”

After penning the paper, Hopson was hired by Microsoft, where he helped lead the development of the Xbox Live, Microsoft’s online gaming system

“If game designers are going to pull a person away from every other voluntary social activity or hobby or pastime, they’re going to have to engage that person at a very deep level in every possible way they can.”

This is the dominant effect of persuasive design today: building video games and social media products so compelling that they pull users away from the real world to spend their lives in for-profit domains.

Persuasive technologies are reshaping childhood, luring kids away from family and schoolwork to spend more and more of their lives sitting before screens and phones.

“Since we’ve figured to some extent how these pieces of the brain that handle addiction are working, people have figured out how to juice them further and how to bake that information into apps.”

Today, persuasive design is likely distracting adults from driving safely, productive work, and engaging with their own children — all matters which need urgent attention

Still, because the child and adolescent brain is more easily controlled than the adult mind, the use of persuasive design is having a much more hurtful impact on kids.

But to engage in a pursuit at the expense of important real-world activities is a core element of addiction.

younger U.S. children now spend 5 ½ hours each day with entertainment technologies, including video games, social media, and online videos.

Even more, the average teen now spends an incredible 8 hours each day playing with screens and phones

U.S. kids only spend 16 minutes each day using the computer at home for school.

Quietly, using screens and phones for entertainment has become the dominant activity of childhood.

Younger kids spend more time engaging with entertainment screens than they do in school

teens spend even more time playing with screens and phones than they do sleeping

kids are so taken with their phones and other devices that they have turned their backs to the world around them.

many children are missing out on real-life engagement with family and school — the two cornerstones of childhood that lead them to grow up happy and successful

persuasive technologies are pulling kids into often toxic digital environments

A too frequent experience for many is being cyberbullied, which increases their risk of skipping school and considering suicide.

And there is growing recognition of the negative impact of FOMO, or the fear of missing out, as kids spend their social media lives watching a parade of peers who look to be having a great time without them, feeding their feelings of loneliness and being less than.

The combined effects of the displacement of vital childhood activities and exposure to unhealthy online environments is wrecking a generation.

as the typical age when kids get their first smartphone has fallen to 10, it’s no surprise to see serious psychiatric problems — once the domain of teens — now enveloping young kids

Self-inflicted injuries, such as cutting, that are serious enough to require treatment in an emergency room, have increased dramatically in 10- to 14-year-old girls, up 19% per year since 2009.

While girls are pulled onto smartphones and social media, boys are more likely to be seduced into the world of video gaming, often at the expense of a focus on school

it’s no surprise to see this generation of boys struggling to make it to college: a full 57% of college admissions are granted to young women compared with only 43% to young men.

Economists working with the National Bureau of Economic Research recently demonstrated how many young U.S. men are choosing to play video games rather than join the workforce.

The destructive forces of psychology deployed by the tech industry are making a greater impact on kids than the positive uses of psychology by mental health providers and child advocates. Put plainly, the science of psychology is hurting kids more than helping them.

Hope for this wired generation has seemed dim until recently, when a surprising group has come forward to criticize the tech industry’s use of psychological manipulation: tech executives

Tristan Harris, formerly a design ethicist at Google, has led the way by unmasking the industry’s use of persuasive design. Interviewed in The Economist’s 1843 magazine, he says, “The job of these companies is to hook people, and they do that by hijacking our psychological vulnerabilities.”

Marc Benioff, CEO of the cloud computing company Salesforce, is one of the voices calling for the regulation of social media companies because of their potential to addict children. He says that just as the cigarette industry has been regulated, so too should social media companies. “I think that, for sure, technology has addictive qualities that we have to address, and that product designers are working to make those products more addictive, and we need to rein that back as much as possible,”

“If there’s an unfair advantage or things that are out there that are not understood by parents, then the government’s got to come forward and illuminate that.”

Since millions of parents, for example the parents of my patient Kelly, have absolutely no idea that devices are used to hijack their children’s minds and lives, regulation of such practices is the right thing to do.

Another improbable group to speak out on behalf of children is tech investors.

How has the consumer tech industry responded to these calls for change? By going even lower.

Facebook recently launched Messenger Kids, a social media app that will reach kids as young as five years old. Suggestive that harmful persuasive design is now honing in on very young children is the declaration of Messenger Kids Art Director, Shiu Pei Luu, “We want to help foster communication [on Facebook] and make that the most exciting thing you want to be doing.”

the American Psychological Association (APA) — which is tasked with protecting children and families from harmful psychological practices — has been essentially silent on the matter

APA Ethical Standards require the profession to make efforts to correct the “misuse” of the work of psychologists, which would include the application of B.J. Fogg’s persuasive technologies to influence children against their best interests

Manipulating children for profit without their own or parents’ consent, and driving kids to spend more time on devices that contribute to emotional and academic problems is the embodiment of unethical psychological practice.

“Never before in history have basically 50 mostly men, mostly 20–35, mostly white engineer designer types within 50 miles of where we are right now [Silicon Valley], had control of what a billion people think and do.”

Some may argue that it’s the parents’ responsibility to protect their children from tech industry deception. However, parents have no idea of the powerful forces aligned against them, nor do they know how technologies are developed with drug-like effects to capture kids’ minds

Others will claim that nothing should be done because the intention behind persuasive design is to build better products, not manipulate kids

similar circumstances exist in the cigarette industry, as tobacco companies have as their intention profiting from the sale of their product, not hurting children. Nonetheless, because cigarettes and persuasive design predictably harm children, actions should be taken to protect kids from their effects.

in a 1998 academic paper, Fogg describes what should happen if things go wrong, saying, if persuasive technologies are “deemed harmful or questionable in some regard, a researcher should then either take social action or advocate that others do so.”

I suggest turning to President John F. Kennedy’s prescient guidance: He said that technology “has no conscience of its own. Whether it will become a force for good or ill depends on man.”

The APA should begin by demanding that the tech industry’s behavioral manipulation techniques be brought out of the shadows and exposed to the light of public awareness

Changes should be made in the APA’s Ethics Code to specifically prevent psychologists from manipulating children using digital machines, especially if such influence is known to pose risks to their well-being.

Moreover, the APA should follow its Ethical Standards by making strong efforts to correct the misuse of psychological persuasion by the tech industry and by user experience designers outside the field of psychology.

It should join with tech executives who are demanding that persuasive design in kids’ tech products be regulated

The APA also should make its powerful voice heard amongst the growing chorus calling out tech companies that intentionally exploit children’s vulnerabilities.

During his testimony, Mr. Zuckerberg repeatedly said Facebook has a tool for downloading your data that “allows people to see and take out all the information they’ve put into Facebook.”

Most basic information, like my birthday, could not be deleted. More important, the pieces of data that I found objectionable, like the record of people I had unfriended, could not be removed from Facebook, either.

“They don’t delete anything, and that’s a general policy,” said Gabriel Weinberg, the founder of DuckDuckGo, which offers internet privacy tools. He added that data was kept around to eventually help brands serve targeted ads.

When you download a copy of your Facebook data, you will see a folder containing multiple subfolders and files. The most important one is the “index” file, which is essentially a raw data set of your Facebook account, where you can click through your profile, friends list, timeline and messages, among other features.

Upon closer inspection, it turned out that Facebook had stored my entire phone book because I had uploaded it when setting up Facebook’s messaging app, Messenger.

Facebook also kept a history of each time I opened Facebook over the last two years, including which device and web browser I used. On some days, it even logged my locations, like when I was at a hospital two years ago or when I visited Tokyo last year.

what bothered me was the data that I had explicitly deleted but that lingered in plain sight. On my friends list, Facebook had a record of “Removed Friends,” a dossier of the 112 people I had removed along with the date I clicked the “Unfriend” button. Why should Facebook remember the people I’ve cut off from my life?

Facebook said unfamiliar advertisers might appear on the list because they might have obtained my contact information from elsewhere, compiled it into a list of people they wanted to target and uploaded that list into Facebook

Brands can obtain your information in many different ways. Those include:

■ Buying information from a data provider like Acxiom, which has amassed one of the world’s largest commercial databases on consumers. Brands can buy different types of customer data sets from a provider, like contact information for people who belong to a certain demographic, and take that information to Facebook to serve targeted ads

■ Using tracking technologies like web cookies and invisible pixels that load in your web browser to collect information about your browsing activities. There are many different trackers on the web, and Facebook offers 10 different trackers to help brands harvest your information, according to Ghostery, which offers privacy tools that block ads and trackers.

■ Getting your information in simpler ways, too. Someone you shared information with could share it with another entity. Your credit card loyalty program, for example

I also downloaded copies of my Google data with a tool called Google Takeout. The data sets were exponentially larger than my Facebook data.

For my personal email account alone, Google’s archive of my data measured eight gigabytes, enough to hold about 2,000 hours of music. By comparison, my Facebook data was about 650 megabytes, the equivalent of about 160 hours of music.

In a folder labeled Ads, Google kept a history of many news articles I had read, like a Newsweek story about Apple employees walking into glass walls and a New York Times story about the editor of our Modern Love column. I didn’t click on ads for either of these stories, but the search giant logged them because the sites had loaded ads served by Google.

In another folder, labeled Android, Google had a record of apps I had opened on an Android phone since 2015, along with the date and time. This felt like an extraordinary level of detail.

Historically, U.S. officials, often encouraged by public opinion, have wanted Cherokees to adopt U.S. legal and cultural practices. When not attempting to terminate the tribe, U.S. officials have sided with freedmen whenever tribal citizenship disputes reach U.S. courts. U.S. politicians have also repeatedly threatened to withhold federal money should the Cherokee Nation not grant freedmen citizenship.

Colonists, later U.S. citizens, wanted to acquire Cherokee land and to make Cherokees more like whites in terms of their religious, government and economic practices. That meant that Cherokees would have to abandon their practice of holding land communally, which made land difficult for U.S. settlers to acquire because they could not deal with individuals.

After the war, the U.S. forced the Cherokee Nation to sign the Treaty of 1866. The tribe’s 1839 Constitution, affirming previous laws, had stated that Cherokee citizens must be descended from Cherokees, not their Black slaves. But in this peace treaty, Cherokees agreed to make their former slaves full tribal citizens.

if apps weren’t dominant, would we have a richer variety of digital services from a broader array of companies?

In the early smartphone era, there was a tug of war between technologies that were more like websites and the apps we know today. Apps won, mostly because they were technically superior.

control. Apple and Google dictate much of what is allowed on the world’s phones. There are good outcomes from this, including those companies weeding out bad or dangerous apps and giving us one place to find them.

ith unhappy side effects. Apple and Google charge a significant fee on many in-app purchases, and they’ve forced app makers into awkward workarounds.

You know what’s free from Apple and Google’s iron grip? The web. Smartphones could lean on the web instead.

This is about imagining an alternate reality where companies don’t need to devote money to creating apps that are tailored to iPhones and Android phones, can’t work on any other devices and obligate app makers to hand over a cut of each sale.

Maybe more smaller digital companies could thrive. Maybe our digital services would be cheaper and better. Maybe we’d have more than two dominant smartphone systems

however, consultants to both campaigns said they had bought demographic data from companies that study details like voters’ shopping histories, gambling tendencies, interest in get-rich-quick schemes, dating preferences and financial problems. The campaigns themselves, according to campaign employees, have examined voters’ online exchanges and social networks to see what they care about and whom they know. They have also authorized tests to see if, say, a phone call from a distant cousin or a new friend would be more likely to prompt the urge to cast a ballot.

The campaigns have planted software known as cookies on voters’ computers to see if they frequent evangelical or erotic Web sites for clues to their moral perspectives. Voters who visit religious Web sites might be greeted with religion-friendly messages when they return to mittromney.com or barackobama.com. The campaigns’ consultants have run experiments to determine if embarrassing someone for not voting by sending letters to their neighbors or posting their voting histories online is effective.

“I’ve had half-a-dozen conversations with third parties who are wondering if this is the year to start shaming,” said one consultant who works closely with Democratic organizations. “Obama can’t do it. But the ‘super PACs’ are anonymous. They don’t have to put anything on the flier to let the voter know who to blame.”

Officials at both campaigns say the most insightful data remains the basics: a voter’s party affiliation, voting history, basic information like age and race, and preferences gleaned from one-on-one conversations with volunteers. But more subtle data mining has helped the Obama campaign learn that their supporters often eat at Red Lobster, shop at Burlington Coat Factory and listen to smooth jazz. Romney backers are more likely to drink Samuel Adams beer, eat at Olive Garden and watch college football.

When Google’s algorithm detects a search term for which this distilled information is available, the search engine is trained to go fetch it rather than merely present links to Web pages. “There has been a shift in our thinking,” said Scott Huffman, an engineering director in charge of search quality at Google. “A part of our resources are now more human curated.”

“Our engineers evolve the algorithm, and humans help us see if a suggested change is really an improvement,” Mr. Huffman said.

Ben Taylor, 25, is a product manager at FindTheBest, a fast-growing start-up in Santa Barbara, Calif. The company calls itself a “comparison engine” for finding and comparing more than 100 topics and products, from universities to nursing homes, smartphones to dog breeds. Its Web site went up in 2010, and the company now has 60 full-time employees. Mr. Taylor helps design and edit the site’s education pages. He is not an engineer, but an English major who has become a self-taught expert in the arcane data found in Education Department studies and elsewhere. His research methods include talking to and e-mailing educators. He is an information sleuth.

go this route if you believe privacy is dead, but find social networking too good to miss out on.

While we should be attuned to constraints and their consequences, there are at least four problems with conceptualizing the social media user's dilemma as a version of "if you can't stand the heat, get out of the kitchen".

The efficacy of abandoning social media can be questioned when others are free to share information about you on a platform long after you've left.

Second, while abandoning a single social technology might seem easy, this "love it or leave it" strategy -- which demands extreme caution and foresight from users and punishes them for their naivete -- isn't sustainable without great cost in the aggregate. If we look past the consequences of opting out of a specific service (like Facebook), we find a disconcerting and more far-reaching possibility: behavior that justifies a never-ending strategy of abandoning every social technology that threatens privacy -- a can being kicked down the road in perpetuity without us resolving the hard question of whether a satisfying balance between protection and publicity can be found online

if your current social network has no obligation to respect the obscurity of your information, what justifies believing other companies will continue to be trustworthy over time?

Sticking with the opt-out procedure turns digital life into a paranoid game of whack-a-mole where the goal is to stay ahead of the crushing mallet. Unfortunately, this path of perilously transferring risk from one medium to another is the direction we're headed if social media users can't make reasonable decisions based on the current context of obscurity, but instead are asked to assume all online social interaction can or will eventually lose its obscurity protection.

The fourth problem with the "leave if you're unhappy" ethos is that it is overly individualistic. If a critical mass participates in the "Opt-Out Revolution," what would happen to the struggling, the lonely, the curious, the caring, and the collaborative if the social web went dark?

Our point is that there is a middle ground between reclusion and widespread publicity, and the reduction of user options to quitting or coping, which are both problematic, need not be inevitable, especially when we can continue exploring ways to alleviate the user burden of retreat and the societal cost of a dark social web.

it is easy to presume that "even if you unfriend everybody on Facebook, and you never join Twitter, and you don't have a LinkedIn profile or an About.me page or much else in the way of online presence, you're still going to end up being mapped and charted and slotted in to your rightful place in the global social network that is life." But so long it remains possible to create obscurity through privacy enhancing technology, effective regulation, contextually appropriate privacy settings, circumspect behavior, and a clear understanding of how our data can be accessed and processed, that fatalism isn't justified.

“The intensity of this reorganization will depend, unsurprisingly, on the magnitude of warming.”

researchers seek to predict future impacts of global warming on marine life by examining how the oceans were affected during times of substantial temperature change in the distant past.

Extrapolating from those records, the researchers predicted that even moderate climate change will cause significant disruptions, with local extinctions and species migrations occurring three times more frequently than today.

More severe warming will have a major impact on marine life, with significant disruptions occurring across 50 to 70 percent of the world’s oceans, the authors concluded.

The impacts cannot fail to affect life on land, given the ocean’s role in supporting human populations

“When the temperature of the environment changes, animals and plants change in abundance locally or may move to new locations if the habitat is suitable,”

“These movements ultimately affect the food web and ecology, and if they are rapid, the food web may become uncoupled.”

humans “rely upon the ecosystem services that the interconnected web of life creates.”

M.I.T. students can use OpenCourseWare courses to get a feel for a subject or an instructor, while students at other universities can use them to supplement their own courses. “If you’re taking a course on Pompeii, and you want to know more about volcanoes, we have a course for that,” Ms. Forward said. But while OpenCourseWare students attend the same lectures, and take the same tests as M.I.T. students do, they do not get M.I.T. credit, or an M.I.T. degree.