Eye-tracking technology now makes it possible for computers to gather staggering amounts of information about individuals as they use the Internet, and draw hyper-accurate conclusions about our behavior as consumers. As the technology becomes more practical, Senior Fellow John Villasenor discusses its benefits and risks.

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• Eye-Tracking Technology and Digital Privacy

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• @ Brookings Podcast: Eye-Tracking Technology and Digital Privacy

Editor’s Note: In the aftermath of the United Kingdom's vote to leave the European Union, we are left with more questions than answers. Dhruva Jaishankar writes that with all the questions about what happens next, there's a bigger question worth asking: What are the implications of Brexit for democracy? Arguably, Brexit represents the first major casualty of the ascent of digital democracy over representative democracy. This piece was originally posted by The Huffington Post.

In the aftermath of the United Kingdom's vote to leave the European Union, we are left with more questions than answers. What kind of relationship will the UK now forge with the EU, and how will that affect economic relations and migration? Will Scotland and Northern Ireland opt to leave? What is the future of British politics, given turbulence within both the Conservative and Labour Parties? Will a successful Brexit set a precedent for other EU members -- perhaps even some eurozone members-- to leave the union? What are the long-term economic consequences of the resulting uncertainty? Will Brexit even happen at all, given the absence of a clear post-referendum plan, the apparent unwillingness of 'Leave' campaign leaders to invoke Article 50 of the Lisbon Treaty, and the fact that the referendum was advisory and non-binding? Answers to these questions will make themselves evident in the coming weeks, months, and years.

[D]igital democracy... has contributed to polarization, gridlock, dissatisfaction and misinformation.

But there's a bigger question worth asking: What are the implications of Brexit for democracy? Arguably, Brexit represents the first major casualty of the ascent of digital democracy over representative democracy. This claim deserves an explanation.

When historians look back at the world of the past 25 years, they will likely associate it not with terrorism or growing inequality but with the twin phenomena of the "rise of the rest" (particularly China and India) and of globalization. Globalization involves the easier, faster and cheaper flow of goods, people, capital and information. One big enabler of globalization is the internet, the global network of networks that allows billions of people to cheaply and easily access enormous amounts of digital information. The rise of service and high-technology industries, trade liberalization, container shipping, and the development of financial markets have also been important enablers, as is the increased ease and lower cost of travel, particularly by air.

Many technology optimists have assumed that globalization would lead to the democratization of information and decision-making, and also greater cosmopolitanism. Citizens would be better informed, less likely to be silenced, and able to communicate their views more effectively to their leaders. They would also have greater empathy and understanding of other peoples the more they lived next to them, visited their countries, read their news, communicated, and did business with them. Or so the thinking went.

[L]eaders only exploit the vulnerabilities of a post-fact world. The conditions have been laid by the digital sphere.

But there has been little to justify such panglossianism. There is some evidence for a correlation between greater information, political democratization and economic progress, in that all three have advanced steadily, if at different paces, over the past two decades. But that correlation is weak. Instead, digital democracy -- the ability to receive information in almost real time through mass media and to make one's voice heard through social media -- has contributed to polarization, gridlock, dissatisfaction and misinformation. This is as equally applicable to the countries in which modern democracy took root -- in the United States and Europe -- as it is to India, the biggest and most complex democracy in the developing world.

The ascent of digital democracy around the world has some shared features. One characteristic is that access to greater information has, rather counterintuitively, contributed to a "post-fact" information environment. Nick Cohen -- speaking of British pro-"Leave" journalists-turned-politicians Boris Johnson and Michael Gove --called out their use of bold claims, their contempt for practical questions, their sneering disregard for expertise, and their transgressions of the bounds of political spin. These tactics are not all that dissimilar to Donald Trump's assertions about Barack Obama's birth certificate or immigration policies, or Subramanian Swamy's insinuations about the nationality of senior Indian policymakers.

But leaders only exploit the vulnerabilities of a post-fact world. The conditions have been laid by the digital sphere. A recent example springs to mind. There is a widespread belief on Indian social media that US presidential candidate Hillary Clinton is somehow anti-India, pro-Pakistan, and/or anti-Modi. I am no supporter of Ms. Clinton, but as someone who worked on foreign affairs in Washington and knows many of her advisors, I found these claims baffling. In fact, Clinton's political opponents (whether Barack Obama in 2008 or Donald Trump in 2016) have accused her of being too close to India, while Pakistanis often view her as critical of their country and Prime Minister Modi appears to enjoy cordial relations with her. After some inquiries, and a few tips, I managed to trace these sentiments to a single publication, a poorly sourced and misleading column that gained widespread circulation upon its release. The article's contents were deemed sufficiently credible to have now become instilled as absolute fact in the minds of many Indians active online. In a digital democracy, a lie or (better yet) a half-lie if told enough times becomes truth.

In a digital democracy, a lie or (better yet) a half-lie if told enough times becomes truth.

Another outcome of digital democracy may be a variation of what the psychologist Barry Schwartz has called the paradox of choice. Quite possibly, the greater abundance of political choice leads to less satisfaction, and the result is citizens increasingly voicing their displeasure with their available political and policy choices. The political platforms of mainstream parties rarely adhere entirely to individual voters' views. That may explain why many voters are gravitating towards parties, factions or leaders who offer the simplest messages, and project themselves as alternatives to the mainstream.

A third result of digital democracy, and one that has been better documented, is the political echo chamber. Social media, rather than creating connections with people who possess differing views and ideologies, tends to reinforce prejudices. As the psychologist Nicholas DiFonzo has noted, "Americans across the political spectrum tend to trust the news media (and 'facts' provided by the media) less than their own social group." This makes it easier for views and rumours to circulate and intensify within like-minded groups. Similar digital gerrymandering was evident in the EU Referendum in Britain and the polarization is palpable in the Indian online political space.

Finally, instant information has increased the theatricality of politics. With public statements and positions by governments, political parties and individual leaders now broadcast to constituents in real time, compromise, a necessary basis of good governance, has become more difficult. When portrayed as a betrayal of core beliefs, compromise often amounts to political suicide. Political grandstanding also contributes to legislative gridlock, with elected representatives often resorting to walkouts, sit-ins, or insults -- all manufactured for maximum viral effect -- instead of trying to reach solutions behind closed doors. Even as ease of travel allows legislators to spend more time in their constituencies, making them more sensitized to their constituents' concerns, less gets done at the national or supranational level. It is a trend that, once again, applies equally to the United States, Europe, and India.

Social media, rather than creating connections with people who possess differing views and ideologies, tends to reinforce prejudices.

The unintended consequences of digital democracy -- misinformation and discontent, polarization and gridlock -- mean that the boundary between politician and troll is blurring. The tone of democratic politics increasingly reflects that of anonymous online discourse: nasty, brutish, and short. And successful politicians are increasingly those who are able to take advantage of the resulting sentiments. Exploiting divisions, appealing to base instincts, making outlandish claims, resorting to falsehoods, and pooh-poohing details and expertise. All that could just as easily describe the playbooks of populists around the world, on the right and left: Marine Le Pen, Frauke Petry, Donald Trump or Subramanian Swamy as much as Jeremy Corbyn, Beppe Grillo, Bernie Sanders or Arvind Kejriwal.

The unintended consequences of digital democracy -- misinformation and discontent, polarization and gridlock -- mean that the boundary between politician and troll is blurring.

In all these cases, populists are willing to cross the lines that mainstream parties have flirted with, becoming forces that the centre cannot hold. US Republicans fanned the anti-immigration sentiments that first the Tea Party and then Trump are only taking to their natural conclusions, just as mainstream Democrats' economic protectionism has been seized upon by Sanders. Cameron's euroscepticism, explained away initially as constructive criticism, spiralled out of control with Brexit, just as those who pronounced the death of New Labour helped paved the way for Corbyn. Will the same one day apply in India, to the economic populism of the Congress, of which Kejriwal has become a new torchbearer, or to the chauvinism of the right, which Swamy now threatens to run away with?

Brexit is not anti-globalization so much as a product of globalization. It is also a product of democracy rather than an affront to it. But it is a democracy of a different sort, one that many of its ideological forebears anticipated. When James Madison warned of "the superior force of an interested and overbearing majority," or John Stuart Mill cautioned against "a social tyranny more formidable than many kinds of political oppression," or BR Ambedkar argued (in a slightly different context) that "political tyranny is nothing compared to social tyranny," they could just as easily have been speaking in 2016 as in 1787, 1859, or 1936. Democrats around the world may not yet be married to the mob, but plenty have been betrothed.

None of this should be interpreted as some kind of nostalgia for an older, simpler world. That world was not necessarily simpler, but it was more violent and chaotic, prejudiced and unfair, and poor and backward. It may be hard to discern amid the smoke and noise, but there are some benefits to digital democracy. Information is no longer in the hands of the few. It is easier than ever to bring injustices to light. And the same process can throw up mainstream leaders from backgrounds that are far from privileged, such as a Barack Obama, Angela Merkel, or Narendra Modi. Two of the three, Obama and Modi, rose to power on the backs of unprecedented social media movements.

But representative democracy as we have come to know it is under threat, and Brexit represents the first major casualty. Rather than fight the tide, a collective rethink is needed about how to make democracies resilient and productive in the digital age. It won't be easy.

American voters are angry. But while the ill effects of globalization top their list of grievances, nobody is well served when complex economic issues are reduced to bumper-sticker slogans – as they have been thus far in the presidential campaign.

It is unfair to dismiss concerns about globalization as unfounded. America deserves to have an honest debate about its effects. In order to yield constructive solutions, however, all sides will need to concede some inconvenient truths – and to recognize that globalization is not the same phenomenon it was 20 years ago.

Protectionists fail to see how the United States’ eroding industrial base is compatible with the principle that globalization boosts growth. But the evidence supporting that principle is too substantial to ignore.

Recent research by the McKinsey Global Institute (MGI) echoes the findings of other academics: global flows of goods, foreign direct investment, and data have increased global GDP by roughly 10% compared to what it would have been had those flows never occurred. The extra value provided by globalization amounted to $7.8 trillion in 2014 alone.

And yet, the shuttered factories dotting America’s Midwestern “Rust Belt” are real. Even as globalization generates aggregate growth, it produces winners and losers. Exposing local industries to international competition spurs efficiency and innovation, but the resulting creative destruction exacts a substantial toll on families and communities.

Economists and policymakers alike are guilty of glossing over these distributional consequences. Countries that engage in free trade will find new channels for growth in the long run, the thinking goes, and workers who lose their jobs in one industry will find employment in another.

In the real world, however, this process is messy and protracted. Workers in a shrinking industry may need entirely new skills to find jobs in other sectors, and they may have to pack up their families and pull up deep roots to pursue these opportunities. It has taken a popular backlash against free trade for policymakers and the media to acknowledge the extent of this disruption.

That backlash should not have come as a surprise. Traditional labor-market policies and training systems have not been equal to the task of dealing with the large-scale changes caused by the twin forces of globalization and automation. The US needs concrete proposals for supporting workers caught up in structural transitions – and a willingness to consider fresh approaches, such as wage insurance.

Contrary to campaign rhetoric, simple protectionism would harm consumers. A recent study by the US President’s Council of Economic Advisers found that middle-class Americans gain more than a quarter of their purchasing power from trade. In any event, imposing tariffs on foreign goods will not bring back lost manufacturing jobs.

It is time to change the parameters of the debate and recognize that globalization has become an entirely different animal: The global goods trade has flattened for a variety of reasons, including plummeting commodity prices, sluggishness in many major economies, and a trend toward producing goods closer to the point of consumption. Cross-border flows of data, by contrast, have grown by a factor of 45 during the past decade, and now generate a greater economic impact than flows of traditional manufactured goods.

Digitization is changing everything: the nature of the goods changing hands, the universe of potential suppliers and customers, the method of delivery, and the capital and scale required to operate globally. It also means that globalization is no longer exclusively the domain of Fortune 500 firms.

Companies interacting with their foreign operations, suppliers, and customers account for a large and growing share of global Internet traffic. Already half of the world’s traded services are digitized, and 12% of the global goods trade is conducted via international e-commerce. E-commerce marketplaces such as Alibaba, Amazon, and eBay are turning millions of small enterprises into exporters. This remains an enormous untapped opportunity for the US, where fewer than 1% of companies export– a far lower share than in any other advanced economy.

Despite all the anti-trade rhetoric, it is crucial that Americans bear in mind that most of the world’s customers are overseas. Fast-growing emerging economies will be the biggest sources of consumption growth in the years ahead.

This would be the worst possible moment to erect barriers. The new digital landscape is still taking shape, and countries have an opportunity to redefine their comparative advantages. The US may have lost out as the world chased low labor costs; but it operates from a position of strength in a world defined by digital globalization.

There is real value in the seamless movement of innovation, information, goods, services, and – yes – people. As the US struggles to jump-start its economy, it cannot afford to seal itself off from an important source of growth.

US policymakers must take a nuanced, clear-eyed view of globalization, one that addresses its downsides more effectively, not only when it comes to lost jobs at home, but also when it comes to its trading partners’ labor and environmental standards. Above all, the US needs to stop retrying the past – and start focusing on how it can compete in the next era of globalization.

Editor's note: this piece first appeared on Project-Syndicate.org.

American voters are angry. But while the ill effects of globalization top their list of grievances, nobody is well served when complex economic issues are reduced to bumper-sticker slogans – as they have been thus far in the presidential campaign.

It is unfair to dismiss concerns about globalization as unfounded. America deserves to have an honest debate about its effects. In order to yield constructive solutions, however, all sides will need to concede some inconvenient truths – and to recognize that globalization is not the same phenomenon it was 20 years ago.

Protectionists fail to see how the United States’ eroding industrial base is compatible with the principle that globalization boosts growth. But the evidence supporting that principle is too substantial to ignore.

Recent research by the McKinsey Global Institute (MGI) echoes the findings of other academics: global flows of goods, foreign direct investment, and data have increased global GDP by roughly 10% compared to what it would have been had those flows never occurred. The extra value provided by globalization amounted to $7.8 trillion in 2014 alone.

And yet, the shuttered factories dotting America’s Midwestern “Rust Belt” are real. Even as globalization generates aggregate growth, it produces winners and losers. Exposing local industries to international competition spurs efficiency and innovation, but the resulting creative destruction exacts a substantial toll on families and communities.

Economists and policymakers alike are guilty of glossing over these distributional consequences. Countries that engage in free trade will find new channels for growth in the long run, the thinking goes, and workers who lose their jobs in one industry will find employment in another.

In the real world, however, this process is messy and protracted. Workers in a shrinking industry may need entirely new skills to find jobs in other sectors, and they may have to pack up their families and pull up deep roots to pursue these opportunities. It has taken a popular backlash against free trade for policymakers and the media to acknowledge the extent of this disruption.

That backlash should not have come as a surprise. Traditional labor-market policies and training systems have not been equal to the task of dealing with the large-scale changes caused by the twin forces of globalization and automation. The US needs concrete proposals for supporting workers caught up in structural transitions – and a willingness to consider fresh approaches, such as wage insurance.

Contrary to campaign rhetoric, simple protectionism would harm consumers. A recent study by the US President’s Council of Economic Advisers found that middle-class Americans gain more than a quarter of their purchasing power from trade. In any event, imposing tariffs on foreign goods will not bring back lost manufacturing jobs.

It is time to change the parameters of the debate and recognize that globalization has become an entirely different animal: The global goods trade has flattened for a variety of reasons, including plummeting commodity prices, sluggishness in many major economies, and a trend toward producing goods closer to the point of consumption. Cross-border flows of data, by contrast, have grown by a factor of 45 during the past decade, and now generate a greater economic impact than flows of traditional manufactured goods.

Digitization is changing everything: the nature of the goods changing hands, the universe of potential suppliers and customers, the method of delivery, and the capital and scale required to operate globally. It also means that globalization is no longer exclusively the domain of Fortune 500 firms.

Companies interacting with their foreign operations, suppliers, and customers account for a large and growing share of global Internet traffic. Already half of the world’s traded services are digitized, and 12% of the global goods trade is conducted via international e-commerce. E-commerce marketplaces such as Alibaba, Amazon, and eBay are turning millions of small enterprises into exporters. This remains an enormous untapped opportunity for the US, where fewer than 1% of companies export– a far lower share than in any other advanced economy.

Despite all the anti-trade rhetoric, it is crucial that Americans bear in mind that most of the world’s customers are overseas. Fast-growing emerging economies will be the biggest sources of consumption growth in the years ahead.

This would be the worst possible moment to erect barriers. The new digital landscape is still taking shape, and countries have an opportunity to redefine their comparative advantages. The US may have lost out as the world chased low labor costs; but it operates from a position of strength in a world defined by digital globalization.

There is real value in the seamless movement of innovation, information, goods, services, and – yes – people. As the US struggles to jump-start its economy, it cannot afford to seal itself off from an important source of growth.

US policymakers must take a nuanced, clear-eyed view of globalization, one that addresses its downsides more effectively, not only when it comes to lost jobs at home, but also when it comes to its trading partners’ labor and environmental standards. Above all, the US needs to stop retrying the past – and start focusing on how it can compete in the next era of globalization.

Editor's note: this piece first appeared on Project-Syndicate.org.

In an interview on NPR's Fresh Air, Jeffrey Rosen discusses how technological changes are challenging basic Constitutional principles of freedom of speech and our own individual autonomy.

TERRY GROSS, HOST:This is FRESH AIR. I'm Terry Gross. The digital world that we've come to rely on - the Internet, social networks, GPS's, street maps—also creates opportunities to collect information about us, track our movements and invade our privacy. Add to that brain scans that might reveal criminal tendencies and new developments in genetic medicine and biotechnology, and you have a lot of potential challenges to basic Constitutional principles that our founding father couldn't possibly have imagined.

My guest, Jeffrey Rosen has put together a new book that explores those challenges. Along with Benjamin Wittes, he co-edited Constitution 3.0: Freedom and Technological Change. It's a publication of the Brookings Institution's Project on Technology and the Constitution, which Rosen directs. He's also a law professor at George Washington University and legal editor for The New Republic.

His new book is a collection of essays in which a diverse group of legal scholars imagine plausible technological developments in or near the year 2025 that would stress current Constitutional law, and they propose possible solutions.

Jeffrey Rosen, welcome back to FRESH AIR. So what are the particular parts of the Constitution that you think really come into play here with new technologies?

JEFFREY ROSEN: Well, what's so striking is that none of the existing amendments give clear answers to the most basic questions we're having today. So, for example, think about global positioning system technologies, which the Supreme Court is now considering. Can the police, without a warrant, put a secret GPS device on the bottom of someone's car and track him 24/7 for a month?

Well, the relevant constitutional text is the Fourth Amendment which says the right of the people to be secure in their persons, houses, papers and effects against unreasonable searches and seizures, shall not be violated. But that doesn't answer the question: Is it an unreasonable search of our persons or effects to be monitored in public spaces?

Some courts have said no. Several lower court judges and the Obama administration argue that we have no expectation of privacy in public, because it's theoretically possible for our neighbors to put a tail on us or for the police to track us for 100 miles, as the court has said. Therefore, we have to assume the risk that we're being monitored, ubiquitously, 24/7 for a month.

But not everyone agrees. In a visionary opinion, Judge Douglas Ginsburg on the U.S. Court of Appeals for the D.C. Circuit said there's a tremendous difference between short-term and long-term surveillance. We may expect that our neighbors are watching when we walk on the street for a few blocks, but no one in practice expects to be tailed or surveilled for a month.

Ginsburg said we do have an expectation of privacy in the whole of our movements, and therefore when the police are going to engage in long-term surveillance, because they can learn so much more about us, they should have a warrant.

There was a remarkable moment in the oral argument for the global positioning system case. Chief Justice John Roberts, who asked the first question, he said: Isn't there a difference between 100-mile search of the kind we've approved in the past and watching someone for a month?

The government's lawyer resisted, and Roberts said: Is it the U.S. government's position that the police could put GPS devices inside the clothes of the members of this court, of these justices, or under our cars and track us for a month? And when the government's lawyer said yes, I think he may have lost the case.

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