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Fractals and Infinity A fractal may be magnified over and over, to infinity, always revealing more detail. PhotoviewPlus / Getty Images A fractal is an abstract mathematical object, used in art and to simulate natural phenomena. Written as a mathematical equation, most fractals are nowhere differentiable. When viewing an image of a fractal, this means you could zoom in and see new detail. In other words, a fractal is infinitely magnifiable.The Koch snowflake is an interesting example of a fractal. The snowflake starts as an equilateral triangle. For each iteration of the fractal:Each line segment is divided into three equal segments.

Cosmology and Infinity Even if the universe is finite, it might be one of an infinite number of "bubbles.". Detlev van Ravenswaay / Getty Images Cosmologists study the universe and ponder infinity. Does space go on and on without end? This remains an open question. Even if the physical universe as we know it has a boundary, there is still the multiverse theory to consider. Our universe may be but one in an infinite number of them.

start with epistemic bubbles

That omission might be purposeful

But that omission can also be entirely inadvertent. Even if we’re not actively trying to avoid disagreement, our Facebook friends tend to share our views and interests

An ‘echo chamber’ is a social structure from which other relevant voices have been actively discredited. Where an epistemic bubble merely omits contrary views, an echo chamber brings its members to actively distrust outsiders.

an echo chamber is something like a cult. A cult isolates its members by actively alienating them from any outside sources. Those outside are actively labelled as malignant and untrustworthy.

In epistemic bubbles, other voices are not heard; in echo chambers, other voices are actively undermined.

The way to break an echo chamber is not to wave “the facts” in the faces of its members. It is to attack the echo chamber at its root and repair that broken trust.

Looking to others for corroboration is a basic method for checking whether one has reasoned well or badly

They have been in the limelight lately, most famously in Eli Pariser’s The Filter Bubble (2011) and Cass Sunstein’s #Republic: Divided Democracy in the Age of Social Media (2017).

The general gist: we get much of our news from Facebook feeds and similar sorts of social media. Our Facebook feed consists mostly of our friends and colleagues, the majority of whom share our own political and cultural views

various algorithms behind the scenes, such as those inside Google search, invisibly personalise our searches, making it more likely that we’ll see only what we want to see. These processes all impose filters on information.

Such filters aren’t necessarily bad. The world is overstuffed with information, and one can’t sort through it all by oneself: filters need to be outsourced.

That’s why we all depend on extended social networks to deliver us knowledge

any such informational network needs the right sort of broadness and variety to work

Each individual person in my network might be superbly reliable about her particular informational patch but, as an aggregate structure, my network lacks what Sanford Goldberg in his book Relying on Others (2010) calls ‘coverage-reliability’. It doesn’t deliver to me a sufficiently broad and representative coverage of all the relevant information.

Epistemic bubbles also threaten us with a second danger: excessive self-confidence.

An ‘epistemic bubble’ is an informational network from which relevant voices have been excluded by omission

Suppose that I believe that the Paleo diet is the greatest diet of all time. I assemble a Facebook group called ‘Great Health Facts!’ and fill it only with people who already believe that Paleo is the best diet. The fact that everybody in that group agrees with me about Paleo shouldn’t increase my confidence level one bit. They’re not mere copies – they actually might have reached their conclusions independently – but their agreement can be entirely explained by my method of selection.

Luckily, though, epistemic bubbles are easily shattered. We can pop an epistemic bubble simply by exposing its members to the information and arguments that they’ve missed.

echo chambers are a far more pernicious and robust phenomenon.

amieson and Cappella’s book is the first empirical study into how echo chambers function

echo chambers work by systematically alienating their members from all outside epistemic sources.

Their research centres on Rush Limbaugh, a wildly successful conservative firebrand in the United States, along with Fox News and related media

His constant attacks on the ‘mainstream media’ are attempts to discredit all other sources of knowledge. He systematically undermines the integrity of anybody who expresses any kind of contrary view.

outsiders are not simply mistaken – they are malicious, manipulative and actively working to destroy Limbaugh and his followers. The resulting worldview is one of deeply opposed force, an all-or-nothing war between good and evil

The result is a rather striking parallel to the techniques of emotional isolation typically practised in cult indoctrination

cult indoctrination involves new cult members being brought to distrust all non-cult members. This provides a social buffer against any attempts to extract the indoctrinated person from the cult.

The echo chamber doesn’t need any bad connectivity to function. Limbaugh’s followers have full access to outside sources of information

As Elijah Millgram argues in The Great Endarkenment (2015), modern knowledge depends on trusting long chains of experts. And no single person is in the position to check up on the reliability of every member of that chain

Their worldview can survive exposure to those outside voices because their belief system has prepared them for such intellectual onslaught.

exposure to contrary views could actually reinforce their views. Limbaugh might offer his followers a conspiracy theory: anybody who criticises him is doing it at the behest of a secret cabal of evil elites, which has already seized control of the mainstream media.

Perversely, exposure to outsiders with contrary views can thus increase echo-chamber members’ confidence in their insider sources, and hence their attachment to their worldview.

‘evidential pre-emption’. What’s happening is a kind of intellectual judo, in which the power and enthusiasm of contrary voices are turned against those contrary voices through a carefully rigged internal structure of belief.

One might be tempted to think that the solution is just more intellectual autonomy. Echo chambers arise because we trust others too much, so the solution is to start thinking for ourselves.

that kind of radical intellectual autonomy is a pipe dream. If the philosophical study of knowledge has taught us anything in the past half-century, it is that we are irredeemably dependent on each other in almost every domain of knowledge

Limbaugh’s followers regularly read – but do not accept – mainstream and liberal news sources. They are isolated, not by selective exposure, but by changes in who they accept as authorities, experts and trusted sources.

we depend on a vastly complicated social structure of trust. We must trust each other, but, as the philosopher Annette Baier says, that trust makes us vulnerable. Echo chambers operate as a kind of social parasite on that vulnerability, taking advantage of our epistemic condition and social dependency.

I am quite confident that there are plenty of echo chambers on the political Left. More importantly, nothing about echo chambers restricts them to the arena of politics

The world of anti-vaccination is clearly an echo chamber, and it is one that crosses political lines. I’ve also encountered echo chambers on topics as broad as diet (Paleo!), exercise technique (CrossFit!), breastfeeding, some academic intellectual traditions, and many, many more

Here’s a basic check: does a community’s belief system actively undermine the trustworthiness of any outsiders who don’t subscribe to its central dogmas? Then it’s probably an echo chamber.

much of the recent analysis has lumped epistemic bubbles together with echo chambers into a single, unified phenomenon. But it is absolutely crucial to distinguish between the two.

Epistemic bubbles are rather ramshackle; they go up easily, and they collapse easily

Echo chambers are far more pernicious and far more robust. They can start to seem almost like living things. Their belief systems provide structural integrity, resilience and active responses to outside attacks

the two phenomena can also exist independently. And of the events we’re most worried about, it’s the echo-chamber effects that are really causing most of the trouble.

new data does, in fact, seem to show that people on Facebook actually do see posts from the other side, or that people often visit websites with opposite political affiliation.

their basis for evaluation – their background beliefs about whom to trust – are radically different. They are not irrational, but systematically misinformed about where to place their trust.

Many people have claimed that we have entered an era of ‘post-truth’.

Not only do some political figures seem to speak with a blatant disregard for the facts, but their supporters seem utterly unswayed by evidence. It seems, to some, that truth no longer matters.

This is an explanation in terms of total irrationality. To accept it, you must believe that a great number of people have lost all interest in evidence or investigation, and have fallen away from the ways of reason.

echo chambers offers a less damning and far more modest explanation. The apparent ‘post-truth’ attitude can be explained as the result of the manipulations of trust wrought by echo chambers.

We don’t have to attribute a complete disinterest in facts, evidence or reason to explain the post-truth attitude. We simply have to attribute to certain communities a vastly divergent set of trusted authorities.

An echo chamber doesn’t destroy their members’ interest in the truth; it merely manipulates whom they trust and changes whom they accept as trustworthy sources and institutions.

in many ways, echo-chamber members are following reasonable and rational procedures of enquiry. They’re engaging in critical reasoning. They’re questioning, they’re evaluating sources for themselves, they’re assessing different pathways to information. They are critically examining those who claim expertise and trustworthiness, using what they already know about the world

none of this weighs against the existence of echo chambers. We should not dismiss the threat of echo chambers based only on evidence about connectivity and exposure.

Notice how different what’s going on here is from, say, Orwellian doublespeak, a deliberately ambiguous, euphemism-filled language designed to hide the intent of the speaker.

echo chambers don’t trade in vague, ambiguous pseudo-speech. We should expect that echo chambers would deliver crisp, clear, unambiguous claims about who is trustworthy and who is not

clearly articulated conspiracy theories, and crisply worded accusations of an outside world rife with untrustworthiness and corruption.

Once an echo chamber starts to grip a person, its mechanisms will reinforce themselves.

In an epistemically healthy life, the variety of our informational sources will put an upper limit to how much we’re willing to trust any single person. Everybody’s fallible; a healthy informational network tends to discover people’s mistakes and point them out. This puts an upper ceiling on how much you can trust even your most beloved leader

nside an echo chamber, that upper ceiling disappears.

Being caught in an echo chamber is not always the result of laziness or bad faith. Imagine, for instance, that somebody has been raised and educated entirely inside an echo chamber

when the child finally comes into contact with the larger world – say, as a teenager – the echo chamber’s worldview is firmly in place. That teenager will distrust all sources outside her echo chamber, and she will have gotten there by following normal procedures for trust and learning.

It certainly seems like our teenager is behaving reasonably. She could be going about her intellectual life in perfectly good faith. She might be intellectually voracious, seeking out new sources, investigating them, and evaluating them using what she already knows.

The worry is that she’s intellectually trapped. Her earnest attempts at intellectual investigation are led astray by her upbringing and the social structure in which she is embedded.

Echo chambers might function like addiction, under certain accounts. It might be irrational to become addicted, but all it takes is a momentary lapse – once you’re addicted, your internal landscape is sufficiently rearranged such that it’s rational to continue with your addiction

Similarly, all it takes to enter an echo chamber is a momentary lapse of intellectual vigilance. Once you’re in, the echo chamber’s belief systems function as a trap, making future acts of intellectual vigilance only reinforce the echo chamber’s worldview.

There is at least one possible escape route, however. Notice that the logic of the echo chamber depends on the order in which we encounter the evidence. An echo chamber can bring our teenager to discredit outside beliefs precisely because she encountered the echo chamber’s claims first. Imagine a counterpart to our teenager who was raised outside of the echo chamber and exposed to a wide range of beliefs. Our free-range counterpart would, when she encounters that same echo chamber, likely see its many flaws

Those caught in an echo chamber are giving far too much weight to the evidence they encounter first, just because it’s first. Rationally, they should reconsider their beliefs without that arbitrary preference. But how does one enforce such informational a-historicity?

The escape route is a modified version of René Descartes’s infamous method.

Meditations on First Philosophy (1641). He had come to realise that many of the beliefs he had acquired in his early life were false. But early beliefs lead to all sorts of other beliefs, and any early falsehoods he’d accepted had surely infected the rest of his belief system.

The only solution, thought Descartes, was to throw all his beliefs away and start over again from scratch.

He could start over, trusting nothing and no one except those things that he could be entirely certain of, and stamping out those sneaky falsehoods once and for all. Let’s call this the Cartesian epistemic reboot.

Notice how close Descartes’s problem is to our hapless teenager’s, and how useful the solution might be. Our teenager, like Descartes, has problematic beliefs acquired in early childhood. These beliefs have infected outwards, infesting that teenager’s whole belief system. Our teenager, too, needs to throw everything away, and start over again.

Let’s call the modernised version of Descartes’s methodology the social-epistemic reboot.

when she starts from scratch, we won’t demand that she trust only what she’s absolutely certain of, nor will we demand that she go it alone

For the social reboot, she can proceed, after throwing everything away, in an utterly mundane way – trusting her senses, trusting others. But she must begin afresh socially – she must reconsider all possible sources of information with a presumptively equanimous eye. She must take the posture of a cognitive newborn, open and equally trusting to all outside sources

we’re not asking people to change their basic methods for learning about the world. They are permitted to trust, and trust freely. But after the social reboot, that trust will not be narrowly confined and deeply conditioned by the particular people they happened to be raised by.

Such a profound deep-cleanse of one’s whole belief system seems to be what’s actually required to escape. Look at the many stories of people leaving cults and echo chambers

Take, for example, the story of Derek Black in Florida – raised by a neo-Nazi father, and groomed from childhood to be a neo-Nazi leader. Black left the movement by, basically, performing a social reboot. He completely abandoned everything he’d believed in, and spent years building a new belief system from scratch. He immersed himself broadly and open-mindedly in everything he’d missed – pop culture, Arabic literature, the mainstream media, rap – all with an overall attitude of generosity and trust.

It was the project of years and a major act of self-reconstruction, but those extraordinary lengths might just be what’s actually required to undo the effects of an echo-chambered upbringing.

we need to attack the root, the systems of discredit themselves, and restore trust in some outside voices.

Stories of actual escapes from echo chambers often turn on particular encounters – moments when the echo-chambered individual starts to trust somebody on the outside.

Black’s is case in point. By high school, he was already something of a star on neo-Nazi media, with his own radio talk-show. He went on to college, openly neo-Nazi, and was shunned by almost every other student in his community college. But then Matthew Stevenson, a Jewish fellow undergraduate, started inviting Black to Stevenson’s Shabbat dinners. In Black’s telling, Stevenson was unfailingly kind, open and generous, and slowly earned Black’s trust. This was the seed, says Black, that led to a massive intellectual upheaval – a slow-dawning realisation of the depths to which he had been misled

Similarly, accounts of people leaving echo-chambered homophobia rarely involve them encountering some institutionally reported fact. Rather, they tend to revolve around personal encounters – a child, a family member, a close friend coming out.

hese encounters matter because a personal connection comes with a substantial store of trust.

We don’t simply trust people as educated experts in a field – we rely on their goodwill. And this is why trust, rather than mere reliability, is the key concept

goodwill is a general feature of a person’s character. If I demonstrate goodwill in action, then you have some reason to think that I also have goodwill in matters of thought and knowledge.

f one can demonstrate goodwill to an echo-chambered member – as Stevenson did with Black – then perhaps one can start to pierce that echo chamber.

the path I’m describing is a winding, narrow and fragile one. There is no guarantee that such trust can be established, and no clear path to its being established systematically.

what we’ve found here isn’t an escape route at all. It depends on the intervention of another. This path is not even one an echo-chamber member can trigger on her own; it is only a whisper-thin hope for rescue from the outside.

The participants rated the pictures on cuteness and funniness, as well as on how much they felt the pictures made them lose control — for example, if they agreed with statements such as "I can't handle it!" The participants also rated the extent to which the pictures made them "want to say something like 'grr!'" and "want to squeeze something." Sure enough, the cuter the animal, the less control and more desire to "grrr" and squeeze something that people felt. Cute animals produced this feeling significantly more strongly than did funny animals. The funny critters in turn produced the feeling more strongly than did neutral animals, perhaps because the funny animals were perceived as cute, too, Dyer said.

That's exactly what happened. The people watching a cute slideshow popped 120 bubbles, on average, compared with 80 for the funny slideshow and just a hair over 100 for the neutral one.

It's possible that seeing a wide-eyed baby or roly-poly pup triggers our drive to care for that creature, Dyer said. But since the animal is just a picture, and since even in real life we might not be able to care for the creature as much as we want, this urge may be frustrated, she said. That frustration could lead to aggression.

Or the reason might not be specific to cuteness, Dyer said. Many overwhelmingly positive emotions look negative, as when Miss America sobs while receiving her crown. Such high levels of positive emotion may overwhelm people.

a bunch of particles can share these states at the same time, effectively becoming instances of the same particle. And so: entanglement.

possible to strip away all of this indeterminateness

wave functions are very fragile, subject to a “collapse” in which all of those possibilities become just a single particle at a single point at a single time.

physicists have observed a very peculiar behavior of electrons in supercooled baths of helium. When an electron enters the bath, it acts to

two probabilities can be isolated from each other, cordoned off like quantum crime scenes

it’s possible to take a wave function and isolate it into different parts. So, if our electron has some probability of being in position (x1,y1,z1) and another probability of being in position (x2,y2,z2), those two probabilities can be isolated from each other, cordoned off like quantum crime scenes

using tiny bubbles of helium as physical “traps.

trapping the chance of finding the electron, not pieces of the electron

when a macroscopic human attempts to measure a quantum mechanical system: The wave drops away and all that’s left is a boring, well-defined thing.

repel the surrounding helium atoms, forming its own little bubble or cavity in the process.

That an electron (or other particle) can be in many places at the same time is strange enough, but the notion that those possibilities can be captured and shuttled away adds a whole new twist.

wave function isn’t a physical thing. It’s mathematics that describe a phenomenon.

The electron, upon measurement, will be in precisely one bubble.

“No one is sure what actually constitutes a measurement,”

Is consciousness required? We don’t really know.”

This is simply how the man talks. About everything. What's more, he says everything, takes the both sides of everything:

Does he believe any of this, either way? Almost certainly not. The man has the brain of a goldfish: He "believes" whatever is in front of him in the moment. No matter whether or not it contradicts something he believed five minutes ago or will believe ten minutes from now.

All this guy does is try to create panic. That's his move

Put those two together—constant exaggerating self-aggrandizement and the perpetual attempt to stoke panic—and what you have is a guy was just saying stuff to Woodward.

In a way, it would be comforting to believe that our president was intelligent enough to grasp the seriousness of the coronavirus, even if his judgment in how to deal with the outbreak was malicious or poor.

All of the available evidence suggests the opposite:

Donald Trump lacks the cognitive ability to understand any concepts more complicated than self-promotion or self-preservation.

(2) The most alarming part of the Woodward tapes is the way Trump talks about Kim Jong Un and the moment when Trump literally takes sides with Kim Jong Un against a former American president.

After the Woodward tapes, anyone still deluding themselves about the authoritarian danger Trump poses to America is, finally, all out of excuses.

This, right here, is the most damning revelation from the Woodward tapes (so far):   Trump reflected on his relationships with authoritarian leaders generally, including Turkish President Recep Tayyip Erdogan. “It’s funny, the relationships I have, the tougher and meaner they are, the better I get along with them,” he told Woodward. “You know? Explain that to me someday, okay?” It's not hard to explain. And it's not funny.

You have this incredible rise in interest in technology and excitement about technology and the beat itself really took off while I was there. But then at the same time, you have this massive new centralization of government control over technology and the use of technology to control people and along with that rising nationalism.

Paul Mozur, who covers China and tech for the New York Times and is currently living in Taiwain, after the Chinese expelled all foreign journalists. 

That was more apparent, I think, over the past five years or so after Xi Jinping really consolidated power, but the amount of cameras that went up on street corners, the degree to which you used to be able to — there’s a moment maybe seven or eight years ago — where Jack Ma talked about the Tiananmen Square crackdowns on Chinese social media and now that’s just so utterly unthinkable. The degree to which the censorship has increased now to the level where if you say certain things on WeChat, it’s very possible the police will show up at your door where you actually have a truly fully formed Internet Police. . .

I think a lot of Chinese people feel more secure from the cameras, there’s been a lot of propaganda out there saying the cameras are here for your safety. There is this extremely positive, almost Utopian take on technology in China, and a lot of the stuff that I think, our knee-jerk response from the United States would be to be worried about, they kind of embrace as a vision of the future. .

The main reasons WeChat is a concern if you were the United States government is number one, it’s become a major vector of the spread of Chinese propaganda and censorship, and because it’s a social network that is anchored by a vast majority of users in China who are censored and who are receptive to all this propaganda, even if you’re overseas using WeChat and not censored in the same way, what you get is mostly content shared from people who are living in a censored environment, so it basically stays a censored environment. I call that a super filter bubble; the idea is that there are multiple filter bubbles contending in a website like Facebook, but with WeChat, because it’s so dominated by government controls, you get one really big mega pro-China filter bubble that then is spread all over the the world over the app, even if people outside of China don’t face the same censorship. So that’s one thing.

The second is the surveillance is immense and anybody who creates an account in China brings the surveillance with them overseas

And most people, frankly, using WeChat overseas probably created the accounts in China, and even when they don’t create the account in China, when national security priorities hit a certain level, I think they’re probably going to use it to monitor people anyway. I’ve run into a number of people who have had run-ins with the Chinese Internet Police either in China, but some of them outside of China, in their day-to-day life using WeChat, and then they return home and it becomes apparent that the Internet Police were watching them the whole time, and they get a visit and the police have a discussion with them about what their activities have been

So it’s also a major way that the Chinese government is able to spy on and monitor people overseas and then unsurprisingly, because of that, it’s used as a way for the Chinese intel services to harass people overseas. . . .

WeChat is particularly suited to this in part because every single person who uses WeChat within China has it linked to their real identity. And then because everybody on WeChat has linked to their real identity, you can map their relationship networks and lean on them that way.

It also has a bunch of tools that the Chinese police use, for instance key words, where you can set an alarm so that if you were to say “Tiananmen”, they could set an alarm so that anytime you say that they get a warning about that, and then they go look at what you’ve written. So there’s all these tools that are uniquely created for Chinese state surveillance that are within the app that they can also use, so there’s a bunch of ways that the app is just better.

It’s also one of the very few unblocked communication tools that goes between the two countries. So for all these reasons it’s a very, very big deal. For the Chinese government, it’s an important tool of social control, and it’s been a way that they’ve been able to take the social controls that exist within China and expand them to the diaspora community in some pretty unnerving ways.

Teachers can download the lessons and adapt them for their own purposes, free of charge. Students learn how to examine documents critically, just as historians would, in order to answer intriguing questions: Did Pocahontas really rescue John Smith? Was Abraham Lincoln a racist? Who blinked first in the Cuban Missile Crisis, the Russians or the Americans?

The website's lessons have been downloaded 800,000 times and spawned a lively online community of history educators grateful for the camaraderie

just 30 percent of the people who teach history-related courses in U.S. public high schools both majored in the field and are certified to teach it.

" By reading these challenging documents and discovering history for themselves, he says, "not only will they remember the content, they'll develop skills for life."

"Textbooks are useful as background narrative. It's difficult to talk about the Gulf of Tonkin Resolution if students don't know where Vietnam is, or the Lincoln-Douglas debates if they don't know who Abe Lincoln was before he was Daniel Day-Lewis.

But when a ten-pound textbook becomes the script for a whole year's worth of instruction, a precious learning opportunity is lost. "Many students go through their entire middle and high school and never encounter the actual voice of a historical participant,"

Wineburg devoured history books as a kid and did well in Advanced Placement courses at his public high school. But when he entered Brown University, he was shocked at how ill-prepared he was in the subject. Employed after college as a high school history teacher, he saw similar weaknesses in his students. "The best ones could repeat what the text said," he recalls, "but when I asked them to critically examine whether they believed the text, I could have been speaking Martian."

Wineburg realized that the art of historical thinking is not something that comes naturally to most people; it has to be cultivated. Students have to be taught to look at the source of a document before reading it, figure out the context in which it was written, and cross-check it with other sources before coming to a conclusion.

In 2008, Reisman was ready to conduct a test of the curriculum at five schools in the San Francisco Unified School District. As expected, students in the test classes showed an increased ability to retain historical knowledge, as well as a greater appreciation for history, compared to the control group. What took everyone by surprise, though, was how much the test students advanced in basic reading.

Fremont 11th grader Ayanna Black agrees. "In other history courses I have taken, I wasn't able to fully understand what was going on. It seemed that it was just a bunch of words I had to memorize for a future test," she says. "Now that I contextualize the information I am given, it helps me understand not only what is being said but also the reason behind it." The approach, she says, "leads me to remembering the information out of curiosity, rather than trying to pass a test."

Scholars in the Stanford History Education Group hope to develop more online lesson plans in world history

The Common Core curriculum will bring radical changes in the standardized state tests that youngsters have been taking for decades. Instead of filling in multiple-choice bubbles, they will be expected to write out short answers that demonstrate their ability to analyze texts, and then cite those texts to support arguments—the exact skills that Reading Like a Historian fosters.

Wineburg and his PhD students have teamed up with the library on another project: a website called Beyond the Bubble,where teachers can learn how to evaluate their students using short written tests called History Assessments of Thinking. Each HAT asks students to consider a historical document—a letter drawn from the archives of the NAACP, for example—and justify their conclusions about it in three or four sentences. By scanning the responses, teachers can determine quickly whether their pupils are grasping basic concepts.

Wineburg hopes to make Reading Like a Historian lesson plans completely paperless, with exercise sheets that can be filled out on a laptop or tablet computer.

Though the work has been hard in history this year, she appreciates what it's taught her. "I've learned that you don't just read what is put in front of you and accept it, which is what I had been doing with my textbook all summer," she explains. "It can be frustrating to analyze documents that are contradictory, but I'm coming to appreciate that history is a collection of thousands of accounts and perspectives, and it's our job to interpret it."

search could be – and was – personalised, because Google’s algorithms could figure out what each user was most likely to be interested in, and therefore what kinds of information would be most relevant for her or him. So, imperceptibly, but inexorably over time, we have come to live in what Eli Pariser christened a “filter bubble”.

Before the internet, our problem with information was its scarcity. Now our problem is unmanageable abundance. So now the scarce resources are attention and time, over which a vicious war has broken out between traditional media and the internet-based upstarts.

YouTube has a billion users, half of whom access it via mobile devices. The average time spent on the site is 40 minutes. Facebook now claims to have 1.65 billion monthly active users, who spend on average 50 minutes a day on its services. So if Google is an 800lb gorilla, Facebook is a megaton King Kong.

Competition for attention and time is a zero-sum game that traditional media are losing. In desperation, they are trying both to appease Facebook and to harness its hold on people’s attention

In doing so, they have entered into a truly Faustian bargain. Because while publishers can without difficulty ship their stuff to Instant Articles, they cannot control which ones Facebook users actually get to see. This is because users’ news feeds are determined by Facebook’s machine-learning algorithms that try to guess what each user would like to see (and what might dispose them to click on an advertisement).

when you ask – as Professor George Brock memorably did – whether Mark Zuckerberg and his satraps understand that they have acquired editorial responsibilities, they look blank. Facebook is not a publisher, they explain, merely a “platform”. And, besides, no humans are involved in curating users’ news feeds: it’s all done by algorithms and is therefore neutral. In other words: nothing to see here; move on.

Any algorithm that has to make choices has criteria that are specified by its designers. And those criteria are expressions of human values. Engineers may think they are “neutral”, but long experience has shown us they are babes in the woods of politics, economics and ideology.

Her extended family in South Africa were African National Congress supporters — the party of Nelson Mandela. They were longtime activists for racial equality. When Justine arrived at the family home from the airport, one of the first things her aunt said to her was: “This is not what our family stands for. And now, by association, you’ve almost tarnished the family.”

I wanted to learn about the last era of American history when public shaming was a common form of punishment, so I was seeking out court transcripts from the 18th and early 19th centuries. I had assumed that the demise of public punishments was caused by the migration from villages to cities. Shame became ineffectual, I thought, because a person in the stocks could just lose himself or herself in the anonymous crowd as soon as the chastisement was over. Modernity had diminished shame’s power to shame — or so I assumed.

The pillory and whippings were abolished at the federal level in 1839, although Delaware kept the pillory until 1905 and whippings until 1972. An 1867 editorial in The Times excoriated the state for its obstinacy. “If [the convicted person] had previously existing in his bosom a spark of self-respect this exposure to public shame utterly extinguishes it. . . . The boy of 18 who is whipped at New Castle for larceny is in nine cases out of 10 ruined. With his self-respect destroyed and the taunt and sneer of public disgrace branded upon his forehead, he feels himself lost and abandoned by his fellows.”

I told her what Biddle had said — about how she was probably fine now. I was sure he wasn’t being deliberately glib, but like everyone who participates in mass online destruction, uninterested in learning that it comes with a cost.

“Well, I’m not fine yet,” Sacco said to me. “I had a great career, and I loved my job, and it was taken away from me, and there was a lot of glory in that. Everybody else was very happy about that.”

her shaming wasn’t really about her at all. Social media is so perfectly designed to manipulate our desire for approval, and that is what led to her undoing. Her tormentors were instantly congratulated as they took Sacco down, bit by bit, and so they continued to do so. Their motivation was much the same as Sacco’s own — a bid for the attention of strangers — as she milled about Heathrow, hoping to amuse people she couldn’t see.

Social media is, on the whole, a very bad thing. It wastes time, gives at best ephemeral pleasure with a modicum of interest, causes privacy and necessary social boundaries to disintegrate, and enriches people very much at the expense of others. Anyone can make a statement they later regret. It is now impossible to genuinely retract or escape such a statement. This is outrageous. Social media brings out the very worst in people. Rather than free speech, ot also promotes - essentially requires - a ridiculous level of self-censorship or imposition of extreme global shaming. This is not a societal good.

Reading this article, it made me very happy to not have a Twitter account. Anyone can say something some group doesn't like and interpret its meaning in negative ways, gang up on someone and bring them down

Look at Sacco's tweets on her flight and at the airport...absolutely meaningless junk that has no value to anyone. Why did she feel the need to post such thoughts? Post enough mindless thoughts and you'll probably post something really, really stupid you'd wished you hadn't.

I do feel sorry for the guy that made a stupid joke at a conference. When he said it, it was directed to one person and someone else decided to post to the world. That kind of stuff keeps up and nobody will ever do anything remotely interesting in public for fear it is misrepresented and their life ends. Getting fired for making a (to me, anyway) harmless joke seems severe

The offendee, it seems to me, would have done herself and others a favor by addressing the issue directly with him. Why the need to bypass any direct communication when you can post it and shame the person for the world? That's the act of a coward and someone who's out to punish.

President George W. Bush’s tax cuts had similar effects between 2001 and 2007: real growth in the absence of new investment.

over the course of the last century, net business investment atrophied while G.D.P. per capita increased spectacularly. And the source of that growth? Increased consumer spending, coupled with and amplified by government outlays.

Between 1900 and 2000, real gross domestic product per capita (the output of goods and services per person) grew more than 600 percent. Meanwhile, net business investment declined 70 percent as a share of G.D.P. What’s more, in 1900 almost all investment came from the private sector — from companies, not from government — whereas in 2000, most investment was either from government spending (out of tax revenues) or “residential investment,” which means consumer spending on housing, rather than business expenditure on plants, equipment and labor.

According to the Organization for Economic Cooperation and Development, retained corporate earnings that remain uninvested are now close to 8 percent of G.D.P., a staggering sum in view of the unemployment crisis we face.

So corporate profits do not drive economic growth — they’re just restless sums of surplus capital, ready to flood speculative markets at home and abroad. In the 1920s, they inflated the stock market bubble, and then caused the Great Crash. Since the Reagan revolution, these superfluous profits have fed corporate mergers and takeovers, driven the dot-com craze, financed the “shadow banking” system of hedge funds and securitized investment vehicles, fueled monetary meltdowns in every hemisphere and inflated the housing bubble.

we doubt the moral worth of consumer culture. Like the abstemious ant who scolds the feckless grasshopper as winter approaches, we think that saving is the right thing to do. Even as we shop with abandon, we feel that if only we could contain our unruly desires, we’d be committing ourselves to a better future. But we’re wrong.

Consumer spending is not only the key to economic recovery in the short term; it’s also necessary for balanced growth in the long term. If our goal is to repair our damaged economy, we should bank on consumer culture — and that entails a redistribution of income away from profits toward wages, enabled by tax policy and enforced by government spending.

Quite apart from the “unbalanced power” of the financial sector, and the tendency of a super-sized financial sector to cause increasingly bad global financial crashes, excessive financialization leads to resources being misallocated. “In many of the financial sector’s segments that have grown fastest since deregulation—like investment banks—the transactions are primarily zero-sum.”

However in times of rapid technological transformation like today, the role of the economic priesthood in protecting its own interests can become a massively destabilizing.

Thus we know from the history of the last couple of hundred years that in times of rapid technological transformation, the financial sector tends to become disconnected from the real economy

This has occurred a number of times in the last few hundred years, including the Canal Mania (England—1790s), the Rail Mania (England—1840s), the Gilded Age (US: 1880s—early 1900s) the Roaring Twenties (US—1920s) and the Big Banks of today.

Getting to safety is not made any easier by the fact the modern economic priesthood—the managers of large firms and the banks—has, like their ancient Egyptian forbears, found ways to participate in the casino economy and benefit from “making money out of money”, even as the economy as a whole suffers.  As Upton Sinclair wrote, “It is difficult to get a man to understand something, when his salary depends upon his not understanding it.

Just as the ancient Egyptian economic priesthood clung to power as the economy stagnated, so today the economic priesthood shows no signs of relinquishing their gains or their power. The appetite and expectation of extraordinary returns is still there.

“Corporate chieftains rationally choose financial engineering—debt-financed share buybacks, for example—over capital investment in property, plants and equipment. Financial markets reward shareholder activism. Institutional investors extend their risk parameters to beat their benchmarks… But real economic growth—averaging just a bit above 2 percent for the fifth year in a row—remains sorely lacking.”

As a result, the economy remains in the “Great Stagnation”(Tyler Cowen), also known as “the Secular Stagnation (Larry Summers). It is running on continuing life support from the Federal Reserve. Large enterprises still appear to be profitable. The appearance, though not the reality, of economic well-being has been sufficient to make the stock market soa

Just as no change was possible in ancient Egyptian society so long as the economic priesthood colluded to preserve the status quo, so the excesses and prevarications of the Financial Sector will continue so long as the regulators remain its cheerleaders.

Just listen to the chair of the Securities and Exchange Commission (SEC), Mary Jo White at Stanford University Rock Center for Corporate Governance speaking to directors. In her speech, she makes no secret of her view that the overall corporate arrangements are sound. The job of the SEC, as outlined in the speech, is to find the odd individual who might be doing something wrong. The idea that the large-scale activities of the major banks might be socially corrosive is not even alluded.

Thus in times of transformational technology, there is a huge expansion of investment, driven by the financial sector. Wealthy investors begin to expect outsized returns and so there is over-investment. The resulting bubbles in due course burst

Just as in ancient Egypt, no progress was possible so long as the myths and rituals of the economic priesthood and their offerings to the gods were widely accepted as real indicators of what was going on, so today no progress is possible so long as the myths and rituals of the modern economic priesthood still has a pervasive hold of people’s minds

In the modern economy, the myths and rituals of the economic priesthood are built on the notion that the purpose of a firm is to maximize shareholder value and the notion that if the share price is increasing, things are going well. These ideas are the intellectual underpinnings of the zero-sum activities of the financial sector for “making money out of money”, by whatever means possible

Like the myths and rituals of the priests of ancient Egypt, shareholder value theory is espoused with religious overtones. Shareholder value, which even Jack Welch has called “the dumbest idea in the world,” remains pervasive in business, even though it is responsible for massive offshoring of manufacturing, thereby destroying major segments of the US economy, undermining US capacity to compete in international markets and killing the economic recovery.

If instead society decides that the financial sector should concentrate on its socially important function of financing the real economy and providing financial security for an ever wider circle of citizens and enterprises, we could enjoy an era of growth and lasting prosperity.

this doesn’t mean that we should follow public opinion.

Most important, it is fluid, inherently malleable and often simply wrong.

But we cannot do anything effectively, decide where to go, how to change things, really anything, if we don’t know what the current situation is.

the really painful message our daughter will receive is that we're embarrassing. For most people who aren't New Atheists, or old atheists, and have no passion invested in the subject, either negative or positive, believers aren't weird because we're wicked. We're weird because we're inexplicable; because, when there's no necessity for it that anyone sensible can see, we've committed ourselves to a set of awkward and absurd attitudes that obtrude, that stick out against the background of modern life, and not in some important or respectworthy or principled way, either.

Believers are people who try to insert Jee-zus into conversations at parties; who put themselves down, with writhings of unease, for perfectly normal human behaviour; who are constantly trying to create a solemn hush that invites a fart, a hiccup, a bit of subversion. Believers are people who, on the rare occasions when you have to listen to them, like at a funeral or a wedding, seize the opportunity to pour the liquidised content of a primary-school nativity play into your earhole, apparently not noticing that childhood is over.

What goes on inside believers is mysterious. So far as it can be guessed at it appears to be a kind of anxious pretending, a kind of continual, nervous resistance to reality.

to me, it's belief that involves the most uncompromising attention to the nature of things of which you are capable. Belief demands that you dispense with illusion after illusion, while contemporary common sense requires continual, fluffy pretending – pretending that might as well be systematic, it's so thoroughly incentivised by our culture.

The atheist bus says: "There's probably no God. So stop worrying and enjoy your life."

the word that offends against realism here is "enjoy". I'm sorry – enjoy your life?

If you based your knowledge of the human species exclusively on adverts, you'd think that the normal condition of humanity was to be a good-looking single person between 20 and 35, with excellent muscle-definition and/or an excellent figure, and a large disposable income. And you'd think the same thing if you got your information exclusively from the atheist bus

The implication of the bus slogan is that enjoyment would be your natural state if you weren't being "worried" by us believers and our hellfire preaching. Take away the malignant threat of God-talk, and you would revert to continuous pleasure

What's so wrong with this, apart from it being total bollocks? Well, in the first place, that it buys a bill of goods, sight unseen, from modern marketing. Given that human life isn't and can't be made up of enjoyment, it is in effect accepting a picture of human life in which those pieces of living where easy enjoyment is more likely become the only pieces that are visible.

But then, like every human being, I am not in the habit of entertaining only those emotions I can prove. I'd be an unrecognisable oddity if I did. Emotions can certainly be misleading: they can fool you into believing stuff that is definitely, demonstrably untrue. Yet emotions are also our indispensable tool for navigating, for feeling our way through, the much larger domain of stuff that isn't susceptible to proof or disproof, that isn't checkable against the physical universe. We dream, hope, wonder, sorrow, rage, grieve, delight, surmise, joke, detest; we form such unprovable conjectures as novels or clarinet concertos; we imagine. And religion is just a part of that, in one sense. It's just one form of imagining, absolutely functional, absolutely human-normal. It would seem perverse, on the face of it, to propose that this one particular manifestation of imagining should be treated as outrageous, should be excised if (which is doubtful) we can manage it.

suppose, as the atheist bus goes by, you are povertystricken, or desperate for a job, or a drug addict, or social services have just taken away your child. The bus tells you that there's probably no God so you should stop worrying and enjoy your life, and now the slogan is not just bitterly inappropriate in mood. What it means, if it's true, is that anyone who isn't enjoying themselves is entirely on their own. What the bus says is: there's no help coming.

Enjoyment is great. The more enjoyment the better. But enjoyment is one emotion. To say that life is to be enjoyed (just enjoyed) is like saying that mountains should only have summits, or that all colours should be purple, or that all plays should be by Shakespeare. This really is a bizarre category error.

A consolation you could believe in would be one that wasn't in danger of popping like a soap bubble on contact with the ordinary truths about us. A consolation you could trust would be one that acknowledged the difficult stuff rather than being in flight from it, and then found you grounds for hope in spite of it, or even because of it

The novelist Richard Powers has written that the Clarinet Concerto sounds the way mercy would sound, and that's exactly how I experienced it in 1997. Mercy, though, is one of those words that now requires definition. It does not only mean some tyrant's capacity to suspend a punishment he has himself inflicted. It can mean – and does mean in this case – getting something kind instead of the sensible consequences of an action, or as well as the sensible consequences of an action.

from outside, belief looks like a series of ideas about the nature of the universe for which a truth-claim is being made, a set of propositions that you sign up to; and when actual believers don't talk about their belief in this way, it looks like slipperiness, like a maddening evasion of the issue.

I am a fairly orthodox Christian. Every Sunday I say and do my best to mean the whole of the Creed, which is a series of propositions. But it is still a mistake to suppose that it is assent to the propositions that makes you a believer. It is the feelings that are primary. I assent to the ideas because I have the feelings; I don't have the feelings because I've assented to the ideas.

what I felt listening to Mozart in 1997 is not some wishy-washy metaphor for an idea I believe in, and it's not a front behind which the real business of belief is going on: it's the thing itself. My belief is made of, built up from, sustained by, emotions like that. That's what makes it real.

I think that Mozart, two centuries earlier, had succeeded in creating a beautiful and accurate report of an aspect of reality. I think that the reason reality is that way – that it is in some ultimate sense merciful as well as being a set of physical processes all running along on their own without hope of appeal, all the way up from quantum mechanics to the relative velocity of galaxies by way of "blundering, low and horridly cruel" biology (Darwin) – is that the universe is sustained by a continual and infinitely patient act of love. I think that love keeps it in being.

That's what I think. But it's all secondary. It all comes limping along behind my emotional assurance that there was mercy, and I felt it. And so the argument about whether the ideas are true or not, which is the argument that people mostly expect to have about religion, is also secondary for me.

No, I can't prove it. I don't know that any of it is true. I don't know if there's a God. (And neither do you, and neither does Professor Dawkins, and neither does anybody. It isn't the kind of thing you can know. It isn't a knowable item.)

let's be clear about the emotional logic of the bus's message. It amounts to a denial of hope or consolation on any but the most chirpy, squeaky, bubble-gummy reading of the human situation

It's got itself established in our culture, relatively recently, that the emotions involved in religious belief must be different from the ones involved in all the other kinds of continuous imagining, hoping, dreaming, and so on, that humans do. These emotions must be alien, freakish, sad, embarrassing, humiliating, immature, pathetic. These emotions must be quite separate from commonsensical us. But they aren't

The emotions that sustain religious belief are all, in fact, deeply ordinary and deeply recognisable to anybody who has ever made their way across the common ground of human experience as an adult.

It's just that the emotions in question are rarely talked about apart from their rationalisation into ideas. This is what I have tried to do in my new book, Unapologetic.

You can easily look up what Christians believe in. You can read any number of defences of Christian ideas. This, however, is a defence of Christian emotions – of their intelligibility, of their grown-up dignity.

our whole universe could have emerged from a tiny patch of space that was stretched like a rubber band by the enormous factor of one hundred trillion trillion times (1026) in a fraction of a second. The universe we observe today fits within this stretched region, like an island in an ocean.

imagine that other portions of space, neighbors to that tiny patch that gave rise to our universe, also got stretched at different rates and at different times. We would have a universe filled with island-universes, each with its own history and possibly even types of matter, etc. This ocean of island-universes is called the multiverse.

Since

hysics is an empirical science

Cosmic inflation predicts that our universe is geometrically flat (or almost) like the surface of a table but in three dimensions; it also predicts that space should be filled with radiation with a uniform temperature, as bathwater fills a bathtub

Since we can't receive information from outside our universe (or better, from outside our "horizon", the sphere that delimits how far light travelled in 13.7 billion years), how can we possibly test the existence of other universes "out there"?

However, we can do the next best thing, and see if at least neighboring universes exist. Just as with soap bubbles that vibrate when they collide with one another without popping, if another universe collided with ours in the distant past, the radiation inside our universe would have vibrated in response to the perturbations caused by the collision.

The bad news is that the probability of a collision with another universe increases with time: we could disappear at any instant: live life to the fullest!

The good news is that, although the multiverse as a whole may not be a testable scientific hypothesis, with some luck we may at least know if one or a few other universes exist. An observational test distinguishes science from idle speculation.

As a result, relatively few playground injuries are now attributable to seesaws. According to data collected by the United States Consumer Product Safety Commission, which sets the safety standards, the top three pieces of equipment associated with emergency room visits between 2009 and 2014 were monkey bars, swings and slides. Only 2 percent of injuries were from teeter-totters.

“A seemingly simple plaything actually provides so many important sensory experiences for kids,” she said.

“The more we live with the safety standards, the more you see people kind of innovating to bring back types of experiences that maybe for a while you weren’t seeing,” she said. “There’s no reason to think we won’t have traditional seesaws in the park at some point.”

When I wrote in August 2015 that Mr. Trump was a cartoon version of every left-wing media stereotype of the reactionary, nativist, misogynist right, I thought that I was well within the mainstream of conservative thought — only to find conservative Trump critics denounced for apostasy by a right that decided that it was comfortable with embracing Trumpism.

relatively few of my listeners bought into the crude nativism Mr. Trump was selling at his rallies.

What they did buy into was the argument that this was a “binary choice.” No matter how bad Mr. Trump was, my listeners argued, he could not possibly be as bad as Mrs. Clinton. You simply cannot overstate this as a factor in the final outcome

Even among Republicans who had no illusions about Mr. Trump’s character or judgment, the demands of that tribal loyalty took precedence. To resist was an act of betrayal.

In this binary tribal world, where everything is at stake, everything is in play, there is no room for quibbles about character, or truth, or principles.

If everything — the Supreme Court, the fate of Western civilization, the survival of the planet — depends on tribal victory, then neither individuals nor ideas can be determinative.

As our politics have become more polarized, the essential loyalties shift from ideas, to parties, to tribes, to individuals. Nothing else ultimately matters.

For many listeners, nothing was worse than Hillary Clinton. Two decades of vilification had taken their toll: Listeners whom I knew to be decent, thoughtful individuals began forwarding stories with conspiracy theories about President Obama and Mrs. Clinton — that he was a secret Muslim, that she ran a child sex ring out of a pizza parlor. When I tried to point out that such stories were demonstrably false, they generally refused to accept evidence that came from outside their bubble. The echo chamber had morphed into a full-blown alternate reality silo of conspiracy theories, fake news and propaganda.

In this political universe, voters accept that they must tolerate bizarre behavior, dishonesty, crudity and cruelty, because the other side is always worse; the stakes are such that no qualms can get in the way of the greater cause.

When it became clear that I was going to remain #NeverTrump, conservatives I had known and worked with for more than two decades organized boycotts of my show. One prominent G.O.P. activist sent out an email blast calling me a “Judas goat,” and calling for postelection retribution.

And then, there was social media. Unless you have experienced it, it’s difficult to describe the virulence of the Twitter storms that were unleashed on Trump skeptics. In my timelines, I found myself called a “cuckservative,” a favorite gibe of white nationalists; and someone Photoshopped my face into a gas chamber. Under the withering fire of the trolls, one conservative commentator and Republican political leader after another fell in line.

we had succeeded in persuading our audiences to ignore and discount any information from the mainstream media. Over time, we’d succeeded in delegitimizing the media altogether — all the normal guideposts were down, the referees discredited.

That left a void that we conservatives failed to fill. For years, we ignored the birthers, the racists, the truthers and other conspiracy theorists who indulged fantasies of Mr. Obama’s secret Muslim plot to subvert Christendom, or who peddled baseless tales of Mrs. Clinton’s murder victims. Rather than confront the purveyors of such disinformation, we changed the channel because, after all, they were our allies, whose quirks could be allowed or at least ignored

We destroyed our own immunity to fake news, while empowering the worst and most reckless voices on the right.

This was not mere naïveté. It was also a moral failure, one that now lies at the heart of the conservative movement even in its moment of apparent electoral triumph. Now that the election is over, don’t expect any profiles in courage from the Republican Party pushing back against those trends; the gravitational pull of our binary politics is too strong.

Complaining about political correctness is patriotically correct. The patriotically correct must use the non-word “illegals,” or “illegal immigrant” or “illegal alien” to describe foreigners who broke our immigration laws. Dissenters support “open borders” or “shamnesty” for 30 million illegal alien invaders. The punishment is deportation because “we’re a nation of laws” and they didn’t “get in line,” even though no such line actually exists. Just remember that they are never anti-immigration, only anti-illegal immigration, even when they want to cut legal immigration.

Black Lives Matter is racist because it implies that black lives are more important than other lives, but Blue Lives Matter doesn’t imply that cops’ lives are more important than the rest of ours. Banning Islam or Muslim immigration is a necessary security measure, but homosexuals should not be allowed to get married because it infringes on religious liberty. Transgender people could access women’s restrooms for perverted purposes, but Donald Trump walking in on nude underage girls in dressing rooms before a beauty pageant is just “media bias.”

Terrorism is an “existential threat,” even though the chance of being killed in a terrorist attack is about 1 in 3.2 million a year. Saying the words “radical Islam” when describing terrorism is an important incantation necessary to defeat that threat. When Chobani yogurt founder Hamdi Ulukaya decides to employ refugees in his factories, it’s because of his ties to “globalist corporate figures.” Waving a Mexican flag on U.S. soil means you hate America, but waving a Confederate flag just means you’re proud of your heritage.

Blaming the liberal or mainstream media and “media bias” is the patriotically correct version of blaming the corporations or capitalism. The patriotically correct notion that they “would rather be governed by the first 2,000 people in the Boston telephone directory than by the 2,000 people on the faculty of Harvard University” because the former have “common sense” and the “intellectual elites” don’t know anything, despite all the evidence to the contrary, can be sustained only in a total bubble.

Poor white Americans are the victims of economic dislocation and globalization beyond their control, while poor blacks and Hispanics are poor because of their failed cultures. The patriotically correct are triggered when they hear strangers speaking in a language other than English. Does that remind you of the PC duty to publicly shame those who use unacceptable language to describe race, gender or whatever other identity is the victim du jour?

The patriotically correct rightly ridicule PC “safe spaces” but promptly retreat to Breitbart or talk radio, where they can have mutually reinforcing homogeneous temper tantrums while complaining about the lack of intellectual diversity on the left.

There is no such thing as too much national security, but it’s liberals who want to coddle Americans with a “nanny state.”

Those who disagree with the patriotically correct are animated by anti-Americanism, are post-American, or deserve any other of a long list of clunky and vague labels that signal virtue to other members of the patriotic in-group.

Every group has implicit rules against certain opinions, actions and language as well as enforcement mechanisms — and the patriotically correct are no exception. But they are different because they are near-uniformly unaware of how they are hewing to a code of speech and conduct similar to the PC lefties they claim to oppose.

The modern form of political correctness on college campuses and the media is social tyranny with manners, while patriotic correctness is tyranny without the manners, and its adherents do not hesitate to use the law to advance their goals.

One common strategy for thinking about this is to suggest that what we used to call the whole universe is just a small part of everything there is, and that we live in a kind of bubble universe, a small region of something much larger

Newton realized there had to be some force holding the moon in its orbit around the earth, to keep it from wandering off, and he knew also there was a force that was pulling the apple down to the earth. And so what suddenly struck him was that those could be one and the same thing, the same force

That was a physical discovery, a physical discovery of momentous importance, as important as anything you could ever imagine because it knit together the terrestrial realm and the celestial realm into one common physical picture. It was also a philosophical discovery in the sense that philosophy is interested in the fundamental natures of things.

The problem is that quantum mechanics was developed as a mathematical tool. Physicists understood how to use it as a tool for making predictions, but without an agreement or understanding about what it was telling us about the physical world. And that's very clear when you look at any of the foundational discussions. This is what Einstein was upset about; this is what Schrodinger was upset about. Quantum mechanics was merely a calculational technique that was not well understood as a physical theory. Bohr and Heisenberg tried to argue that asking for a clear physical theory was something you shouldn't do anymore. That it was something outmoded. And they were wrong, Bohr and Heisenberg were wrong about that. But the effect of it was to shut down perfectly legitimate physics questions within the physics community for about half a century. And now we're coming out of that

The basic philosophical question, going back to Plato, is "What is x?" What is virtue? What is justice? What is matter? What is time? You can ask that about dark energy - what is it? And it's a perfectly good question.

right now there are just way too many freely adjustable parameters in physics. Everybody agrees about that. There seem to be many things we call constants of nature that you could imagine setting at different values, and most physicists think there shouldn't be that many, that many of them are related to one another. Physicists think that at the end of the day there should be one complete equation to describe all physics, because any two physical systems interact and physics has to tell them what to do. And physicists generally like to have only a few constants, or parameters of nature. This is what Einstein meant when he famously said he wanted to understand what kind of choices God had --using his metaphor-- how free his choices were in creating the universe, which is just asking how many freely adjustable parameters there are. Physicists tend to prefer theories that reduce that number

You have others saying that time is just an illusion, that there isn't really a direction of time, and so forth. I myself think that all of the reasons that lead people to say things like that have very little merit, and that people have just been misled, largely by mistaking the mathematics they use to describe reality for reality itself. If you think that mathematical objects are not in time, and mathematical objects don't change -- which is perfectly true -- and then you're always using mathematical objects to describe the world, you could easily fall into the idea that the world itself doesn't change, because your representations of it don't.

physicists for almost a hundred years have been dissuaded from trying to think about fundamental questions. I think most physicists would quite rightly say "I don't have the tools to answer a question like 'what is time?' - I have the tools to solve a differential equation." The asking of fundamental physical questions is just not part of the training of a physicist anymore.

The question remains as to how often, after life evolves, you'll have intelligent life capable of making technology. What people haven't seemed to notice is that on earth, of all the billions of species that have evolved, only one has developed intelligence to the level of producing technology. Which means that kind of intelligence is really not very useful. It's not actually, in the general case, of much evolutionary value. We tend to think, because we love to think of ourselves, human beings, as the top of the evolutionary ladder, that the intelligence we have, that makes us human beings, is the thing that all of evolution is striving toward. But what we know is that that's not true. Obviously it doesn't matter that much if you're a beetle, that you be really smart. If it were, evolution would have produced much more intelligent beetles. We have no empirical data to suggest that there's a high probability that evolution on another planet would lead to technological intelligence.

Furthermore, Obama argues, because of our history, American military efforts are looked at with suspicion. Allies are unreliable. Ukraine is always going to be in Russia’s sphere of influence, so its efforts there will always trump ours. The Middle East is a morass and no longer that important to U.S. interests.

Do you think out loud in tandem with a community, or do you process internally? Throughout the Goldberg article, Obama is seen thinking deeply and subtly, but apart from the group around him. In catlike fashion, he is a man who knows his own mind and trusts his own judgment. His decision not to bomb Syria after it crossed the chemical weapons red line was made almost entirely alone.

More generally, Obama expresses disdain with the foreign policy community. He is critical of most of his fellow world leaders — impatient with most European ones, fed up with most Middle Eastern ones.

When seeking a description of a situation, does your mind leap for the clarifying single truth or do you step back to see the complex web of factors? Ronald Reagan typified the single clarifying truth habit of mind, both when he was describing an enemy (Evil Empire) and when he was calling for change (tear down this wal

, Obama leans to the other side of the spectrum. He is continually stepping back, starting with analyses of human nature, how people behave when social order breaks down, the roots and nature of tribalism.

Do you see international affairs as a passionate struggle or a conversation and negotiation? Continue reading the main story 343 Comments Obama shows a continual distrust of passion. He doesn’t see much value in macho bluffing or chest-thumping, or in lofty Churchillian rhetoric, or in bombings done in the name of “credibility.”

He may be critical, but he is not a hater. He doesn’t even let anger interfere with his appraisal of Vladimir Putin

it’s striking how many Americans have responded by going for Donald Trump and Bernie Sanders, who are bad versions of the bounding in/we-can-change-everything doggy type.