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The administration of President Park Geun-hye also knows that history is a powerful tool for molding young minds. That is why, after weeks of rancorous public debate, on Nov. 3 it made official its decision to replace current middle and high school history textbooks produced by private publishers with government-issued ones by 2017. The announcement was condemned by many scholars and the political opposition.

The International Astronomical Union (IAU) got it wrong. Our solar system has 10 planets. As NASA's New Horizons spacecraft glides its way to the cold outer reaches of our solar system to take the first-ever up-close look at Pluto, the time is right to revise the International Astronomical Union (IAU)'s 2006 definition of a planet, which resulted in Pluto's "demotion" from planet to ambiguous dwarf-planet status.

“Estimating the Reproducibility of Psychological Science,” from Science This paper isn’t really a study; it’s the outcome of an important movement in the field of psychology. In an effort called the Reproducibility Project, researchers at dozens of universities collaborated to replicate a hundred psychology studies that were initially conducted in 2008. They ended up replicating between a third and half of the studies. Is that result bad or good? It’s inevitable that studies won’t always be replicable—if every study could be replicated, then every researcher would be right the first time; even legitimate findings can prove fragile when you try to repeat them. All the same, the paper concludes that there is “room for improvement” in psychology, especially when it comes to “cultural practices in scientific communication.” Specifically, the authors propose that “low-power research designs combined with publication bias favoring positive results together produce a literature with upwardly biased effect sizes.” In other words, the desire for novelty drives researchers to overestimate the conclusiveness of their own work. It’s a fascinating and valuable effort to make sure that psychology moves forward in the best way possible.

The ‘‘-phobic’’ suffix has emerged as the activist’s most trusted term of art for pinning prejudice on an opponent. There’s ‘‘xenophobic,’’ ‘‘homophobic,’’ ‘‘Islamophobic,’’ ‘‘transphobic,’’ ‘‘fatphobic’’ and ‘‘whorephobic’’: Any blowhard who spews bigotry against a marginalized group — or any journalist who pens an article perceived as insufficiently sensitive — risks being called out for an irrational anxiety over one Other or another. When did this particular diagnosis become such a powerful weapon in the identity wars?

It would seem that in situations like the current Greek crisis, we should be able to rely on economics to tell us which policies are most likely to work. But does the discipline have sufficient predictive power to play an important role in our debates about public policy?

The problems that we want economists to help us solve are more like predicting how leaves will fall on a windy day than predicting how objects will fall in a vacuum. Economic phenomena are affected by a very large number of causal factors of many different kinds.

TWO of our most vital industries, health care and education, have become increasingly subjected to metrics and measurements. Of course, we need to hold professionals accountable. But the focus on numbers has gone too far. We’re hitting the targets, but missing the point.

"Tell me what fear is," Tranel began. "Well, that's what I'm trying to -- to be honest, I truly have no clue," SM said, her voice raspy. That's actually a symptom of the condition that stole fear from her. Urbach-Wieth disease

Even though she's a talented artist, she always has trouble drawing (or reading) a fearful facial expression. "I wonder what it's like, you know, to actually be afraid of something," she told Tranel.

That's actually just one of two times that SM has been held at knife point. She's also been held at gunpoint twice. And after the above incident, she didn't feel like she should call the police. The threat had passed. She didn't have any lasting trauma, because the event had failed to faze her. SM isn't stupid. She understands what can and can't kill her. But she lacks the quick, subconscious, visceral response that the rest of us feel when we're exposed to danger.

That the Islamic State has made violent use of history shouldn’t come as a surprise. Perhaps more surprising is that in all those places where a modern nation has been grafted onto an ancient culture, history has returned with a vengeance. From Confucian China to Buddhist Myanmar to Hindu India, history has become the source of a fierce new conservatism that is being used to curb freedoms of women and stoke hatred of minorities. As the ultimate source of legitimacy, history has become a way for modernizing societies to procure the trappings of modernity while guarding themselves from its values.

Crohn’s disease affects as many as seven hundred thousand Americans, but, like other autoimmune disorders, it remains poorly understood and is considered incurable. (Autoimmune disorders are thought to arise when the immune system attacks healthy tissue, mistaking it for a threat.) The standard treatments for Crohn’s often don’t work, or work only temporarily, and many have serious side effects.

Nuremberg is not alone in dealing anew with its Nazi heritage. The entire country has been swept into a debate this year about the release of a new edition of “Mein Kampf,” the first time Hitler’s book has been published in Germany in 70 years. Both clashes come as Germany faces the reemergence of xenophobia that has flared as the country sits at the center of Europe’s refugee crisis. Some worry that both the book and the buildings, if renovated, will become rallying points for today’s neo-Nazis. 

The debates in Germany highlight a fundamental question that many countries in the world struggle with: What do you do with symbols of a past that many people today find abhorrent?In the United States, fights over the display of the Confederate flag in public places surface almost weekly. Ukraine is systematically removing statues of Vladimir Lenin and other totems of the country’s Soviet past. In Spain, where authorities in Madrid are renaming streets that commemorate Francisco Franco, divisions simmer over demands to remove the late dictator’s body from the vast monument named  Valley of the Fallen that glorifies his reign.The Rising Sun flag – a controversial symbol of Japan’s imperial history – is still used by the country’s Maritime Self-Defense Force, much to the anger of Japan’s neighbors. Britain has been embroiled in a controversy over whether to remove a statue of Cecil Rhodes – for whom the prestigious Rhodes scholarship is named – from a college at Oxford University because of critics’ concerns about his ties to Southern Africa’s colonial and racist past. The university says it will stay right where it is.

Yet in few places do historical symbols evoke more sensitivity than in Germany. 

A landmark 2015 report that cast doubt on the results of dozens of published psychology studies has exposed deep divisions in the field, serving as a reality check for many working researchers but as an affront to others who continue to insist the original research was sound. On Thursday, a group of four researchers publicly challenged the report, arguing that it was statistically flawed and, as a result, wrong.The 2015 report, called the Reproducibility Project, found that less than 40 studies in a sample of 100 psychology papers in leading journals held up when retested by an independent team. The new critique by the four researchers countered that when that team’s statistical methodology was adjusted, the rate was closer to 100 percent.

In other words, we need to be able to tell when we believe or disbelieve in something based on high standards of evidence and when we are just engaging in a bit of motivated reasoning and letting our opinions take over. When we withhold belief because the evidence does not live up to the standards of science, we are skeptical. When we refuse to believe something, even in the face of what most others would take to be compelling evidence, we are engaging in denial. In most cases, we do this because at some level it upsets us to think that the theory is true.

So how to tell a fact from an opinion? By the time we sit down to evaluate the evidence for a scientific theory, it is probably too late. If we take the easy path in our thinking, it eventually becomes a habit. If we lie to others, sooner or later we may believe the lie ourselves. The real battle comes in training ourselves to embrace the right attitudes about belief formation in the first place, and for this we need to do a little philosophy.

Too often in our debates about freedom of speech, we assume that it already exists and that it is campus activists, particularly over questions of race, who threaten it. But what Princeton’s students have shown is that, before they came along, there was in fact precious little speech about figures like Wilson, and what speech there was, was mostly bland PR for tourists and prospective students. Even more important, Princeton’s students have shown us that it is precisely the kinds of actions they have taken — which are uncivil, frequently illegal and always unruly — that produce speech.

While my general approach to history is one of modulation — past imperfect, always — I’m leery of those who would say, against the students, don’t erase the past. I’m leery of these critics’ timing: if there’s any erasing going on here, it’s in the daily practices of Princeton. In those campus tours, those campus addresses, the general celebration of the man. Why haven’t we heard criticism of how the past is being erased by Princeton’s celebration of Wilson?I’m also leery of these critics’ assumptions that removing a name from a building is about erasing the past. As if once the name is gone, all conversation stops, all memory disappears.

The idea that poverty can change the brain has gotten significant attention recently, and not just from those lay readers (a minority, according to recent research) who spend a lot of time thinking about neuroscience. Policy makers and others have begun to apply neuroscientific principles to their thinking about poverty — and some say this could end up harming poor people rather than helping. At The Conversation, the sociologist Susan Sered takes issue with “news reports with headlines like this one: ‘Can Brain Science Help Lift People Out Of Poverty?’” She’s referring to a June story by Rachel Zimmerman at WBUR, about a nonprofit called Crittenton Women’s Union that aims to use neuroscience to help get people out of poverty. Elisabeth Babcock, Crittenton’s chief executive, tells Ms. Zimmerman: “What the new brain science says is that the stresses created by living in poverty often work against us, make it harder for our brains to find the best solutions to our problems. This is a part of the reason why poverty is so ‘sticky.’”

People often have vicious thoughts. Sometimes they share them on Google. Do these thoughts matter?Yes. Using weekly data from 2004 to 2013, we found a direct correlation between anti-Muslim searches and anti-Muslim hate crimes.

We tell lies to one another every day. But when we commit other acts that are generally believed to be immoral, like cruelty and theft, we do not seek to justify them. We either deny that the acts we committed are appropriately described by these terms, or we feel guilt or remorse. But many of us are prepared to defend our lies: indeed, to advocate their general use.

Nevertheless, it is my claim that we could not lead our lives if we never told lies — or that if we could it would be a much worse life. But I would like to invite your own views on this to begin a dialog. Here is a list of lies that I believe to be either permissible, or, in some cases, obligatory. Readers will certainly disagree with me about some, perhaps many, of these cases. But such disagreement should not be the end of the discussion. I invite your reflection on why you disagree.

How big do the numbers have to be for insensitivity to begin? Not very, it turns out.

Consider the recent death of the Syrian child Aylan Kurdi when his family braved the choppy seas off the coast of Turkey. The image of Aylan lying face down on the beach captivated the world’s attention and even, in short order, resulted in refugee policy changes in countries as far away as the United States. But 14 Syrian children drowned in the Aegean Sea the next day. Did you notice? Did you care?