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even genuine scientists are human and as such susceptible to the allure of offering up new paradigms (as the historian of science Thomas Kuhn put it)

paleontologist Stephen Jay Gould insisted that his conception of “punctuated equilibria” (a kind of Marxist biology that blurred the lines between evolution and revolution), which he developed along with fellow paleontologist Niles Eldredge, upended the traditional Darwinian understanding of how natural selection works.

This notion doesn’t constitute a fundamental departure from plain old evolution by natural selection; it simply italicizes that sometimes the process is comparatively rapid, other times slower.

In addition, they have long had a peculiar perspective on evolution, because of the limitations of the fossil record

Darwin was a pioneering geologist as well as the greatest of all biologists, and his insights were backgrounded by the key concept of uniformitarianism, as advocated by Charles Lyell, his friend and mentor

previously regnant paradigm among geologists had been “catastrophism

fossil record was therefore seen as reflecting the creation and extinction of new species by an array of dramatic and “unnatural” dei ex machina.

Of late, however, uniformitarianism has been on a losing streak. Catastrophism is back, with a bang . . . or a flood, or a burst of extraterrestrial radiation, or an onslaught of unpleasant, previously submerged chemicals

This emphasis on catastrophes is the first of a triad of novelties on which “A New History of Life” is based. The second involves an enhanced role for some common but insufficiently appreciated inorganic molecules, notably carbon dioxide, oxygen and hydrogen sulfide.

Life didn’t so much unfold smoothly over hundreds of millions of years as lurch chaotically in response to diverse crises and opportunities: too much oxygen, too little carbon dioxide, too little oxygen, too much carbon dioxide, too hot, too cold

So far, so good, except that in their eagerness to emphasize what is new and different, the authors teeter on the verge of the same trap as Gould: exaggerating the novelty of their own ideas.

Things begin to unravel when it comes to the third leg of Messrs. Ward and Kirschvink’s purported paradigmatic novelty: a supposed role for ecosystems—rain forests, deserts, rivers, coral reefs, deep-sea vents—as units of evolutionary change

“While the history of life may be populated by species,” they write, “it has been the evolution of ecosystems that has been the most influential factor in arriving at the modern-day assemblage of life. . . . [W]e know that on occasion in the deep past entirely new ecosystems appear, populated by new kinds of life.” True enough, but it is those “new kinds of life,” not whole ecosystems, upon which natural selection acts.

One of the most common popular misconceptions about evolution is that it proceeds “for the good of the species.”

The problem is that smaller, nimbler units are far more likely to reproduce differentially than are larger, clumsier, more heterogeneous ones. Insofar as ecosystems are consequential for evolution—and doubtless they are—it is because, like occasional catastrophes, they provide the immediate environment within which something not-so-new is acted out.

This is natural selection doing its same-old, same-old thing: acting by a statistically potent process of variation combined with selective retention and differential reproduction, a process that necessarily operates within the particular ecosystem that a given lineage occupies.

Dory, voiced by comedian Ellen DeGeneres, suffers classic symptoms of anterograde amnesia, which is typically associated with damage to the hippocampus, the area of the brain involved in encoding memories.

the portrayal of the condition is spot on. She has difficulty remembering names and retaining new information, but her condition doesn’t affect her sense of identity.

it’s just a perfect example of the neuromyth

Jason Bourne, the amnesiac main character of this action flick, exhibits no trouble with short-term memories, but wakes up after suffering an unspecified injury to the brain with no recollection of who he is.

explaining that the “double conk” myth – the idea that someone can lose their identity after being hit in the head and regain it after a second blow or psychological trigger – is actually a conflation of two ideas.

Identity loss is more closely associated with psychogenic amnesia, an extremely rare and controversial diagnosis, whose origins, some experts believe, may be influenced by culture.

This sci-fi action film relies on the conceit that humans only use 10 per cent of their brains.

Sure, filmmakers may take artistic licence, she says, but the trouble is many people actually believe we only use a portion of our brains.

she notes that due to its success, the film may have inadvertently contributed to the stereotype of the autistic savant – the notion that people with autism excel in a specific area, which, in the case of Hoffman’s character, involved dealing in numbers. In reality, Spiers says, this is very rare.

pi’s infinite randomness can also be seen more as richness. What amazes, then, is the possibility that such profusion can come from a rule so simple: circumference divided by diameter. This is characteristic of mathematics, whereby elementary formulas can give rise to surprisingly varied phenomena. For instance, the humble quadratic can be used to model everything from the growth of bacterial populations to the manifestation of chaos. Pi makes us wonder if our universe’s complexity emerges from similarly simple mathematical building blocks.

Pi also opens a window into a more uncharted universe, the one consisting of transcendental numbers, which exclude such common irrationals as square and cube roots. Pi is one of the few transcendentals we ever encounter. One may suspect that such numbers would be quite rare, but actually, the opposite is true. Out of the totality of numbers, almost all are transcendental. Pi reveals how limited human knowledge is, how there exist teeming realms we might never explore.

But pi, on cue, reminds us that it is an abstraction, like all else in mathematics. The perfect flat circle is impossible to realize in practice. An area calculated using pi will never exactly match the same area measured physically. This is to be expected whenever we approximate reality using the idealizations of math.

Jean-Benoît Nadeau, a Canadian who co-wrote a forthcoming book on French conversation, told me that the penchant for saying “no” or “it’s not possible” is often a cover for the potential humiliation of seeming not to know something. Only once you trust someone can you turn down the wit and reveal your weaknesses

At least it’s not boring. Even among friends, being dull is almost criminal. A French entrepreneur told me her rules for dinner-party topics: no kids, no jobs, no real estate. Provocative opinions are practically required. “You must be a little bit mean but also a little bit vulnerable,” she said.

It’s dizzying to switch to the British conversational mode, in which everyone’s trying to show they don’t take themselves seriously. The result is lots of self-deprecation and ironic banter. I’ve sat through two-hour lunches in London waiting for everyone to stop exchanging quips so the real conversation could begin. But “real things aren’t supposed to come up,” my husband said. “Banter can be the only mode of conversation you ever have with someone.”

Earnestness makes British people gag

After being besieged by British irony and French wit, I sometimes yearn for the familiar comfort of American conversations, where there are no stupid questions. Among friends, I merely have to provide reassurance and mirroring: No, you don’t look fat, and anyway, I look worse.

It might not matter what I say, since some American conversations resemble a succession of monologues. A 2014 study led by a psychologist at Yeshiva University found that when researchers crossed two unrelated instant-message conversations, as many as 42 percent of participants didn’t notice

A lot of us — myself included — could benefit from a basic rule of improvisational comedy: Instead of planning your next remark, just listen very hard to what the other person is saying. Call it “mindful conversation,” if you like. That’s what the French tend to do

The researchers found that the broad split in age-related cognition — fluid in the young, crystallized in the old — masked several important nuances.

A year ago, German scientists argued that cognitive “deficits” in aging were caused largely by the accumulation of knowledge — that is, the brain slows down because it has to search a larger mental library of facts

Experts said the new analysis raised a different question: Are there distinct, independent elements of memory and cognition that peak at varying times of life?

The strength of the new analysis is partly in its data. The study evaluated historic scores from the popular Wechsler intelligence test, and compared them with more recent results from tens of thousands of people who took short cognitive tests on the authors’ websites, testmybrain.org and gameswithwords.org

The one drawback of this approach is that, because it didn’t follow the same people over a lifetime, it might have missed the effect of different cultural experiences

most previous studies have not been nearly as large, or had such a range of ages. Participants on the websites were 10 to 89 years old, and they took a large battery of tests, measuring skills like memory for abstract symbols and strings of digits, problem solving, and facility reading emotions from strangers’ eyes.

At least as important, the researchers looked at the effect of age on each type of test.

“We found different abilities really maturing or ripening at different ages,” Dr. Germine said. “It’s a much richer picture of the life span than just calling it aging.”

Processing speed — the quickness with which someone can manipulate digits, words or images, as if on a mental sketch board — generally peaks in the late teens

memory for some things, like names, does so in the early 20s

But the capacity of that sketch board, called working memory, peaks at least a decade later and is slow to decline. In particular, the ability to recall faces and do some mental manipulation of numbers peaked about age 30,

The researchers also analyzed results from the Reading the Mind in the Eyes test. The test involves looking at snapshots of strangers’ eyes on a computer screen and determining their moods from a menu of options like “tentative,” “uncertain” and “skeptical.”

people in their 40s or 50s consistently did the best, the study found, and the skill declined very slowly later in life

The picture that emerges from these findings is of an older brain that moves more slowly than its younger self, but is just as accurate in many areas and more adept at reading others’ moods — on top of being more knowledgeable. That’s a handy combination, given that so many important decisions people make intimately affects others.

for now, the new research at least gives some meaning to the empty adjective “wily.”

But nothing worked particularly well until they began an inspired public relations offensive that cast capitalism as the handmaiden of Christianity.The two had been described as soul mates before, but in this campaign they were wedded in pointed opposition to the “creeping socialism” of the New Deal

Accordingly, throughout the 1930s and ’40s, corporate leaders marketed a new ideology that combined elements of Christianity with an anti-federal libertarianism.

Powerful business lobbies like the United States Chamber of Commerce and the National Association of Manufacturers led the way, promoting this ideology’s appeal in conferences and P.R. campaigns. Generous funding came from prominent businessmen

In a shrewd decision, these executives made clergymen their spokesmen.

businessmen worked to recruit clergy through private meetings and public appeals. Many answered the call

The most important clergyman for Christian libertarianism, though, was the Rev. Billy Graham.

In his initial ministry, in the early 1950s, Mr. Graham supported corporate interests so zealously that a London paper called him “the Big Business evangelist.” The Garden of Eden, he informed revival attendees, was a paradise with “no union dues, no labor leaders, no snakes, no disease.” In the same spirit, he denounced all “government restrictions” in economic affairs, which he invariably attacked as “socialism.”

Dwight D. Eisenhower fulfilled that prediction. With Mr. Graham offering Scripture for Ike’s speeches, the Republican nominee campaigned in what he called a “great crusade for freedom.

Elected in a landslide, Eisenhower told Mr. Graham that he had a mandate for a “spiritual renewal.”

Although Eisenhower relied on Christian libertarian groups in the campaign, he parted ways with their agenda once elected. The movement’s corporate sponsors had seen religious rhetoric as a way to dismantle the New Deal state.

But the newly elected president thought that a fool’s errand. “Should any political party attempt to abolish Social Security, unemployment insurance, and eliminate labor laws and farm programs,” he noted privately, “you would not hear of that party again in our political history.”

Unlike those who held public spirituality as a means to an end, Eisenhower embraced it as an end unto itself.

Uncoupling the language of “freedom under God” from its Christian libertarian roots, Eisenhower erected a bigger revival tent, welcoming Jews and Catholics alongside Protestants, and Democrats as well as Republicans. Rallying the country, he advanced a revolutionary array of new religious ceremonies and slogans.

The rest of Washington consecrated itself, too. The Pentagon, State Department and other executive agencies quickly instituted prayer services of their own. In 1954, Congress added “under God” to the previously secular Pledge of Allegiance. It placed a similar slogan, “In God We Trust,” on postage that year and voted the following year to add it to paper money; in 1956, it became the nation’s official motto.

During these years, Americans were told, time and time again, not just that the country should be a Christian nation, but that it always had been one. They soon came to think of the United States as “one nation under God.” They’ve believed it ever since.

Perhaps all the things that led to the security situation in Ferguson being handed over to cooler heads would have ensued. But nothing much good was happening in Ferguson until it became a hashtag.

Page predicted a “time of abundance,” when human needs could be more easily met and people would “have more time with their family or to pursue their own interests.”

Of course, when we get more free time, we’ll simply spend it staring at our iPads

“In a way, it’s not being honest,” he said. “We’re still pretending that we’re inventing a brain when all we’ve come up with is a giant mash-up of real brains. We don’t yet understand how brains work, so we can’t build one.”

“People are unwittingly feeding information into the Cloud for automated services, which they’re not being paid for,” Lanier said. “I don’t like pretending that humans are becoming buggy whips. You have this fantasy that it’s machines doing it without people helping.

The project is called the Program for the International Assessment of Adult Competencies (known as Piaac, sometimes called “pee-ack”). In 2011 and 2012, 166,000 adults ages 16 to 65 were tested in the O.E.C.D. countries

Like PISA, Piaac tests people’s literacy and math skills. Because the test takers were adults, they were asked to use those skills in real-world contexts.

As with the measures of K-12 education, the United States battles it out for last place, this time with Italy and Spain.

Only 18 percent of American adults with bachelor’s degrees score at the top two levels of numeracy, compared with the international average of 24 percent. Over one-third of American bachelor’s degree holders failed to reach Level 3 on the five-level Piaac scale, which means that they cannot perform math-related tasks that “require several steps and may involve the choice of problem-solving strategies.”

American results on the literacy and technology tests were somewhat better, in the sense that they were only mediocre. American adults were eighth from the bottom in literacy, for instance. And recent college graduates look no better than older ones. Among people ages 16 to 29 with a bachelor’s degree or better, America ranks 16th out of 24 in numeracy.

There is no reason to believe that American colleges are, on average, the best in the world.

Instead, Piaac suggests that the wide disparities of knowledge and skill present among American schoolchildren are not ameliorated by higher education. If anything, they are magnified. In 2000, American 15-year-olds scored slightly above the international average. Twelve years later, Americans who were about 12 years older scored below the international average.

“The character identification is the driving force,” says Wells, whose own research focusses on perception and the visual appeal of film. “It’s why people tend to identify with that medium always—it allows them to be put in those roles and experiment through that.”

one theme seemed to resonate: everyone could identify with Elsa. She wasn’t your typical princess. She wasn’t your typical Disney character. Born with magical powers that she couldn’t quite control, she meant well but caused harm, both on a personal scale (hurting her sister, repeatedly) and a global one (cursing her kingdom, by mistake). She was flawed—actually flawed, in a way that resulted in real mistakes and real consequences. Everyone could interpret her in a unique way and find that the arc of her story applied directly to them

what does all of this mean for “Frozen”? On the one hand, the movie shares many typical story elements with other Disney films. There are the parents dead within the first ten minutes (a must, it seems, in Disney productions), royalty galore, the quest to meet your one true love, the comic-relief character (Olaf the Snowman) to punctuate the drama. Even the strong female lead isn’t completely new

In 2012, he and Simonton conducted a study of two hundred and twenty family films released between 1996 and 2009, to see whether successful children’s movies had certain identifying characteristics. They found that films that dealt with nuanced and complex themes did better than those that played it safe, as measured both by ratings on metacritic.com, rottentomatoes.com, and IMDb and by over-all financial performance.

the story keeps the audience engaged because it subverts expected tropes and stereotypes, over and over. “It’s the furthest thing from a typical princess movie,”

It also, unlike prior Disney films, aces the Bechdel Test: not only are both leads female, but they certainly talk about things other than men. It is the women, in fact, not the men, who save the day, repeatedly—and a selfless act of sacrifice rather than a “kiss of true love” that ends up winning.

She recalls the sheer diversity of the students who joined the discussion: a mixture, split evenly between genders, of representatives of the L.G.B.T. community, artists, scientists.

“A good story, issues to think about and wrestle with,”

Simonton and Kaufman were able to explain only twenty to twenty-four per cent of variance in critical success and twenty-five in domestic gross earnings.

The other element, of course, is that intangible that Litman calls “buzz” and Simonson calls “information cascades,” the word of mouth that makes people embrace the story,

Part of the credit goes to Disney’s strategy. In their initial marketing campaign, they made an effort to point out the story’s uniqueness.

And their lawyers allowed the music to spread naturally through social media.

part of the credit goes to Jennifer Lee’s team, for the choices they consciously made to make the screenplay as complex as it was. Elsa was once evil; Elsa and Anna weren’t originally sisters; the prince wasn’t a sociopath. Their decisions to forego a true villain—something no Disney film had successfully done—and to make the story one driven by sibling love rather than romantic infatuation have made “Frozen” more than simply nuanced and relatable. They’ve made it more universally acceptable.

In contrast to other recent Disney films, like “Tangled,” “Frozen” isn’t politically fraught or controversial: you can say it’s good without fear of being accused of being a racist or an apologist or an animal-rights opponent

to echo the words of the screenwriting legend William Goldman, “Nobody knows anything.” In the end, it may just be a bit of magic.

concluded from their study comparing identical and fraternal twins that “the correlation between religious importance and conservatism” is “driven primarily, but usually not exclusively, by genetic factors.” The substantial “genetic component in these relationships suggests that there may be a common underlying predisposition that leads individuals to adopt conservative bedrock social principles and political ideologies while simultaneously feeling the need for religious experiences.”

the Democratic Party — supportive of abortion rights, same-sex marriage and the primacy of self-expressive individualism over obligation to family — is irreconcilably alien to a segment of the electorate.

If these predispositions are, as Friesen and Ksiazkiewicz argue, to some degree genetically rooted, they may not lend themselves to rational debate and compromise.

based on the correlations presented here, knowing the scores of one identical twin gives you a pretty good indication of the scores of the other.”

the outcome of the 19 presidential elections since 1940: Nine Republican victories; 10 for Democrats. In those races, the winner received less than 53 percent of the vote in 10 elections. This equilibrium suggests that political opinion may be less volatile, and more firmly grounded, than is sometimes suspected.

“To the extent that my political opinions can be predicted by my genome, or by an identical twin separated from me at birth who grew up halfway across the world,” Pinker writes, “I have reason to question whether those opinions are justifiable by reason or evidence rather than a reflection of my temperament.”

“the discovery that political ideologies are partly heritable points our attention to what the common psychological threads of competing ideologies are – namely temperamental differences such as authoritarianism, conscientiousness, and openness to experience, together with intellectual differences such as intelligence. These could help pinpoint some of the common denominators beneath competing ideologies which cut across the particular hot buttons of the particular era.”

such research can enhance our understanding of the larger framework within which public discourse and debate shape key outcomes.

We need every tool available to increase our understanding of our systems of self-governance and of how we came to be the political animals that we are.

ut biological complexity is only part of the challenge in figuring out what kind of theory of the brain we’re seeking.

What we are really looking for is a bridge, some way of connecting two separate scientific languages — those of neuroscience and psychology.

An example is the discovery of DNA, which allowed us to understand how genetic information could be represented and replicated in a physical structure. In one stroke, this bridge transformed biology from a mystery — in which the physical basis of life was almost entirely unknown — into a tractable if challenging set of problems

We know that there must be some lawful relation between assemblies of neurons and the elements of thought, but we are currently at a loss to describe those laws.

To understand why this matters, you have to know a little bit about the many tribes within the world of economics.

There are the academic economists who study the forces shaping the modern economy. Their work is rigorous but often obscure. Some of them end up in important policy jobs (See: Bernanke, B.) or write books for a mass audience (Piketty, T.), but many labor in the halls of academia for decades writing carefully vetted articles for academic journals that are rigorous as can be but are read by, to a first approximation, no one.

Then there are the economists in what can broadly be called the business forecasting community. They wear nicer suits than the academics, and are better at offering a glib, confident analysis of the latest jobs numbers delivered on CNBC or in front of a room full of executives who are their clients. They work for ratings firms like S.&P., forecasting firms like Macroeconomic Advisers and the economics research departments of all the big banks.

they are trying to do the practical work of explaining to clients — companies trying to forecast future demand, investors trying to allocate assets — how the economy is likely to evolve. They’re not really driven by ideology, or by models that are rigorous enough in their theoretical underpinnings to pass academic peer review. Rather, their success or failure hinges on whether they’re successful at giving those clients an accurate picture of where the economy is heading.

worries that income inequality is a factor behind subpar economic growth over the last five years (and really the last 15 years) is going from an idiosyncratic argument made mainly by left-of center economists to something that even the tribe of business forecasters needs to wrestle with.

Because the affluent tend to save more of what they earn rather than spend it, as more and more of the nation’s income goes to people at the top income brackets, there isn’t enough demand for goods and services to maintain strong growth, and attempts to bridge that gap with debt feed a boom-bust cycle of crises, the report argues. High inequality can feed on itself, as the wealthy use their resources to influence the political system toward policies that help maintain that advantage, like low tax rates on high incomes and low estate taxes, and underinvestment in education and infrastructur

The report itself does not break any major new analytical or empirical ground. It spends many pages summarizing the findings of various academic and government economists who have studied inequality and its discontents, and stops short of recommending any radical policy changes

We get more of what we signal we want through our dollars, clicks and votes. If our politics are too often poisonous, it is because, as a society, we are demanding too much poison.

We should ask ourselves: What will my next click say about my desires? Will the next article about politics I read elevate me? Or will it be a pathogen that provides momentary satisfaction from an eloquent insult to my enemies, but ultimately fuels personal bitterness and increases the climate of acrimony in America?

what do we really demand of the politicians we support? Humility, optimism and flexibility? Or do we excuse our own side for its ideological rigidity, preening self-regard and blame-shifting?

The next two years are a challenge to our political leaders, yes — but also to us, to demand a climate of moral elevation as opposed to destruction of the other side.

Agency is not automatic. It has to be given birth to, with pushing and effort. It’s not just the confidence and drive to act. It’s having engraved inner criteria to guide action. The agency moment can happen at any age, or never. I guess that’s when adulthood starts.

convicted along with Bridgeman and Bridgeman’s brother, Ronnie, in the 1975 shooting death and robbery of Harold Franks, a Cleveland-area money order salesman.

Jackson was originally sentenced to death but that sentence was vacated because of a paperwork error. The Bridgeman brothers remained on death row until Ohio declared the death penalty unconstitutional in 1978.

“So money equals speech?” I asked. No, he said. “But nobody speaks very effectively without money. If you limit how much you spend on speech, you are also limiting speech.”

Big contributors want something for their money. At its most benign, they want access, the ability to have their side heard whenever there is the possibility that legislation might affect their industry. Far less benignly, they want more — they want to know that their bidding will be done.

It can be subtle, this influence. “Maybe it’s the amendment that does not get introduced in committee because the congressman knows that it is not in sync with the desires of his money patrons,”

it can be not so subtle, too. “On any given Wednesday night in Washington,” says Nick Penniman, the executive director of Issue One, which is dedicated to reducing the influence of money in politics, “you’ll have a member of, say, the finance committee, standing in the board room of a lobbyist’s office, surrounded by bank lobbyists. At some point, someone will hand a staffer an envelope with the checks in it, and the congressman will have raised $100,000 in 45 minutes. And they know exactly who was responsible for putting it together, and whose phone calls therefore need to be returned.”

Penniman makes a distinction between “ideological givers” — donors like the Koch brothers, motivated by the chance to get like-minded people elected — and “transactional givers,” those who donate because they expect something concrete in return. “These are folks who give just as generously to both sides of the aisle.”

“Big money wins regardless of which party wins the election.”

There are two other reasons big money is corrosive to our politics.

One is that the need to raise money has become close to all-consuming.

“It’s a never-ending hustle. You get elected to this august body to fix problems, and for the privilege, you find yourself on the phone in a cubicle, dialing for dollars.”

the constant need to raise money means that “you don’t have the time for the kind of personal relationships that so many of us built up over time.” When people don’t know each other, it is a lot easier to think the worst of them. Polarization is the result.

Finally, there is the effect of big money on the rest of us. The public, Sarbanes believes, knows full well the insidious influence of money in politics. “The rational voter will say to himself, why should I bother voting if the person I’m voting for is a captive of special interests,

how does Ira Glasser react to these tales of corruption? He doesn’t deny them. “Of course there is corruption,” he says. “Of course there is undue influence of money.” But he doesn’t believe that those problems are as great as they are made out to be, or that they trump his First Amendment concerns. “The question is whether the remedy does more harm than good and violates the constitution,”