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Socially, cryptocurrency is a coordination game; people want to have the coin that other people want to have, and some sort of abstract technical equivalence doesn’t make one cryptocurrency a good substitute for another. Social acceptance—legitimacy—is what makes a cryptocurrency valuable, and you can’t just copy the code for that.

A thing that worked exactly like Bitcoin but didn’t have Bitcoin’s lineage—didn’t descend from Satoshi’s genesis block and was just made up by some copycat—would have the same technology but none of the value.

Here’s another generalization of Bitcoin: Satoshi made up an arbitrary token that trades electronically for some price. The price turns out to be high and volatile. The price of an arbitrary token is … arbitrary?

it’s very interesting as a matter of finance theory. Modern portfolio theory demonstrates that adding an uncorrelated asset to a portfolio can improve returns and reduce risk.

To the extent that the price of Bitcoin 1) mostly goes up, though with lots of ups and downs along the way, and 2) goes up and down for reasons that are arbitrary and mysterious and not tied to, like, corporate earnings or the global economy, then Bitcoin is interesting to institutional investors.

In practice, it turns out that the price of Bitcoin is pretty correlated with the stock market, especially tech stocks

Bitcoin hasn’t been a particularly effective inflation hedge: Its price rose during years when US inflation was low, and it’s fallen this year as inflation has increased.

The right model of crypto prices might be that they go up during broad speculative bubbles when stock prices go up, and then they go down when those bubbles pop. That’s not a particularly appealing story for investors looking to diversify.

one important possibility is that the first generalization of Bitcoin, that an arbitrary tradeable electronic token can become valuable just because people want it to, permanently broke everyone’s brains about all of finance.

Before the rise of Bitcoin, the conventional thing to say about a share of stock was that its price represented the market’s expectation of the present value of the future cash flows of the business.

But Bitcoin has no cash flows; its price represents what people are willing to pay for it. Still, it has a high and fluctuating market price; people have gotten rich buying Bitcoin. So people copied that model, and the creation of and speculation on pure, abstract, scarce electronic tokens became a big business.

Climate change isn’t the only problem. Cocoa crops in Côte d’Ivoire and Ghana, where 60 percent of the world’s cocoa come from, may already be in “structural decline,” Debenham said, citing disease, aging cocoa trees, and illegal gold mining on farmland.

ore important, the farmers who tend to the crops can’t afford to invest in their farms to increase their yields and bolster resilience against climate change. The bleak outlook for cocoa farmers threatens to doom cocoa-growing in the region altogether. In Ghana, the average cocoa farmer is close to 50 years old. A new generation of farmers is needed to maintain the cocoa supply, but young people may just walk away from the industry.

Newer chocolate alternatives may provide more satisfying counterfeits. Win-Win isn’t the only start-up producing cocoa-free chocolate, which is similar in concept to animal-free meat. The company uses plant ingredients to emulate the flavor and texture of chocolate—as do its competitors Foreverland and Voyage Foods. Another firm, California Cultured, grows actual cacao cells in giant steel tanks.

Cocoa shortages will affect all kinds of chocolate, but mass-produced sweets may change beyond just the prices. The erratic temperatures brought about by climate change could change the flavor of beans, depending on where they are grown

Variability is a concern for commercial chocolate makers, who need to maintain consistent flavors across their products. They may counteract discrepancies among different batches of beans by combining them, then roasting them at a higher temperature,

Commercial chocolate makers may also tweak their recipes to amp up or mimic chocolate flavors without using more cocoa. These candies contain relatively little cacao to begin with; only 10 percent of a product’s weight must be cocoa in order to qualify as chocolate in the eyes of the FDA.

No matter how you look at it, the future of cocoa doesn’t look good. With less cocoa available all around, chocolate may become more expensive. For high-end chocolate brands, whose products use lots of cocoa, the recent price hikes are reportedly an existential threat.

So much of the appeal of cheap chocolate is that it’s always been there—whether in the form of a Hershey’s Kiss, Oreo cookies, a bowl of Cocoa Puffs, or the shell of a fondant-filled egg. “You grow up with those tastes. It’s hard to fathom how pervasive it has been,” Carodenuto said. Chocolate lovers have weathered minor tweaks to these candies over the years, but the shifts happening today may be less tolerable—or at the very least more noticeable. The change that has been hardest to ignore is that cheap chocolate is no longer that cheap.

A glimmer of hope for Biden emerged toward the end of the survey: “If Donald Trump is found guilty and convicted this year of a felony — with Donald Trump as the Republican candidate and Joe Biden as the Democratic candidate — for whom would you vote?”In this hypothetical circumstance, Biden pulls ahead of Trump, 45-43.

when asked, “How willing would you be to vote for Donald Trump if he is convicted of a crime?” 53 percent of registered voters surveyed said they would be “unwilling” to do so; 46 percent said “very unwilling”; and 7 percent said “somewhat unwilling.”

Bloomberg-Morning Consult asked respondents whether they would be unwilling to vote for Trump if he were “sentenced to prison”: 55 percent said unwilling, 48 percent very unwilling and 7 percent said somewhat unwilling.

YouGov found that 45 percent of respondents were either unaware of or uncertain that Trump had “been charged with falsifying business records to conceal hush money payments to Stormy Daniels, a porn star” and that Trump “had been found liable for sexually assaulting and defaming writer E. Jean Carroll.”

The most recent NBC News poll, conducted at the end of January, has Trump favored over Biden by a substantial 47 percent to 42 percent.

In the RealClearPolitics compilation of polls that add Robert Kennedy Jr., Cornel West and Jill Stein to the mix, Trump’s lead over Biden more than doubles, to 4.8 points, 41.6 to 36.8 percent. Kennedy gets 13 percent, and West and Stein each get 2.1 percent.

Along with the threat posed by third-party candidates, two major crises — immigration and the Israeli assault on Hamas in Gaza — have become significant liabilities for the Biden campaign.

The Dec. 10-14 New York Times/Siena poll found that young voters, aged 18 to 29, favored Trump over Biden 49-43. These voters said they trusted Trump over Biden “to do a better job on the Israeli-Palestinian conflict” 49-30. In the 2020 election, Biden beat Trump among 18-to-29-year-old voters by 24 points, 60-36, according to exit polls, by far his biggest margin in all age groups.

“To win in 2024, Biden will need to convince voters that he is still the proud moderate they voted for in 2020,” Cowan wrote by email. “He has a lot of evidence on his side, but he still has a lot of convincing to do.”

Biden’s showing “middle- and working-class voters that he understands their values and takes seriously their concerns around crime, immigration and the economy — which, as polling makes clear, are often dramatically different and far more mainstream and centrist than those of college-educated elites who staff much of Washington — is the only way to win.”

While bitterly criticized by many liberals, the Supreme Court decision last year to ban affirmative action in public and private colleges will in fact reduce the salience of an issue that has historically worked to build support for Republicans.

A closer look, however, would have revealed that individual journalists at BNN published lengthy stories as often as multiple times a minute, writing in generic prose familiar to anyone who has tinkered with the A.I. chatbot ChatGPT.

How easily the site and its mistakes entered the ecosystem for legitimate news highlights a growing concern: A.I.-generated content is upending, and often poisoning, the online information supply.

The websites, which seem to operate with little to no human supervision, often have generic names — such as iBusiness Day and Ireland Top News — that are modeled after actual news outlets. They crank out material in more than a dozen languages, much of which is not clearly disclosed as being artificially generated, but could easily be mistaken as being created by human writers.

Now, experts say, A.I. could turbocharge the threat, easily ripping off the work of journalists and enabling error-ridden counterfeits to circulate even more widely — as has already happened with travel guidebooks, celebrity biographies and obituaries.

The result is a machine-powered ouroboros that could squeeze out sustainable, trustworthy journalism. Even though A.I.-generated stories are often poorly constructed, they can still outrank their source material on search engines and social platforms, which often use A.I. to help position content. The artificially elevated stories can then divert advertising spending, which is increasingly assigned by automated auctions without human oversight.

NewsGuard, a company that monitors online misinformation, identified more than 800 websites that use A.I. to produce unreliable news content.

Low-paid freelancers and algorithms have churned out much of the faux-news content, prizing speed and volume over accuracy.

Former employees said they thought they were joining a legitimate news operation; one had mistaken it for BNN Bloomberg, a Canadian business news channel. BNN’s website insisted that “accuracy is nonnegotiable” and that “every piece of information underwent rigorous checks, ensuring our news remains an undeniable source of truth.”

this was not a traditional journalism outlet. While the journalists could occasionally report and write original articles, they were asked to primarily use a generative A.I. tool to compose stories, said Ms. Chakraborty and Hemin Bakir, a journalist based in Iraq who worked for BNN for almost a year. They said they had uploaded articles from other news outlets to the generative A.I. tool to create paraphrased versions for BNN to publish.

Mr. Chahal’s evangelism carried weight with his employees because of his wealth and seemingly impressive track record, they said. Born in India and raised in Northern California, Mr. Chahal made millions in the online advertising business in the early 2000s and wrote a how-to book about his rags-to-riches story that landed him an interview with Oprah Winfrey.

Mr. Chahal told Mr. Bakir to focus on checking stories that had a significant number of readers, such as those republished by MSN.com.Employees did not want their bylines on stories generated purely by A.I., but Mr. Chahal insisted on this. Soon, the tool randomly assigned their names to stories.

This crossed a line for some BNN employees, according to screenshots of WhatsApp conversations reviewed by The Times, in which they told Mr. Chahal that they were receiving complaints about stories they didn’t realize had been published under their names.

According to three journalists who worked at BNN and screenshots of WhatsApp conversations reviewed by The Times, Mr. Chahal regularly directed profanities at employees and called them idiots and morons. When employees said purely A.I.-generated news, such as the Fanning story, should be published under the generic “BNN Newsroom” byline, Mr. Chahal was dismissive.“When I do this, I won’t have a need for any of you,” he wrote on WhatsApp.Mr. Bakir replied to Mr. Chahal that assigning journalists’ bylines to A.I.-generated stories was putting their integrity and careers in “jeopardy.”

This was a strategy that Mr. Chahal favored, according to former BNN employees. He used his news service to exercise grudges, publishing slanted stories about a politician from San Francisco he disliked, Wikipedia after it published a negative entry about BNN Breaking and Elon Musk after accounts belonging to Mr. Chahal, his wife and his companies were suspended o

The increasing popularity of programmatic advertising — which uses algorithms to automatically place ads across the internet — allows A.I.-powered news sites to generate revenue by mass-producing low-quality clickbait content

Experts are nervous about how A.I.-fueled news could overwhelm accurate reporting with a deluge of junk content distorted by machine-powered repetition. A particular worry is that A.I. aggregators could chip away even further at the viability of local journalism, siphoning away its revenue and damaging its credibility by contaminating the information ecosystem.