The Zodiac’s Cipher, China’s Strength & Social Media

There’s a new theory from an amateur code-breaker, Alex Barber, that links two of America’s most infamous unsolved cases: the 1947 mutilation murder of Elizabeth Short (known as the Black Dahlia) and the late-1960s killings by the Zodiac Killer.

Baber, a 50-year-old self-taught investigator from West Virginia with autism and no formal education beyond high school, claims both crimes were committed by the same person: Marvin Margolis (who later used the alias Marvin Merrill until his death in 1993). Baber says he cracked the Zodiac’s unsolved 13-symbol cipher (Z13) using AI-assisted methods, revealing the name “Marvin Merrill.” He connects this to the Black Dahlia case through circumstantial links, including:

Margolis’s brief living arrangement with Short shortly before her murder.
His Navy medical training explaining the surgical precision in her dismemberment.
A 1992 sketch by Margolis titled “Elizabeth” depicting a mutilated woman with the word “ZODIAC” hidden in the shading.
The possible murder site near a Compton motel called the Zodiac Motel, which Baber suggests inspired the killer’s later moniker.

Retired LAPD detectives (Rick Jackson and Mitzi Roberts) and former NSA codebreakers (Ed Giorgio and Patrick Henry) praise Baber’s work as compelling and “overwhelming” circumstantial evidence, with low probability of coincidence.

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The 2018 US semiconductor embargo against China changed the world. The age of cooperation and globalization was over.

With the 2018 embargo, the US essentially punched China on the nose. At the time, China had little choice but to take the punch. Take the punch and prepare its own economy for a future in which it would be less vulnerable to further US embargoes.

For seven long years China went on a diet, and went to the CrossFit gym. And as all of China’s savings were captured—through tighter capital controls, the suspension of IPOs, and the concentration of bank lending—and redirected towards China’s industrial supply chains, returns for investors were dreadful.

When Donald Trump came back to power in 2025, China, which had spent the past seven years getting toned, showed up and essentially said: “Gloves off. If you want a fight, let’s go. You tariff me, then I will tariff you. You embargo me, then I will embargo you.

China’s response was to de-Westernize its supply chain, at great cost to its investor base, to economic growth, to domestic consumption and even to its birth rate.

Meanwhile, over the same period, the US did absolutely nothing to de-Sinify its own supply chain. While China hit the gym, the US partied. And partied hard: US budget deficits expanded, but pretty much just funded expansions in social benefits—social security, Medicare and Medicaid. Between 2018 and 2025, US government debt increased from $21 trillion to $38 trillion. However, none of the US $17 trillion in debt went into building new Hoover dams, new Tennessee Valley Authorities, new interstate highways or new railroads.

China’s push to de-Westernize its supply chains came at great cost to the Chinese economy and Chinese society. Would US policymakers countenance such judicial repression?

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Readers used to outnumber non-readers 2 to 1. Now non-readers outnumber readers 3 to 1.

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One third of 8th grade girls spend 7+ hours per day on social media. Meaning: that’s pretty much all they do.

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The frustrating truth is that we don’t really know for sure what the digital empire of short-form video is doing to our minds. But a systematic review of 71 studies with 98,000 participants published in 2025 reached an alarming finding. Across the dozens of studies, heavy short-form video users showed moderate deficits in attention, inhibitory control, and memory.

Several studies in the meta-analysis reported structural and functional differences in the prefrontal cortex and reward circuits among high-frequency users, while others found cognitive flexibility reductions and altered dopaminergic reward responses. None of this proves causation. But taken together, they suggest a plausible mechanism: a daily diet of hyper-rewarding, rapid-fire stimuli may gradually reshape attention and regulatory systems in ways that weaken our attentional control.

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The probability of men getting married increases with their income.

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The share of people between 20 and 24 who are not in a job, or seeking work, or in school, or raising a child has nearly doubled in the last quarter-century in both the UK and the U.S.

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A list of small things you can do, that compound positively over time, from Kevin Dahlstrom (founder of Bolt.health) who just turned 55 and said he feels much healthier now than he did 10+ years ago:

Walk 15+ miles a week, even if you do other exercise.
Eat real food. Not too much.
Stop drinking alcohol, even in moderation.
Explore minimalism (it’s not what you think it is).
Get 8 hours of quality sleep each night.
Invest in experiences, not things.
Stay lean. Men in particular are obsessed with muscle mass these days, but bulk doesn’t age well. The goal is to be strong but lean. The fittest guys in their 50s and beyond aren’t meatheads, they’re lean guys who are serious about a sport.
Stop drinking sodas and sugary energy drinks.
Show up on time, every time. Poor time management limits success more than most people realize.
Find a hobby and pursue mastery. You can’t have a happy life without a passionate pursuit that isn’t your vocation. Your work—even if you enjoy it—isn’t enough.
Try psychedelics. It’s one of those things everyone should do at least once, and it might be the breakthrough you’ve been looking for.
Be a lifelong learner. Your brain is just like a muscle—if you don’t feed and flex it regularly, it will atrophy.
Find your purpose. People with a strong sense of purpose are happier and live longer. Lack of purpose sucks energy and magnifies depression.
Only take advice from people who embody the traits you want to have. Talk is cheap—emulate those who have done it.
The goal is not to retire and do nothing, it’s to build a great day-to-day life that you don’t need to escape. A life of leisure is a slow death.
Have fun! Do frivolous and silly things that make you smile.
Accumulate assets—things that grow in value over time. It’s the #1 habit of rich people, and it can be done in tiny chunks. It becomes addictive (in a good way).
Make your own decisions. We live in an era where most of what society tells us is wrong. Don’t be afraid to break from societal norms.
Go all in on family. Get married, stay married, have kids. Burn the boats. In the end, family is all that matters.
Be ruthless with your time. Money comes and goes. Time only goes. Audit your calendar ruthlessly—cut the trivial, double down on the meaningful, and spend your hours like your life depends on it.

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Stocks are still the most expensive in the United States, by far, but the rest of the world also became more expensive this year after an enormous rise in global stock prices almost everywhere.

Hedonic Adaption, Gold & The Dungeon Of Insularity

“I love the challenge … it’s one of the greatest joys of my life, but does it fill the deepest wants and desires of my heart? Absolutely not.”

That was the killer quote from a recent interview with the world’s number one golfer, Scottie Scheffler, that went viral this week. And I think this one went viral for a reason: It taps into a universal truth or two about humanity that we know at a subconscious level, but that rarely shines through the manic malaise of our achievement-oriented culture.

“It feels like you work your whole life to celebrate winning a tournament for a few minutes – it only lasts a few minutes, that euphoric feeling,” Sheffler further explained. “You win it, you celebrate, get to hug my family, my sister’s there, it’s such an amazing moment. Then it’s like, ‘OK, what are we going to eat for dinner?’ You know, life goes on.”

While his language is a touch more approachable, Sheffler is practically quoting ancient wisdom literature attributed to the world’s then (in the 10^th century, BC) number one, King Solomon, in Ecclesiastes: “Then I considered all that my hands had done… and behold, all was vanity and a striving after wind, and there was nothing to be gained under the sun.”

That fading feeling is explained in the field of behavioral economics through the term “hedonic adaptation.” This theory notes that we, as humans, can marshal an enormous amount of energy to achieve certain goals, only to experience a pretty rapid dilution of the intensity felt in peak moments.

The other upside of hedonic adaptation is that it doesn’t just apply to the good and great things we experience, but also to the bad and even horrible. Yes, humans are designed to bounce back pretty quickly, and that, too, is explained by hedonic adaptation.

So, if being the very best in the world at something doesn’t provide lasting satisfaction, what does?

“Every day when I wake up early to go put in the work, my wife thanks me for going out and working so hard. When I get home, I try and thank her every day for taking care of our son.… I’d much rather be a great father than I would be a great golfer. At the end of the day, that’s what’s more important to me.”

Arthur Brooks may summarize it best: “Money, power, pleasure, and fame won’t make you happy. Faith, family, friends, and meaningful work will.”

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Between 2003 and 2024, the amount of time that Americans spent attending or hosting a social event declined by 50 percent. Almost every age group cut their party time in half in the last two decades. For young people, the decline was even worse. Last year, Americans aged 15-to-24 spent 70 percent less time attending or hosting parties than they did in 2003.

As late as the 1970s, the average US household entertained friends at home about 15 times a year and went out to a friend’s place about every other week. After the 1970s, Americans pulled back from just about every form of socializing. By the late 1990s, the share of Americans who said they visited the homes of friends in the previous week had declined by more than 40 percent.

Women have long been the keepers of the family social calendar. Wives, not husbands, historically planned the quilting parties, the bridge games, and the neighborhood potlucks. But in the second half of the 20th century, many women swapped unpaid family jobs for salaried positions. In 1970, right around the inflection point of America’s social decline, the share of women between 25 and 54 who participated in the labor force surged past 50 percent for the first time; it’s currently near 80 percent. As more women poured their weekdays into 9-to-5 work, men failed to take over the logistical labor required to fill out the social calendar, and adult gatherings gradually eroded in the age of the dual-earner household.

Meanwhile, parenting norms have changed. Americans used to have more kids whom they watched less; now they have fewer children whom they watch more. Between 1975 and 1998, they found, mothers increased the amount of time they spent with their kids by about 200 minutes a week. For married fathers, the increase was even more dramatic—about 240 minutes per week. Parents are more anxious than they used to be, not only about neighborhood crime and playground accidents, but also about their children’s achievements.

It’s impossible to host a cocktail party when your second job is to be your son and daughter’s part-time limo driver who escorts them to 13 weekend extracurricular activities (that you kind of forced them to do, in the first place).

Then, there are the screens. The television landed in the US living room in the middle of the 20th century like an asteroid from deep space, displacing settled habits and sending ripples through the social fabric. Between 1965 and 1995, the typical American’s leisure time grew by about 300 hours a year, but we seem to have spent almost all those hours watching more TV. By the 1980s, people who said that television was their “primary form of entertainment” were less likely to engage in practically every other form of social interaction.

I don’t like the simplistic idea that smartphones are purely anti-social. Digital technology has not obliterated our social connections but rather warped them. Many of us spend hours every week with our favorite TikTok stars, YouTube gurus, Instagram influencers, Twitter gadflies, podcast buddies, Reddit friends, and other people we kind of know and sort of care about, even though they might not even know we exist, at all. Keeping up with these people—watching them, listening to them, giving ourselves over to them—necessarily requires pulling our focus out of the world of flesh and blood. To be a citizen of the Internet is to spend hundreds of hours inside the minds of virtual people we couldn’t party with, even if we desperately wanted to.

Finally, while one needn’t be drunk to have a good time with others, I cannot ignore the fact that the great American party deficit has coincided with an extraordinary decline in teen drinking. Last year was the first on record, going back to 1975, that fewer than 50 percent of high school seniors said they’d ever had a drink of alcohol.

Like the rise of the dual-earner household, the turn against alcohol among the same young people whose socialization has plunged is a complicated phenomenon that defies easy good-bad categorization. I cannot deny that abstinence is good for young people’s livers; but I worry that it’s part of a larger set of behaviors that’s bad for their hearts.

We’ve built ourselves a world of greater professional ambition, more intensive parenting, and lavish entertainment abundance. But in making this world, we’ve lost a bit of each other. If summoning these magnificent technologies incurs the death of our social lives, a permanent surge of anxiety, and the long-term demise of deep friendships, then we’ll have built ourselves a glittering dungeon of insularity and called it progress.

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What if gold goes the way of diamonds? The supply of gold is limited – limited by miners’ ability to dig it out of the ground and process it, what happens if a new supply of gold comes online? Not a new mine, but actual alchemy. A company researching fusion energy, Marathon Fusion, believes that it could produce gold alongside energy:

Marathon’s proposal is to also introduce a mercury isotope, mercury-198, into the breeding blanket and use the high-energy neutrons to turn it into mercury-197. Mercury-197 is an unstable isotope that then decays over about 64 hours into gold-197, the only stable isotope of the metal.

While the science needs to be confirmed, it seems not out of the realm of possibility. If so, it has big implications for fusion energy AND the gold market itself.

Another industry is already facing pressure from an ‘artificial’ competitor: Diamonds can now be made in labs that mimic the earth’s extreme pressure and temperatures, but for a fraction of the price. A decade ago, such man-made gems were novel. Today they are mainstream, and increasingly challenging the perception of diamonds as a luxury accessory.

This is bad news for the ‘natural’ diamond industry, which is facing incredible pricing pressure. The industry’s response seems to be to double down on the natural aspects of traditional diamonds and hope that they can at least hold the high end of the market.

Nobody knows if large scale production of gold will eventually come online. Even if it does, it is years, if not decades, into the future. The point here is to think through the hypothetical impact of an abundant gold supply. For example, would gold still a be a store of value if it’s supply were dramatically increased? Would we find new and novel uses for a now abundant shiny metal?

If you were involved in the diamond business in 2016, and knew how the market for manufactured diamonds would mature over the next decade, you may have done things very differently.

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There’s been a lot of discussion lately about rising graduate unemployment. If you dig a little closer a striking story emerges: Unemployment is climbing among young graduate “men,” but college-educated young women are generally doing okay.

College, Cancer & Wages

The share of elite MBA grads still looking for work 3+ months after graduation is up sharply at practically every high-ranking school. The traditional elite-MBA absorption process—1) Get degree; 2) Glide path to Big Tech/Consulting—seems disrupted.

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Gen Z is the most money-centric generation we’ve seen yet.

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The face of cancer in the U.S. is getting younger—and more feminine. Cancer rates for women in the U.S. have risen over the past half-century, particularly among women under age 65 diagnosed with breast cancer. For decades, the cancer burden in the U.S. was higher for men, who started smoking en masse in the 20th century. Their rates of lung-cancer cases and deaths soared. Lung cancer remains the biggest cancer killer for men in the U.S., but case and death rates have dropped, after smoking rates declined.

Women started smoking heavily later than men and have been slower to quit, so their lung-cancer decline started later and hasn’t been as steep. That has had a significant impact: Lung cancer incidence among women under 65 was greater than among men for the first time in 2021. Women are also more likely to get diagnosed with lung cancer as nonsmokers.

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We rank nine major U.S. airlines on seven equally weighted operations metrics: on-time arrivals, flight cancellations, delays of 45 minutes or more, baggage handling, tarmac delays, involuntary bumping and what the Transportation Department calls passenger submissions (which are mostly complaints).

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Parlays, the tough-to-win multipart wagers with tantalizing payouts, are bringing in casual and newbie gamblers, and betting companies are making a killing. FanDuel said 90% of its same-game parlays, or bets on multiple developments within one event, have a wager of $30 or less, while 60% are $5 or less. About 20% of all money spent by DraftKings on national TV advertising last year hyped parlays, compared with 11% in 2022.

Parlays accounted for about 27% of the money wagered on all sports bets last year through October in Illinois, New Jersey and Colorado, states in which gambling regulators report data by bet type. That’s up from 22% of all sports bets in 2021. The multi-leg bets delivered about 56% of sports-betting revenue after payouts for companies in the three states during that period, up from 50% in the same stretch of 2021.

Multi-leg bets are so lucrative that FanDuel parent company Flutter Entertainment recently increased its expectation for total online gambling revenues in the U.S. to $63 billion by 2030, up from its estimate of $40 billion two years ago, driven in part by parlays, the company said.

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People are usually surprised when they see how Japan has grown its dividends at a 6.9% annual clip over the last 20 years, outpacing the 6.7% growth pace of the S&P 500. Japan trades for 13.5x forward earnings, or a 37% discount to the S&P’s P/E of 21.3.

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A massive wage arbitrage has opened between the US and its competitors. The overwhelming majority of people in the US have no idea just how much more money they make than the Japanese, French, British, etc.