David B. Black (@DavidBBlack) header
David B. Black (@DavidBBlack) profile picture

Decades of writing code including ARPAnet, a compiler, early workflow and imaging, credit card software, and a couple decades of VC tech work.

New York metro
Joined March 2009
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David B. Black retweeted
My dear American friends, in my last post I gave you a snapshot of where France stands today. Now let me show you how we got here. I want you to see the whole movie before you buy the ticket. After the war, France was a machine. We called it the Trente Glorieuses, thirty glorious years. We built Concorde, the most beautiful aircraft ever made. We built a fleet of nuclear reactors in about fifteen years and gave ourselves some of the cleanest, cheapest electricity in the world. We built Ariane and put Europe in space. We built the TGV, the fastest train on earth. We invented the Minitel, an online network in millions of homes before most of you had heard of the internet. We were not a museum. We were builders. Then came 1981. François Mitterrand. Think of him as our Bernie Sanders, except he actually won. At his side, in the office next to his at the Élysée, sat a 37-year-old prodigy named Jacques Attali, his special adviser for the next ten years. The brightest minds of the left, convinced they could run an economy from a ministry. Here's what they did. They governed with Communist ministers. In 1982 they nationalized dozens of banks and the biggest industrial groups in the country: Paribas, Suez, Saint-Gobain, Thomson, Pechiney, Rhône-Poulenc. They lowered the retirement age to 60. They cut the work week to 39 hours and added a fifth week of paid vacation. They created a wealth tax. They hired massively into the public sector. Reality hit in less than two years. Capital fled, inflation ran wild, and the franc was devalued three times. In March 1983 Mitterrand had to slam on the brakes and impose austerity just to stay in the European monetary system. But here's the trick: the brakes never reversed anything. They just slowed the ratchet. The so-called right came back with Jacques Chirac, and nothing was undone. Under Chirac's presidency, France passed the 35-hour work week. Left or right, every government added one more program, one more rule, one more tax, and nobody ever took one away. At the same time, the political class did something even more destructive than bad economics. It turned the youth into a political instrument. Instead of teaching young people, including millions of children of immigrants, to love the country they lived in, it taught them a story of guilt and grievance: France as the oppressor, France as the thing to resent. You cannot integrate people into a country you've taught them to despise. We are living with the consequences of that narrative today, in our schools, our suburbs, our streets. Then forty years of slow decline, all the way to Macron. And the story has a perfect ending. In 2007, Jacques Attali chaired a commission on how to unleash French growth. Its deputy rapporteur was a young civil servant named Emmanuel Macron. The commission proposed more than 300 reforms to free the economy. Almost none were ever implemented. Even the men who built the system knew it wasn't working, and even they couldn't undo it. No balanced budget since 1974. Public spending around 57% of GDP. Debt above 3,300 billion euros. Growth stuck under 1%. Now the number that should keep you up at night. In 1995, GDP per person in France was about $27,000. In America, about $29,000. We were neck and neck. Today France is around $49,000. America is around $90,000. You are now nearly twice as rich per person as we are. What changed? Not our talent. Not our engineers. Not our schools of mathematics. The only thing that changed is that we went all in on socialism. The 35 hours, the endless regulation, the taxes that chase out anyone who builds, the belief that the state should do everything and the individual should ask permission for everything. There's a line people love to attribute to Einstein: insanity is doing the same thing over and over and expecting different results. We tried. For forty years, we tried. Every government promised that one more program, one more tax, one more regulation would finally fix things. You just saw where it got us. So if you choose the Democratic Party, which is literally turning socialist in front of your eyes, you will deserve what comes next. Let me tell you exactly what will happen if you go down that road. Nobody will vote for decline. Every single measure will sound generous, compassionate, reasonable. Your builders will slowly leave or stop building. Your state will grow every year and never shrink. Your debt will compound. And in thirty years, your kids will look at a chart like the one I just described and wonder when it all went wrong. You still have something we lost. You have Elon Musk sending rockets to orbit and landing them on their tail. You have Palmer Luckey building the defense industry of the future. You have Jeff Bezos, Jensen Huang, and thousands of founders nobody has heard of yet, building in garages right now. Trust your entrepreneurs. Don't trust your politicians. I come from your future. Don't make it yours.
I’m French. I want to talk to Americans who are about to vote Democrat. Not to insult you. To warn you. I come from your future. In France we did everything your progressive politicians promise. Free healthcare, free college, generous welfare, strong unions, heavy regulation, high taxes on the rich, a state that takes care of everything. Public spending close to 57% of GDP, one of the highest on the planet. On paper, it’s the dream. Here’s what it looks like from the inside. France hasn’t passed a balanced budget since 1974. Our debt is above 3,300 billion euros. Interest on that debt is becoming one of the biggest items in the national budget. Our hospitals are collapsing despite record funding. Our schools rank lower every year. Young people with degrees can’t afford an apartment in the city they were born in. Our best engineers leave for London, Zurich and San Francisco. And the rich you wanted to tax? They left too, and took the jobs with them. The promise was protection. The result is stagnation. The worst part is that nobody in France voted for decline. Every single step sounded generous, compassionate, reasonable. One more program. One more regulation. One more tax to fund it. Each step alone makes sense. Fifty years of them, and you wake up in a country that can no longer build a nuclear plant on time or keep its streets safe. I love America because it’s the one place on earth where people still believe they can build something from nothing. I came to Silicon Valley as a self-taught kid and it changed my life. That spirit is the most precious thing your country has. Before you vote, ask yourself one question: is the program you’re voting for making America more like America, or more like France? Trust me. You don’t want to be France.
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David B. Black retweeted
Bernie Sanders says the top 1% owns more than the bottom 93%, that fewer than a thousand billionaires got $2.2 trillion richer last year, and that it's "obscene." It's the most seductive and most wrong economic argument of our time. Let me explain why. First, wealth distribution follows a power law. Always. Everywhere. Books, music, startups, followers on X, goals in soccer. A small minority captures most of the value. That's not a bug of capitalism. It's the mathematical signature of every system where value gets created. So the only question that matters isn't "how big is the rich's slice?" It's "is the cake growing, and is the slice of the poorest growing with it?" And the answer is yes. In 1990, more than one human in three lived in extreme poverty. Today it's about one in ten. During exactly the period when billionaires multiplied. Bernie shows you the slice. He never shows you the cake. Second thing he won't tell you: past a certain level, wealth stops being consumption. It becomes capital allocation. Elon Musk isn't sleeping on a pile of cash. He owns stakes in Tesla, SpaceX, xAI. Jeff Bezos owns Amazon stock. That "$2.2 trillion" isn't sitting in a checking account. It's factories, rockets, data centers, millions of jobs. Nobody can eat $100 billion. You can only decide where to invest it. Once you understand that, the whole debate changes. The real question becomes: who allocates capital better? The people who built Amazon, SpaceX and Nvidia? Or politicians? A 5% wealth tax isn't "taking money from the rich." It's taking investment decisions away from people who proved they can create value and handing them to people who proved the opposite. Because the fundamental difference between an entrepreneur and a politician is consequences. The entrepreneur invests his own money. If he allocates badly, he loses everything. The market corrects him brutally, no appeal. That's why most startups die: the system kills bad decisions. The politician invests other people's money. If he allocates badly, nothing happens. Worse, he gets a bigger budget to "fix the problem." Milton Friedman put it better than anyone. There are four ways to spend money. Your money on yourself: you care about price and quality. Your money on others: you care about price. Others' money on yourself: you care about quality. Others' money on others: you care about nothing. Government is the fourth box. By design. Perfect example: California high-speed rail. Approved in 2008 for about $33 billion. Current estimated cost: over $100 billion. Passengers carried: zero. No entrepreneur would have survived that. The politicians who pushed it built careers on it. And when allocation has no consequences, it eventually finds a buyer. A politician who controls billions without accountability becomes the most profitable target in the world for anyone who wants to steer that money. The irony is that the left that rails against billionaires is itself funded by billionaires. George Soros is one of the biggest Democratic donors in history. The Gates Foundation shapes public health policy across the planet. Politicians don't fight billionaires. They pick their own. The ones who fund the state over the ones who compete with it. So if we actually want fewer poor people, we have to stop judging ideas by their intentions and start judging them by their results. And the results are brutally clear. China, 1978: Deng Xiaoping opens the economy to markets. More than 800 million people escape extreme poverty. The largest retreat of misery in human history. Not through redistribution. Through the freedom to build. India, 1991: liberalization. Same movie. South Korea and North Korea: same people, same language, same starting point in 1953. One became one of the most advanced economies on earth. The other has famines. Poland and Ukraine: comparable living standards in 1990. Today the average Pole is more than three times richer than the average Ukrainian. Argentina: a year and a half of liberalization, and the poverty rate falls from over 50% to around 30%. No country in history escaped poverty by punishing the people who build. Every single one did it by letting them build. And if you want to see what Bernie's program looks like in real life, you don't have to imagine it. It exists. It's called France. We've been running it for 45 years. Mass nationalizations in 1981. Two years later, Socialist president Mitterrand has to reverse course into austerity. Retirement at 60. The 35-hour workweek. A wealth tax for 35 years. Hundreds of wealthy households left every year for Belgium, Switzerland, London, taking their capital, their companies and their future taxes with them. Macron finally scrapped it in 2018. Hollande's 75% tax: raised a few hundred million, drove talent out, abandoned after two years. One of the highest tax burdens in the OECD. Public spending around 57% of GDP, a record in the developed world. Last balanced budget: 1974. Public debt: over €3.4 trillion. Mass unemployment for four decades. If taxing the rich and growing the state made people prosperous, France would be the richest country on the planet. It isn't. GDP per capita in France is barely more than half of America's. It's lower than Mississippi, the poorest state in the US. Not a single global tech giant. Our best engineers build Silicon Valley instead. I've been going back and forth between Paris and San Francisco for years. I see it every week. And California is about to replay the movie. Prop 40, on the ballot November 3rd, would take 5% of billionaires' net worth. Even Gavin Newsom, a Democratic governor, opposes it. The state's own nonpartisan budget analyst warns that income tax revenue could drop every year if the wealthy leave. Larry Page, Sergey Brin and Peter Thiel have reportedly already started moving their assets out. You don't fight poverty by shrinking the top. You fight it by growing the cake. Bernie wants a society where nobody has too much. I want a society where nobody has too little. The first has been tried everywhere and produces equality in stagnation. The second lifted a billion people out of misery. Choose.
The top 1% owns more wealth than the bottom 93%. 1 man owns more wealth than the bottom 53% of households. Less than a thousand billionaires got $2.2 trillion richer in the last year. Obscene. Yes. We need a 5% billionaire wealth tax in California and throughout America.
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David B. Black retweeted
Standard American fat intake, 1900. Per person, per year. Butter: 18 pounds Lard: 12 pounds Beef tallow: 8 pounds Seed oils: 0 pounds That is thirty-eight pounds of animal fat per person per year, and a round zero of the stuff extracted from seeds using hexane solvent in an industrial plant, for the simple reason that the industrial plant had not been built yet. Disease rates at the time, in the same population, on that diet: Obesity: about 1.2% Diabetes: under 0.5% Heart disease: so rare before seventy that cardiology did not yet exist as a medical speciality Standard American fat intake, 2026. Per person, per year. Butter: 4 pounds Lard: under 1 pound Beef tallow: essentially none Seed oils: 80+ pounds That is about five pounds of animal fat a year against eighty pounds of something your great-grandmother would not have recognised as food. Disease rates in the same population, on the new diet: Obesity: 42% Diabetes: 11.6% Heart disease: the leading cause of death in the country And the official position, held by the dietary guidelines, the heart associations, and almost every doctor under fifty, is that the problem is the four pounds of butter. Not the eighty pounds of industrial seed oil that did not exist before 1911 and now makes up roughly a fifth of the total calories in the average American diet. The four pounds. That's the one. The thing that has fallen by seventy-seven per cent is somehow driving the diseases that have risen in lockstep with its decline. The thing that has gone from zero to eighty pounds is innocent, because it says "heart healthy" on the bottle. This is not how causation works. This is not how anything works. A twelve-year-old with a pencil and a sheet of paper could look at those two columns and identify the variable that changed. The grandmother with the crock of bacon grease on the windowsill could have told you, without any data at all, which of those two fats was the food and which one was the lubricant. She would have laughed at the question. She would have cooked your breakfast in the correct one and served it to you hot. She is no longer here to ask. Her grandchildren are pouring her grease down the sink and buying the lubricant in a plastic bottle, and wondering, very sincerely, why they feel unwell.
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David B. Black retweeted
In the 1960s, Ancel Keys needed to prove dietary fat caused heart disease. He had data from 22 countries. He cherry-picked 7 countries that fit his hypothesis. Ignored 15 that didn't. Published the "Seven Countries Study." This became the foundation of: - Every dietary guideline since 1977 - The demonisation of saturated fat - The recommendation of seed oils - The cholesterol hypothesis - 50 years of nutritional policy Based on fraud. Still taught in medical schools as fact. Still used to justify statins for healthy people. The biggest nutritional scandal in human history and nobody's been held accountable.
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David B. Black retweeted
These are the words of the first 16 scientists of 46 that have left the Intergovernmental Panel on Climate Change (IPCC) due to the corruption of science within the organisation. Dr Robert Balling: The IPCC notes that “No significant acceleration in the rate of sea level rise during the 20th century has been detected.” This did not appear in the IPCC Summary for Policymakers. Dr Lucka Bogataj: “Rising levels of airborne carbon dioxide don’t cause global temperatures to rise…. temperature changed first and some 700 years later a change in aerial content of carbon dioxide followed.” Dr John Christy: “Little known to the public is the fact that most of the scientists involved with the IPCC do not agree that global warming is occurring. Its findings have been consistently misrepresented and/or politicized with each succeeding report.” Dr Rosa Compagnucci: “Humans have only contributed a few tenths of a degree to warming on Earth. Solar activity is a key driver of climate.” Dr Richard Courtney: “The empirical evidence strongly indicates that the anthropogenic global warming hypothesis is wrong.” Dr Judith Curry: “I’m not going to just spout off and endorse the IPCC because I don’t have confidence in the process.” Dr Robert Davis: “Global temperatures have not been changing as state of the art climate models predicted they would. Not a single mention of satellite temperature observations appears in the IPCC Summary for Policymakers.” Dr Willem de Lange: “In 1996 the IPCC listed me as one of approximately 3000 “scientists” who agreed that there was a discernible human influence on climate. I didn’t. There is no evidence to support the hypothesis that runaway catastrophic climate change is due to human activities.” Dr Chris de Freitas: “Government decision-makers should have heard by now that the basis for the long-standing claim that carbon dioxide is a major driver of global climate is being questioned; along with it the hitherto assumed need for costly measures to restrict carbon dioxide emissions. If they have not heard, it is because of the din of global warming hysteria that relies on the logical fallacy of ‘argument from ignorance’ and predictions of computer models.” Dr Oliver Frauenfeld: “Much more progress is necessary regarding our current understanding of climate and our abilities to model it.” Dr Peter Dietze: “Using a flawed eddy diffusion model, the IPCC has grossly underestimated the future oceanic carbon dioxide uptake.” Dr John Everett: “It is time for a reality check. The oceans and coastal zones have been far warmer and colder than is projected in the present scenarios of climate change. I have reviewed the IPCC and more recent scientific literature and believe that there is not a problem with increased acidification, even up to the unlikely levels in the most-used IPCC scenarios.” Dr Eigil Friis-Christensen: “The IPCC refused to consider the sun’s effect on the Earth’s climate as a topic worthy of investigation. The IPCC conceived its task only as investigating potential human causes of climate change.” Dr Lee Gerhard: “I never fully accepted or denied the anthropogenic global warming concept until the furore started after NASA’s James Hansen’s wild claims in the late 1980s. I went to the [scientific] literature to study the basis of the claim, starting with first principles. My studies then led me to believe that the claims were false.” Dr Indur Goklany: “Climate change is unlikely to be the world’s most important environmental problem of the 21st century. There is no signal in the mortality data to indicate increases in the overall frequencies or severities of extreme weather events, despite large increases in the population at risk.” Dr Vincent Gray: “The [IPCC] climate change statement is an orchestrated litany of lies.”
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The fraud that is broad and deep in Minnesota demonstrates that new regulations won’t assure election integrity. You can require paper ballots, voter ID, hand counting, whatever. If the local people who do the work ignore the rules, the results will be whatever the crooks want them to be. Minnesota’s Feeding our Future and childless day care centers will morph into landslide-producing machines regardless of what voters think they’re doing. Regulations, like laws, are useless unless they’re enforced. It’s much like gun control regulation – the places with the strictest gun control regulations – deep-blue cities – are the ones with the highest rates of gun violence, the vast majority of it committed by … surprise, surprise … people who ignore the regulations. And are rarely punished for doing so. What can be done? While the usual formulas like voter ID and paper ballots sound nice, they are helpless against the power of local “Voting our Future” results-generating machines. The only thing that will work is totally removing local voting from local control. For more, including solutions, see blackliszt.com/category/voti…
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Super-top software programmers are frequently criticized by colleagues and managers for not being team players, etc. There's another side to the story. blackliszt.com/2025/07/whats…
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Generative AI is the thing. It's amazing! People are even turning to AI tools like Chatgpt for medical advice -- even a growing number of doctors! Can you get valuable health advice from a generative AI tool like ChatGpt? I ran some experiments, I got answers. They're not good. See this: lnkd.in/erXwUPiG
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Voter ID and paper ballots are a great start. But they're not nearly enough to prevent cheating! How about we join most other civilized countries -- even France :-) -- and toss the machines and go to hand-counting the ballots. #VotingPlatform #voterID #paperballots blackliszt.com/2025/03/voter…
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A form of AI can automate medical diagnosis. I talk about the obstacles and the path to success. Most important, I'm concerned that automation will further cement harmful medical practices that are currently standard. Automation should not happen until this is resolved. See blackliszt.com/2025/02/can-a…
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Wellness visits and disease prevention sound like terrific ideas. They are widely practiced. In fact, they are a major driver of the explosion of healthcare costs in recent decades -- even as health and longevity have been declining. Something's going on here. Understanding the spectrum of medical services is key to understanding. See blackliszt.com/2025/01/medic…
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@SenatorWyden and many experts proclaim that a lack of MFA enabled the hack that led to the huge security breach at United Healthcare. Imposing MFA will NOT fix the problem. There are solutions, but all the experts ignore them, even thought they're proven in practice, for example by Tiffany jewelry store. See this blackliszt.com/2024/12/mfa-w…
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