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Software engineer and educator; creator of Testing Library and of the EpicWeb.dev and EpicReact.dev courses.

• In Kody, you can have skills, but even better is documented utilities. It's basically a skill + a tool. Resulting in a much more reliable and repeatable outcome. Here's the code that lives in Kody and it's what agents get when they search for "merge a pull request"

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Director of institutional asset management at Ritholtz Wealth Management. Writes the A Wealth of Common Sense blog and co-hosts the Animal Spirits podcast with Michael Batnick.

• Long-term Treasuries now have a negative total return going back to the start of 2015 It's more than a lost decade for long bonds (and even worse after inflation)

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• This year: Mortgage rates have gone from 6% to 7% 10 year Treasury yields: 4% to 5%. Inflation: 2.4% to 3.4%. Oil prices from less than $60/barrel in Jan to >$100/barrel And the stock market is up double digits but valuations are falling Why?

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Co-founder, chairman and chief investment officer of Ritholtz Wealth Management. Hosts the Masters in Business podcast for Bloomberg and wrote How NOT to Invest.

• 10 Friday AM Reads

  My back in NY morning reads: ​• Why Are Valuations Falling in a Bull Market?: Ben Carlson runs the year’s tape — mortgages from 6% to 7%, the 10-year from 4% to 5%, inflation from 2.4% to 3.4%, oil from under $60 to ove…

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Co-founder of Y Combinator and Viaweb; essayist at paulgraham.com.

• In the 1950s, an aluminum company commissioned Vacheron & Constantin to make them some aluminum pocket watches. The case, dial, hands, numerals, and even the plates in the movement are aluminum. The resulting watch is 44 mm in diameter but weighs only 22 g.

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Writes Don't Worry About the Vase, a near-daily account of what is happening in AI and what they think it means. Former Magic: the Gathering pro and trader; unusually willing to put a number on a belief and to grade their own past calls.

• AI #186: The World Takes Notice

  In the wake of Jacob Coxon’s resignation, and the resulting preference cascade, things have escalated quickly.

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Co-founder, chairman and chief investment officer of Ritholtz Wealth Management. Hosts the Masters in Business podcast for Bloomberg and wrote How NOT to Invest.

• 10 Thursday AM Reads

  My morning reads: • Here’s Who Trump Should Blame for the Rate Hike He’s Raging About:He promised lower prices and lower interest rates. His policies delivered renewed inflation and a rate hike. (The Bulwark) • Gas Pric…

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Director of institutional asset management at Ritholtz Wealth Management. Writes the A Wealth of Common Sense blog and co-hosts the Animal Spirits podcast with Michael Batnick.

• Why Are Valuations Falling in a Bull Market?

  Rising rates, higher inflation and falling PE ratios.

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Founded Bridgewater Associates in 1975 and led it until stepping back from control in 2022. Author of Principles, The Changing World Order and How Countries Go Broke; publishes economic analysis at economicprinciples.org.

• By recognizing the higher-level consequences nature optimizes for, I've come to see that people who overweigh the first-order consequences of their decisions and ignore the effects of second- and subsequent-order consequences rarely reach their goals. This is because first-order consequences often have opposite desirabilities from second-order consequences, resulting in big mistakes in decision making. #principleoftheday

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Economist; former chief economist of the International Monetary Fund.

• Let me stay away from personal remarks. As you kindly invited me to do so, I am happy to continue our exchange. Let me start by reproducing and then commenting on three remarks you make in your two recent tweets. “I know full well what justified the use of OATi in 1998, namely a lower interest rate since the investor takes on less risk. Except that today, with the international context and climate disruption making prices more volatile, the cost of these indexed bonds is rising.” My humble view: More volatile inflation makes inflation protected bonds more, not less attractive. “As such, I sta…
  Quoting@ericcoquerelPas de souci pour échanger des arguments avec vous @ojblanchard1 mais un tout petit peu moins de condescendance dans l’échange ne serait pas de trop 🔽. Le résultat des politiques économiques que vous avez soutenues depuis des années devrait, je pense, vous amener à un peu plus d’humilité. Je sais…

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Economist; former chief economist of the International Monetary Fund.

• i was going to write something, but Quentin beat me to it... Let me put it another way, so that Chairman Coquerel @ericcoquerel understands and corrects his statement. When a state issues nominal bonds (bonds that pay in euros), the real value of interest payments varies with inflation, creating risk for investors. So they require a higher interest rate to compensate for the risk. In issuing inflation protected bonds, the state eliminates the risk and thus is able to get a lower rate. This decreases the burden of the debt. This is good. Always happy to help the Chair of the Finance Committee…
  Quoting@QuentinVandewe2Est-ce que LFI organise un concours Lépine pour la théorie du complot la plus idiote sur la dette ? Après la Banque de France qui revendrait la dette en secret, Mélenchon découvre que l'État « vient de proposer de nouveau des titres indexés sur le capital et des intérêts compensant l'inflation ». U…

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Co-founder and chief investment officer of Cambria Investment Management. He has written several books on quantitative asset allocation, blogs at Meb Faber Research and hosts The Meb Faber Show.

• 𝗕𝗼𝗻𝗱𝘀 𝗯𝗲𝗮𝘁 𝗡𝗮𝗽𝗼𝗹𝗲𝗼𝗻, 𝘁𝗼𝗽𝗽𝗹𝗲𝗱 𝗮 𝗽𝗿𝗶𝗺𝗲 𝗺𝗶𝗻𝗶𝘀𝘁𝗲𝗿, 𝗮𝗻𝗱 𝗺𝗮𝗱𝗲 𝗧𝗿𝘂𝗺𝗽 𝗯𝗹𝗶𝗻𝗸. 𝗕𝗼𝗿𝗶𝗻𝗴 𝘁𝗵𝗲𝘆 𝗮𝗿𝗲 𝗻𝗼𝘁. My guest today is Robin Wigglesworth (@RobinWigg), editor of @FTAlphaville and author of A Fabulous Debt, a thousand-year history of the market that sets the price of everything else. We get into: • An Austrian 100 year bond that lost 80%, while a defaulting Argentina paid off better • Why T-bills feel safe but can lose you 50%+ in real terms after inflation • Is private credit the next systemic blowup? • Why the $12 trillion repo mar…

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Investing columnist for The Wall Street Journal and editor of the revised edition of Benjamin Graham's The Intelligent Investor.

• My latest @WSJ column: Treasury inflation-protected securities, or TIPS, can help investors in or near retirement to protect their nest egg

  wsj.com

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Canadian full-stack web developer who makes JavaScript and CSS video courses and co-hosts the Syntax podcast.

• Genie Garage doors enabled caching on their API resulting in everyones garage door being shared with everyone else using the API Cache Ruins Everything Around Me
  Quoting@IAmArcIvanov@TheGenieCompany Your AlladinConnect is either breached or malfunctioning where users using API integration (in my case via HASS) are seeing garage doors of other people's accounts. The number of the devices populated by the API endpoint keeps growing as of Sept 6th 1:42 AM.

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Director of institutional asset management at Ritholtz Wealth Management. Writes the A Wealth of Common Sense blog and co-hosts the Animal Spirits podcast with Michael Batnick.

• I know everyone hates bonds right now b/c inflation, govt debt, etc But if you own a bond index fund that tracks the Agg you're getting 5.2% avg yield to maturity right now Investors would have killed for yields this high at any point in the past 15 years or so

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Director of institutional asset management at Ritholtz Wealth Management. Writes the A Wealth of Common Sense blog and co-hosts the Animal Spirits podcast with Michael Batnick.

• We now have: 7% mortgage rates 5% bond yields 3.5% inflation A roaring stock bull market A transformational tech innovation boom Good movies Angst among the younger generation This really is the 1990s all over again

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Machine-learning researcher on open language models; writes the Interconnects newsletter and the RLHF Book, after leading post-training at Ai2.

• Was spending too much time reading Tweets, so set out to write down why one resignation turned the embers of AI fear into a wildfire -- and importantly square which claims I think are valid or hyperbole in the resulting discourse.

  interconnects.ai

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Mathematician at UCLA, working mainly in harmonic analysis and partial differential equations. Writes What's new, a long-running blog on their research, open problems and expository notes.

• While working on the revision of the Equational Theories Project (ETP) report at https://arxiv.org/abs/2512.07087 I came across an observation that we quietly made at the back of that report (see Section 14.1) but has become more relevant today. The ETP was a successful project, running over several months, to resolve over 22 million implications in universal algebra (and formalize them in Lean) through a variety of methods, both human and automated, although in our case the automation was much more in the ``good old-fashioned'' form of utilizing automated theorem provers (ATP) and simple scr…

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Economist; Ronald A. Kurtz Professor of Entrepreneurship at MIT Sloan, former chief economist of the International Monetary Fund, and co-author of 13 Bankers and Power and Progress.

• What is the Bond Market Saying? https://t.co/4U5yklL8mh via @YouTube it is telling the Fed to raise short-term interest rates, to bring inflation down… but the White House has a different (and entirely wrong) theory of the case

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• Does the Fed Have Inflation Under Control? - Power and Consequences Epis... https://t.co/XFIu9fefNJ via @YouTube Don’t expect the Fed to raise short-term rates in September. The bond market on the other hand…

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Economist at the Hoover Institution; wrote The Fiscal Theory of the Price Level and blogs as The Grumpy Economist.

• More on lower rates

  This follows up my last post on lowering rates to lower inflation.

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Director of institutional asset management at Ritholtz Wealth Management. Writes the A Wealth of Common Sense blog and co-hosts the Animal Spirits podcast with Michael Batnick.

• Some questions: Would inflation be even worse if we weren’t in a housing recession? Are private markets the perfect place to hide fraud? Are colleges screwed? Is NVDA the anti-bubble? How important is the wealth effect to the economy?

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Economist; writes In My Tribe, and wrote The Three Languages of Politics.

• Economics Links, 9/3/2026

  The WSJ on mortgage defaults; A committee to advise the Fed on inflation; Andreas Steno Larsen on the rickety market for long-term U.S. bonds; Gad Levanon on unemployment among young college grads

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British designer and technologist; co-founder of the design studio BERG, which made Little Printer, and writer of the blog Interconnected.

• llm naming inflation is out of control. Astra and Mythos pretty much maxing out in terms of scale, I mean where do you go from there

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Investment researcher and engineer who runs Lyn Alden Investment Strategy, writing on macroeconomics, currency systems and equity analysis.

• Someone dug this old gem up, so I checked the resulting outcome, 6+ years later. The moral of the story is don't buy Clorox for 30x earnings and don't lend money to the government for a 0.6% yield. If you do, you're gonna have a bad time.
  Quoting@LynAldenContactClorox $CLX trades at nearly 30 times earnings and grows at a low single-digit growth rate per year. Dividend yield is 2.2%. Question: Would you rather buy and hold that for the next ten years, or a 10-year Treasury note yielding 0.6%?

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Novelist and critic, author of The Body Scout and Metallic Realms; writes the newsletter Counter Craft on fiction craft and the publishing industry.

• Stitching Up the Creature; Or, the Horrors of Revision

  Some recent links plus an update on how my horror novel revisions are going

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Monetary economist known for NGDP-level targeting. Wrote TheMoneyIllusion until it closed in 2024 and now writes The Pursuit of Happiness.

• Basil Halperin on sticky wage models

  Why wage inflation is what matters

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Writer of the personal-finance blog Of Dollars And Data and author of Just Keep Buying and The Wealth Ladder. Chief Operating Officer at Ritholtz Wealth Management.

• x.comWhat if I told you that $100 at 25 is worth $500 at 65 even AFTER we adjust for inflation? My latest on why your money is worth a lot more when you're young:

  ofdollarsanddata.com

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• BlogWhy $100 in Your 20s is Worth $500 in Your 60s

  What if I told you that $100 at 25 is worth $500 at 65, even after we adjust for inflation? Well...it is. There's an unspoken belief in personal finance that a dollar is always worth a dollar (putting inflation aside).…

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Economist at the Hoover Institution; wrote The Fiscal Theory of the Price Level and blogs as The Grumpy Economist.

• Raise rates? Warsh's conundrums

  Inflation is stubbornly high, and the Fed mulls whether to raise rates.

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Monetary economist known for NGDP-level targeting. Wrote TheMoneyIllusion until it closed in 2024 and now writes The Pursuit of Happiness.

• Thoughts on inflation and monetary policy

  Be careful what you ask for

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Technologist and entrepreneur; former CTO of Threadless and chief technology officer of the 2012 Obama re-election campaign.

• earthquake-notifier — This app sends a push notification when a notable earthquake happens near a monitored location (Kofu, Yamanashi by default). It is a near-real-time digest, not an early-warning…

  Commitsfix(alerts): preserve continuous alert radius · style(gates): match house JSDoc and drop a needless lint suppression · test(gates): replay the Uto revision sequence end to end

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Economist; Professor of the Practice of Economic Policy at Harvard, nonresident senior fellow at the Peterson Institute, and Chairman of the US Council of Economic Advisers from 2013 to 2017.

• This is the cut of the data that had people especially worried about inflation after this week's PCE infaltion release.

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Economist; Professor of the Practice of Economic Policy at Harvard, nonresident senior fellow at the Peterson Institute, and Chairman of the US Council of Economic Advisers from 2013 to 2017.

• PCE-based ecumenical underlying inflation measure was 3.5% in May. As most metrics are highly elevated.

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• PCE inflation came in high. And the details were even more worrying than the headline as the risk of inflation mounting outside the tariff/Iran affected sectors. Core PCE annual rate: 1 month: 3.9% 3 months: 3.5% 6 months: 4.1% 12 months: 3.4%

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Economist at the Hoover Institution; wrote The Fiscal Theory of the Price Level and blogs as The Grumpy Economist.

• Shock Accounting.

  The lab-leak shock really caused inflation

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Economist at the Hoover Institution; wrote The Fiscal Theory of the Price Level and blogs as The Grumpy Economist.

• Supply Shocks and Nominal Anchors

  Updating “Inflation,” I took “supply” and “demand” shocks more seriously, in a FTPL framework.

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Economist; Professor of the Practice of Economic Policy at Harvard, nonresident senior fellow at the Peterson Institute, and Chairman of the US Council of Economic Advisers from 2013 to 2017.

• Looking at today's headlines on inflation I want to re-up this. Is a peculiarity that 100% of the jobs focus is 1-month while majority of inflation focus is 12-months. If May-25 jobs was 400K & May-26 was 300K the 12-month number would go down but no headline or even line in the article would be "job growth stalled in May".
  Quoting@jasonfurmanI mostly avoid media criticism because the reporters that write these stories 100% understand all the issues I'm raising and are consistent over time. But I wish the editorial choices would move away from a focus on 12-month changes, reversing headlines and subheads.

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• Three things about today's inflation report: 1. 12-month inflation increased (because May-26 > May-25) 2. 1-month inflation slowed (because May-26 < Apr-26) 3. Inflation came in below expectations. Here is core.

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Programmer and writer on computer architecture, performance, and software reliability. He has worked on CPU design at Centaur Technology and on software at Google and Microsoft, and writes long-form technical essays at danluu.com.

• In 10 years, will at least one of {Anthropic, OpenAI} be a public company valued at >= $1T in May 2026 dollars after adjusting for S&P 500 valuations (analogous to inflation adjustment, but using S&P 500 instead of CPI)?

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Swedish programmer with degrees in engineering and psychology, author of Your Code as a Crime Scene and founder of CodeScene.

• I still meet people convinced that AI coding tools will soon reach a point where code quality, design, and even architecture are "solved". So I ran a small ad-hoc experiment. I’ve been working on a CLI tool and let agents plan and implement a first functionally correct version. I provided strict instructions around testing strategy, workflows, and implementation constraints. But I deliberately removed the @codescene MCP and the safeguards I normally rely on. Unsurprisingly, the resulting code suffered from a ton of problems. It would have been a shaky foundation to continue building on. How s…

  MCPRelated

President of the United States, the 45th from 2017 to 2021 and, as of 2026, the 47th; before politics a New York property developer who ran the Trump Organization, and the host of The Apprentice from 2004 to 2015.

• Merry Christmas to all, including the Radical Left Scum that is doing everything possible to destroy our Country, but are failing badly. We no longer have Open Borders, Men in Women’s Sports, Transgender for Everyone, or Weak Law Enforcement. What we do have is a Record Stock Market and 401K’s, Lowest Crime numbers in decades, No Inflation, and yesterday, a 4.3 GDP, two points better than expected. Tariffs have given us Trillions of Dollars in Growth and Prosperity, and the strongest National Security we have ever had. We are respected again, perhaps like never before. God Bless America!!! Pr…

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Experimental psychologist and author of the blog Experimental History, on psychology, science reform and creativity.

• If you can say "All counterexamples are critical and require revision of my theory" I will give you a big kiss on the lips

  experimental-history.com

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Founder of the toy manufacturer Viahart; writes about manufacturing, importing and why bringing production back to America is harder than it sounds.

• Amazon’s Pricing Policies Promote Inflation

  The state of California has sued Amazon in what may be the biggest antitrust case for 25 years, when 20 states joined the US Department of Justice to sue Microsoft. These cases revolve around whether consumers are harme…

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Physicist and science communicator. Writes Backreaction and makes videos explaining new physics and astronomy results, frequently to argue that the headline about them overstates the case.

• Galactic mass-to-light ratios with superfluid dark matter

  Context. We make rotation curve fits to test the superfluid dark matter model. Aims. In addition to verifying that the resulting fits match the rotation curve data reasonably well, we aim to evaluate how satisfactory th…

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Economist; Professor of the Practice of Economic Policy at Harvard, nonresident senior fellow at the Peterson Institute, and Chairman of the US Council of Economic Advisers from 2013 to 2017.

• Why Did (Almost) No One See the Inflation Coming?

  To understand the possible trajectory of inflation in 2022 and beyond, it is helpful to understand why the United States and Europe had so much inflation in 2021.

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