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Can we predict the likelihood of heart disease from sleep and exercise? This is my fourth post on my journey to build a toy GPT. I’d recommend checking out my previous posts before diving into this one. Let’s train a model to predict heart disease using sleep and exercise data. Unlike our previous example involving…
a year ago

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More from Seeking Wisdom

It’s a treasure trove of health insights!

Use Insulin wisely Life on Earth started simple. For nearly 2 billion years, tiny single-celled organisms dominated. Then, a lucky accident changed everything. One cell swallowed another, and the swallowed cell became mitochondria, the powerhouse of complex cells. This chance event led to all complex life, including plants, animals, and us. This microscopic accident is…

5 months ago 70 votes
Focus on the process, not the outcome

Woorkeri Raman, a former Indian cricketer and former coach of the India women’s national cricket team, has two non-negotiables. As an offspinner, you must never get cut, and you must never get driven through the covers. Even when Ravichandran Ashwin takes five wickets, Raman will still point out if he got cut or driven off…

8 months ago 110 votes
What I Learned from The South Asian Health Solution and wearing a Continuous Glucose Monitor

We all know avocados are healthy, and coke is bad. Yet we can’t help but gulp down a coke with a plate full of french fries. It takes an enormous amount of energy to break bad habits. I’ve broken bad habits under two conditions: (a) it’s a do-or-die situation, or (b) you have a device…

10 months ago 129 votes
Ruturaj Gaikwad, P-value, and Bayes’ Theorem

IPL is one of the greatest entertainments for a cricket lover like me. Chennai Super Kings (CSK) is my favorite team. Ruturaj Gaikwad, the new CSK captain for the IPL 2024 season, lost 10 out of 13 tosses: LLLLWLLLLLLWL. The probability of seeing the sequence LLLLWLLLLLLWL is 0.513 or 0.00012. Unsurprisingly, the odds of seeing…

11 months ago 136 votes
A great investor is a great rejector

I tend to grasp math concepts better from books written for other fields. Take linear algebra for example — I developed a stronger understanding and appreciation for it after reading the book Modeling Life. Similarly, the investing book What I Learned About Investing from Darwin gave me deeper insights on how base rates, sensitivity, and…

11 months ago 144 votes

More in finance

It Probably Takes More than Four Years to Eliminate Reserve Currency Status

Plus! Elasticity; Tail Risk; What to Buy; How the Decision Got Made; US Export Pacing

12 hours ago 1 votes
YoY Measures of Inflation: Services, Goods and Shelter

Here are a few measures of inflation: Click on graph for larger image. Services were up 3.7% YoY as of March 2025, down from 4.1% YoY in February. The second graph shows that goods prices started to increase year-over-year (YoY) in 2020 and accelerated in 2021 due to both strong demand and supply chain disruptions. Durables were at -1.0% YoY as of March 2025, up from -1.2% YoY in February. Commodities less food and energy commodities were at 0.0% YoY in March, unchanged from 0.0% YoY in February. Here is a graph of the year-over-year change in shelter from the CPI report (through March) and housing from the PCE report (through February) Shelter was up 4.0% year-over-year in March, down from 4.2% in February. Housing (PCE) was up 4.3% YoY in February, down from 4.5% in January. This is still catching up with private new lease data. Core CPI ex-shelter was up 1.8% YoY in March.

13 hours ago 1 votes
Last Gasp of the Landfill Economy

It seems we're supposed to mourn the last gasp of The Landfill Economy. Perhaps we should celebrate its demise. Globalization's great gift wasn't low prices--it was the collapse of durability, transforming the global economy into a Landfill Economy of shoddy products made of low-cost components guaranteed to fail, poor quality control, planned obsolescence and accelerated product cycles--all hyper-profitable, all to the detriment of consumers and the planet. Globalization also accelerated another hyper-profitable gambit: . Since all the products are now made with the same low-quality components, they all fail regardless of brand or price. The $2,000 refrigerator lasts no longer than the $700 fridge. Since the manufacturers and retailers all know the products are destined for the landfill by either design or default, warranties are uniformly one-year--and it's semi-miraculous if the consumer can find anyone to act on replacing or repairing the failed product even with the warranty. In The Landfill Economy, Consumer choice is pure illusion. I'd like to buy once, cry once, so where is the option with a 10-year all parts and labor warranty? There isn't one, because nothing is durable--by design or default. As a result, The Landfill Economy is fundamentally extortionist. We know this product will fail, you know this product will fail, and so here's our offer: buy a 3-year extended warranty for a hefty sum, because we've engineered the product to fail in four years. If the product is digital, then even if it still functions, we'll force you to replace it via a new product cycle: we no longer support the old operating system, and since your device is out of date (heh) it can't load the new OS, and since all the apps now only function with the new OS, your device is useless. The low price is also illusory, as we now have to buy four, five or ten products instead of one durable product. Appliances that once lasted 40 years now fail in 6 or 7 years if not sooner, so over the course of 40 years we have to buy five, six or seven appliances instead of one. Note that these durable products weren't super-expensive commercial appliances; they were ordinary consumer appliances produced domestically in vast quantities. Digitization is a key driver of The Landfill Economy, as cheap electronics all fail, and the product / vehicle / tool becomes a brick. Since inventory is an expense, it's been eliminated, so parts for older products are soon out of stock and unavailable. In a few years, the firmware is no longer supported, and in a few decades, nobody will even know what coding was embedded in the chipset, but it won't matter anyway, because the chipsets are long gone. Readers tell me vehicles are now wondrously reliable. Um, yeah, until they need to be repaired. Then the cost is higher than what I've paid for entire used cars. A friend was showing us his 1957 Chevrolet Bel-Air. Unlike the stainless steal and low-quality chrome of today, the original parts are still untarnished. Since the entire vehicle is analog, parts can be scrounged or fabricated or swapped out with a similar set-up. Does anyone seriously believe that a chipset-software-dependent vehicle today will still be running 68 years from now? Analog parts can be cast or welded; customized chipsets and firmware coding cannot. The original components will all be history. Our friend recounted a very typical story about repairing his recent-model pickup truck. Since the engine was no longer responding to the accelerator, he borrowed a diagnostic computer (horribly expensive to maintain due to the extortionist monthly fee to keep the software upgraded) and came up with zip, zero, nada. After swapping out the fuel pump at great expense and finding the problem persisted, he went online to YouTube University and found one video that explained the relay box from the accelerator to the engine didn't show up in the diagnostic codes, so the problem could not be identified. The relay box cost $400, and likely consisted of components worth no more than a few dollars each. So after $1,000 in parts and his own labor, the problem was finally fixed. If this qualifies as "super-reliable and maintenance-free," then the diagnosis is obvious: mass delusion. So now the status quo is desperate to maintain the global assembly lines feeding the hyper-profitable Landfill Economy. This may well be the last gasp of The Landfill Economy, as the supply chains of shoddy products designed to fail will break and consumers may well awaken to the high cost over time of an economy based on planned obsolescence, accelerated product cycles and extortionist illusions of choice. Last week I bought an expensive portable solar panel manufactured in China from a local distributor. The U.S. brand distributing the product has a good reputation for quality. Of course the warranty is for one year. The panel failed in less than a week: I smelled the unmistakable odor of an electrical short (insulation melting) and noticed the plastic rectangle that the output cord extended from was dimpled by high heat. The plastic part had no visible way to open it, and no visible way to replace it. So the entire panel is unrepairable. (The local distributor had one in stock, so I was able to get a replacement. Here's hoping it has a non-defective set of components.) It's doubtful anyone has the parts in stock, and it's also doubtful that it could be repaired even if one pried open the plastic casing to examine the melted bits. The parts are in one place--the factory that assembled the panel. So this panel, manufactured at great expense of costly materials, will end up in the landfill after five days of service. And no, it won't be recycled, as there's no system to do so, and it doesn't make financial sense to even try. Wow, isn't The Landfill Economy fantastic? Look how profitable it is, as consumers must constantly replace or repair at great expense everything that comes off the wonderful global supply chains. And since we worship "growth" and profits, The Landfill Economy is the ideal arrangement--for those making and selling all the stuff. For the consumers--not so much, but who cares, since they have no choice but to keep buying shoddy products designed to fail. Add the defective solar panel to the long list of other failed products in our household: the iPhone screen that failed, the washer that failed, the dryer that failed (which I was able to fix by replacing the motherboard, which only cost half the price of a new dryer with my "free" labor), the failed fridge, defective toaster from Walmart, shoes from Costco that fell apart in a few months, and the failed AC system in our 2016 Honda Civic. (Mention this to any mechanic and they quickly nod, "oh yeah, those all fail.") All of this failure generates "growth" and profits, the two Grails every economist worships. Here's another load of "growth" going straight into the landfill. It seems we're supposed to mourn the last gasp of The Landfill Economy. Perhaps we should celebrate its demise. New podcast: The Coming Global Recession will be Longer and Deeper than Most Analysts Anticipate (42 min) My recent books: Disclosure: As an Amazon Associate I earn from qualifying purchases originated via links to Amazon products on this site. The Mythology of Progress, Anti-Progress and a Mythology for the 21st Century print $18, (Kindle $8.95, Hardcover $24 (215 pages, 2024) Read the Introduction and first chapter for free (PDF) Self-Reliance in the 21st Century print $18, (Kindle $8.95, audiobook $13.08 (96 pages, 2022) Read the first chapter for free (PDF) The Asian Heroine Who Seduced Me (Novel) print $10.95, Kindle $6.95 Read an excerpt for free (PDF) When You Can't Go On: Burnout, Reckoning and Renewal $18 print, $8.95 Kindle ebook; audiobook Read the first section for free (PDF) Global Crisis, National Renewal: A (Revolutionary) Grand Strategy for the United States (Kindle $9.95, print $24, audiobook) Read Chapter One for free (PDF). A Hacker's Teleology: Sharing the Wealth of Our Shrinking Planet (Kindle $8.95, print $20, audiobook $17.46) Read the first section for free (PDF). Will You Be Richer or Poorer?: Profit, Power, and AI in a Traumatized World (Kindle $5, print $10, audiobook) Read the first section for free (PDF). The Adventures of the Consulting Philosopher: The Disappearance of Drake (Novel) $4.95 Kindle, $10.95 print); read the first chapters for free (PDF) Money and Work Unchained $6.95 Kindle, $15 print) Read the first section for free Become a $3/month patron of my work via patreon.com. Subscribe to my Substack for free NOTE: Contributions/subscriptions are acknowledged in the order received. Your name and email remain confidential and will not be given to any other individual, company or agency. Thank you, Melissa B. ($70), for your splendidly generous subscription to this site -- I am greatly honored by your steadfast support and readership.   Thank you, Rarksin Farms ($7/month), for your marvelously generous subscription to this site -- I am greatly honored by your support and readership. Thank you, Neil ($70), for your magnificently generous subscription to this site -- I am greatly honored by your support and readership.   Thank you, Remo ($7/month), for your superbly generous contribution to this site -- I am greatly honored by your support and readership. Go to my main site at www.oftwominds.com/blog.html for the full posts and archives.

4 hours ago 1 votes
Hotels: Occupancy Rate Decreased 0.6% Year-over-year

From STR: U.S. hotel results for week ending 5 April The U.S. hotel industry reported mixed year-over-year comparisons, according to CoStar’s latest data through 5 April. ... 30 March through 5 April 2025 (percentage change from comparable week in 2024): Occupancy: 63.8% (-0.6%) emphasis added The following graph shows the seasonal pattern for the hotel occupancy rate using the four-week average. Click on graph for larger image. The 4-week average of the occupancy rate is tracking last year and is at the median rate for the period 2000 through 2024 (Blue). Note: Y-axis doesn't start at zero to better show the seasonal change. The 4-week average will mostly move sideways until the summer travel season.  We might see a hit to occupancy during the summer months due to less international tourism.

6 hours ago 1 votes
A Decade of Headwinds

These headwinds will persist for the next decade or two. The stock market is rallying hard after a brutal sell-off--not an uncommon occurrence. As we savor our winnings in the ship's first-class casino, it's not a bad idea to step out onto the deck and gauge the weather. There are headwinds. Not zephyrs, not gusts, just steady, strong headwinds. 1. Presidents Trump and Xi view each other an as existential challenge to the future prosperity of the nation they lead. Neither can afford to lose face by caving in, and each has a global strategy with no middle ground. 2. Global trade / capital flows are all over the map. Uncertainty is the word of the moment, but perhaps the more prescient description is unpredictability: if enterprises have no visibility on the future costs of trade, commodities, labor and capital, they have little choice but to avoid big bets until visibility is restored. 3. The American consumer is tapped out. Credit card charge-offs are rising, auto loan defaults are rising, air travel is faltering--there are many sources of evidence that consumers--especially the top 20% households whose spending has propped up the economy--have reached financial and perhaps psychological limits. 4. The Reverse Wealth Effect is kicking in as stocks and other assets roll over into volatility and potential trend changes into declines rather than advances. The top 10% who own the majority of income-producing assets and risk assets are seeing $10 trillion of losses followed by recoveries of $5 trillion. Swings of such magnitude do not support confidence in the stability of current valuations or offer visibility on the odds of future capital gains. Just as enterprises must respond to poor visibility by reducing risk, households respond to increasing volatility and unpredictability by reducing borrowing and spending. Stable gains in asset valuations fuel the Wealth Effect, encouraging consumers to borrow and spend more because their wealth has increased. The Reverse Wealth Effect triggered by losses, volatility and low visibility encourages reducing risk, borrowing and spending. 5. There will be no "save" by the Federal Reserve or massive new Federal fiscal largesse. Tariffs and reshoring manufacturing are inflationary, so the Fed no longer has the freedom to create a few trillion dollars out of thin air to juice risk assets. The federal government's borrowing-and-spending spree threatens the integrity of the nation's currency and economy, so the the unlimited checkbook has been put in the drawer. 6. The two decades of deflation generated by China has ended. Central banks could play in the Zero-Interest Rate Policy sandbox because inflationary forces were all offset by the sustained deflationary forces of China's export machine and credit expansion. Now every economy, including China's, faces inflationary tides from a number of sources. 7. The sums required to rebuild America's industrial base will pinch speculative borrowing and consumer spending. Now that both the Fed and the federal government are restrained from borrowing and blowing additional trillions, private capital will have to be enticed into long-term investments in Treasury bonds and reshoring. The ways to incentivize long-term investing rather than consumption and speculation are recession and deflating asset bubbles. Both re-set expectations, risk appetites and incentives. Everyone with direct experience of manufacturing and supply chain networks is telling us that reshoring will be a costly, long-term project, requiring the rebuilding of the entire ecosystem that's been lost to hyper-globalization's offshoring and hyper-financialization's predation. Note that all credit-driven asset bubbles pop. Yes, the market is rigged, but that doesn't mean it always goes up or it's easy to catch the declines. The dot-com bubble lost 80% of its peak valuation despite assurances that was "impossible." 8. Demographics are not supportive of risk-asset expansion. Courtesy of @Econimica, consider this chart of the year-over-year change in high and high-middle-income populations globally. The change is now negative--fewer folks are entering these categories. In response, global debt has soared, in effect offsetting the decline of consumer demographics with borrowed money. As the global Boomer population retires and needs at-home or institutional care, they will sell their assets to fund these soaring expenses: stocks, bonds, real estate--all will go on the auction block to raise cash. The older cohort of investors is also more risk averse, as they know they don't have a decade or two to recover from a catastrophic decline in their assets' valuations. None of these dynamics can be reversed. These headwinds will persist for the next decade or two. New podcast: The Coming Global Recession will be Longer and Deeper than Most Analysts Anticipate (42 min) My recent books: Disclosure: As an Amazon Associate I earn from qualifying purchases originated via links to Amazon products on this site. The Mythology of Progress, Anti-Progress and a Mythology for the 21st Century print $18, (Kindle $8.95, Hardcover $24 (215 pages, 2024) Read the Introduction and first chapter for free (PDF) Self-Reliance in the 21st Century print $18, (Kindle $8.95, audiobook $13.08 (96 pages, 2022) Read the first chapter for free (PDF) The Asian Heroine Who Seduced Me (Novel) print $10.95, Kindle $6.95 Read an excerpt for free (PDF) When You Can't Go On: Burnout, Reckoning and Renewal $18 print, $8.95 Kindle ebook; audiobook Read the first section for free (PDF) Global Crisis, National Renewal: A (Revolutionary) Grand Strategy for the United States (Kindle $9.95, print $24, audiobook) Read Chapter One for free (PDF). A Hacker's Teleology: Sharing the Wealth of Our Shrinking Planet (Kindle $8.95, print $20, audiobook $17.46) Read the first section for free (PDF). Will You Be Richer or Poorer?: Profit, Power, and AI in a Traumatized World (Kindle $5, print $10, audiobook) Read the first section for free (PDF). The Adventures of the Consulting Philosopher: The Disappearance of Drake (Novel) $4.95 Kindle, $10.95 print); read the first chapters for free (PDF) Money and Work Unchained $6.95 Kindle, $15 print) Read the first section for free Become a $3/month patron of my work via patreon.com. Subscribe to my Substack for free NOTE: Contributions/subscriptions are acknowledged in the order received. Your name and email remain confidential and will not be given to any other individual, company or agency. Thank you, Steve B. ($70), for your splendidly generous subscription to this site -- I am greatly honored by your steadfast support and readership.   Thank you, Christine M. ($70), for your marvelously generous subscription to this site -- I am greatly honored by your support and readership. Thank you, Benjamin W. ($70), for your magnificently generous subscription to this site -- I am greatly honored by your support and readership.   Thank you, Chris G. ($32.40), for your superbly generous contribution to this site -- I am greatly honored by your support and readership. Go to my main site at www.oftwominds.com/blog.html for the full posts and archives.

2 days ago 2 votes