Saturday, March 14, 2026

Making tires with robots, and rubber harvesting.

I found this video totally mesmerizing. The level of robotic automation is incredible, and the agility with which the robots handle the materials is impressive. 

I always ask myself in such videos, when there's one step that is 1:04 & 2:08 done by human hand, what was it about this step that a robot was unable to reliably do? (I think it's a light metal bead that can easily end up at the wedding angle in three first one, and inspection for defects at the latter one.)
Why would they stockpile hundreds of spools of rubber at 0:53 rather than using them right away - is rubber harvest seasonal which could fall short of production demands? (Yes!)

 (How latex is harvested. - Tapping cannot occur when the bark is wet, so heavy rain reduces the number of workdays for farmers...Tapping is almost always done at night or in the early morning. This is because cooler temperatures lead to higher internal pressure in the tree's vessels, allowing the latex to flow for a longer duration before it naturally coagulates and seals the cut. Rubber trees contain latex in "laticifer" vessels that run vertically but slightly spiraled. By cutting at a 30-degree angle, tappers intersect the maximum number of these vessels to get the most liquid out. The cut needs to be deep enough to reach the vessels but shallow enough to avoid the cambium (the tree's growth layer). A precise, angled shave allows the bark to grow back smoothly. ) 


Fully robotic tire factory

Saturday, March 7, 2026

How to fall asleep at 3 am

Box breathing counting to 4-7-8
Tense then relax ascending muscles groups 
Cognitive shuffle - spell "blanket" with 3 random neutral items you associate with that letter and picture each item. 

Trump has "Victory disease"

History provides important lessons. This sobering and sad essay from the Atlantic yesterday describes the mismatch between military surgical precision and the lack of political strategy behind it. It's a ten-minute read, but if you don't have time, the first 4 and last 3 paragraphs make the most salient points. 


Trump has a severe case of 'victory disease'—revelling in the technical and professional capabilities of the American military, but void of any strategic purpose…. This is an excellent diagnosis of the historically common malady.

Operational Excellence, Strategic Incompetence
The president is pointing to the American military's excellence as though that somehow constitutes a strategy in itself.
By Tom Nichols
The Atlantic. MARCH 6, 2026, 9:04 PM ET

The war in Iran has reaffirmed two truths. One is that the United States is blessed with the most professional and effective military in the world. The men and women of the American armed forces can conduct missions of almost any size with formidable competence, from special operations to seize a rogue-state president to a large-scale war. The other truth is that the Trump administration, when it comes to strategy, is incompetent.

Strategy is about matching the instruments of national power—and especially military force—to the goals of national policy. The president and his team, however, have not enunciated an overarching goal for this war—or, more accurately, they have presented multiple goals and chosen among them almost randomly, depending on the day or the hour. This means that highly effective military operations are taking place in a strategic vacuum.

Worse, Donald Trump is now pointing to these missions as if the excellence with which they have been conducted somehow constitutes a strategy in itself. He appears so enthralled by the execution of these missions that he has enlarged the goals of this war to include the complete destruction of the Iranian regime, after which he will "Make Iran Great Again."

This kind of thinking is an old problem, and it has a name: "victory disease," meaning that victory in battle encourages leaders to seek out more battles, and then to believe that winning those battles means that they are winning the larger war or achieving some grand strategic aim—right up until the moment they realize that they have overreached and find themselves facing a military disaster or even total defeat. It is a condition that has afflicted many kinds of regimes over the course of history, one so common that my colleagues and I lectured military officers about it when I was a professor at the Naval War College. The issue is especially important for Americans, because when national leaders have exceptionally capable military forces at their disposal—as the United States does—they are even more likely to be seized by victory disease.

The Persian emperor Xerxes had it; that's how he found himself eventually suffering a historic defeat in Greece at the Battle of Salamis. Napoleon had it; that's how he ended up freezing in the Russian snow after years of brilliant victories over other European states. The French in 1870 had it; that's how they confidently marched to catastrophes against a superior Prussian army. The Axis had it; that's how Germany and Japan convinced themselves that their early successes meant that they could quickly defeat the Soviet Union and the United States, respectively.

The Americans caught the same bug in the Korean War, when they chased the North Koreans to the Yalu River, a drive that ended in disaster when Communist Chinese troops streamed across the border and joined the conflict. The U.S. fell prey to this syndrome again in Vietnam, when it poured men and material into the war for years yet remained unable to turn many battlefield triumphs into a strategic victory.

American policy in the Gulf War in 1991 is an honorable exception; George H. W. Bush avoided victory disease, calling an end to Operation Desert Storm rather than marching on Baghdad after achieving his stated aim of rescuing Kuwait. But his son, George W. Bush, chose to fight two wars at the same time. Once again, the men and women of the U.S. military managed to achieve remarkable operational successes, but it took years to stabilize Iraq, and Afghanistan today is back in the hands of the Taliban.

And now Trump seems to have contracted a whopping case of victory disease. He is clearly convinced that previous operations in Venezuela, Nigeria, Somalia, Syria, and, of course, Iran are all evidence that a total victory over the regime in Tehran will be relatively quick. But he has provided no conception of what "victory" would look like. As of yesterday, his goals have expanded to include a demand for "unconditional surrender."

Admiring the performance of the U.S. military is understandable. But it is not the same thing as using that military power to achieve some national purpose. Trump and Secretary of Defense Pete Hegseth so far seem to be enjoying the fireworks. But the efficient and rapid destruction of buildings and machines, and the killing of some enemy leaders, is not the same thing as a strategy.

Today, the U.S. and Israeli militaries have achieved almost full control of the skies over Iran and the waters around it. They appear able to destroy any targets they choose with near impunity. The Iranians still have the ability to strike back by launching missiles and drones at various targets, and they managed to kill six American service members with an attack against a makeshift installation in Kuwait. Nevertheless, Iran has been bested at the operational level of war, and its air and naval forces cannot offer meaningful resistance.

 American operations have not been flawless. Last week, a U.S. strike on an Iranian naval base may have destroyed an Iranian school and killed dozens of children. Every major military engagement is fraught with risks of targeting errors, friendly fire, and other accidents, and preliminary evidence indicates that the school bombing was a tragic American error, one that was made more likely by the U.S. and Israeli decision to attack during the day (when children would be in the building). Even so, American military operations have for the most part been astonishingly well executed. Years of training, study, and planning, along with careful use of intelligence, have all contributed to the rapid elimination of much of Iran's capacity to project power, and almost all of its ability to resist allied attacks.

Operational competence, however, cannot answer the question of national purpose. What is the war about, and when will America know it's done? Trump, when pressed, dodges the issue of war aims by pointing to the excellence of the military. "I hope you are impressed," Trump said on Thursday to ABC's Jonathan Karl. "How do you like the performance? I mean, Venezuela is obvious. This might be even better." Trump then repeated, "How do you like the performance?" Karl noted that no one is questioning the success of military operations, and he asked the president what happens next. "Forget about 'next,'" Trump answered. "They are decimated for a 10-year period before they could build it back."

Likewise, the next day, CNN's Dana Bash asked the president how he thought the war was going. Trump rated the war, Bash said, a 12 or 15 out of 10, and then said, "We're doing very well militarily—better than anybody could have even dreamed."

Each time Trump or one of his lieutenants speaks this way, they generate more questions than answers. Yes, military operations are proceeding impressively, with very few casualties among the U.S. and Israeli operators. But what would have constituted a "10" that we can now say that America is at a "15"? Now that Trump, at least for the time being, has issued a call for "unconditional surrender," perhaps vaporizing every piece of military hardware with an Iranian flag on it is enough. Comments on Thursday by Hegseth and Admiral Brad Cooper of Central Command suggest that this seems to be the plan.

But "unconditional surrender" is unlikely to last. To effect such a total defeat, Iran would have to be occupied and administered by the victors. This kind of language is at odds with the reluctance of some in the Trump administration and other Republicans, including Speaker of the House Mike Johnson, to even call Operation Epic Fury a "war." (I will exercise my prerogative here as someone who has studied and taught national security and international relations and confirm that when you bomb a nation, kill its leaders, and call for its people to rise up, you're engaged in war, and if you call for "unconditional surrender," you are definitely at war.)

Trump will likely find himself backpedaling from the demand for unconditional surrender. He might also redefine unconditional to denote more easily achieved aims. (Indeed, hours after Trump's post, the White House spokesperson Karoline Leavitt was already offering an interpretation of unconditional that was far more limited than absolute capitulation.) Soon, the Americans could find themselves retreating to the strategic incoherence that has characterized the administration's approach since the first hours of the war. Military operations and national purpose will become more and more distanced from each other, because military prowess cannot clarify America's war aims. As the old saying warns: If you don't know where you're going, any road will get you there.

My colleagues Marie-Rose Sheinerman and Isabel Ruehl have pointed out the severity of this problem by noting that Trump and his aides have offered at least 10 rationales for war over the course of only six days. Rationale No. 1 was "an imminent threat" from Iran, Rationale No. 2 was nuclear weapons, Rationale No. 5 was election interference, Rationale No. 6 was "world peace" writ large, Rationale No. 10 was that America had been dragged into the war by Israel. Some of these reasons might constitute a casus belli—others, such as Rationale No. 9 ("fulfill God's purpose"), less so—but Trump's team has thrown them all at the wall to see what sticks, perhaps in part because the war is still unpopular with the American public and Trump has so far seen no "rally 'round the flag" benefit from launching it.

But each of these rationales demands a different strategy; eliminating an imminent threat involves a different set of operations than establishing peace in the region (or the world). Instead, the Americans are choosing an "all of the above" approach, employing immense power across Iran. Entranced by the show, Trump, Hegseth, and others assume that because these operations are going well, something good will come of them. This kind of poor strategy, ironically, is an option only because of the excellence of the American and Israeli militaries: If Trump had to make decisions under greater material or military constraints, such as shortages of money, weapons, or talent, he would have to choose an actual war aim and stay with it.

If the goal is regime change and "unconditional surrender," do current U.S. operations support that goal? Again, military prowess and victory disease may be encouraging the White House to avoid thinking about some hard realities. Regimes are not changed by bombing; they are put in place by men and women wearing boots and carrying guns. (These need not be American boots, but they have to be somebody's boots.) Trump has called for the Iranians to surrender, but to whom? A U.S. occupation force? Or is an internal group of rebels assembling in Iran? In any case, a new regime will have to gain support by rebuilding infrastructure that's being destroyed. Are the target sets being adjusted accordingly over time? No one can answer these questions, because the civilian leadership of the United States does not seem to have thought them through.

Victory disease divorces military excellence from political wisdom and strategic discipline. It convinces leaders that whatever they're doing must be working and that they should keep doing it, blinding them to the possibility that military operations may have become counterproductive or detached from achievable aims. The American military is given tasks—clear the skies, suppress air defenses, sink the enemy navy—and then it breaks those instructions down into discrete and granular missions against particular targets. The pilots and planners can execute those missions with courage and professionalism, but they cannot force them to make strategic sense.

Meanwhile, despite the successes of the military overseas, Trump now admits that a regime that was supposed to be eliminated quickly could reach the United States with terrorist attacks. He told Time this week that "we expect some things. Like I said, some people will die. When you go to war, some people will die." The American people might be willing to tolerate such risks if they knew what their sons and and daughters were fighting for and how long they would be at war. Trump has retreated behind the skill of the U.S. military rather than answer such questions.

Perhaps the greatest danger of the current epidemic of victory disease is that it seems to be making Donald Trump think he's a brilliant strategist: He is already talking about overthrowing the government of Cuba, even as American forces are still fighting in the Middle East, and the threat of terror may well be growing at home now that the United States is at war. At this point, all Americans can do is admire the fortitude and excellence of the U.S. military while hoping for victory—whatever that is, and whenever it comes.

Giant salmon-growing ships can seek out perfect conditions for on-board fish farms.

A novel way of meeting the world's growing food needs. China 2:34 lacks the right conditions for salmon in near-shore aquaculture. Cold ocean water is cleaner 1:26 avoiding nutrient pollution. 


A similar Norwegian ship can 4:17 retreat to calmer waters in a storm, and its bays are 5:09 larger than 2 football fields. 

Open waters 3:01 evade lice that infect salmon farms in calmer waters, and a mobile platform can maneuver away from 19:26 heat waves, algal blooms and storms. 

Cooler ocean waters have 5:53 higher dissolved oxygen content, allowing 9:48 fish density 4-6 times higher than traditional aquaculture. Conditions in the tanks are carefully controlled to keep 21:20 fish mortality below 5%. Some ships will 22:50 collect and process waste for disposal on land. 

13:11 China plans another 30 ships in the fleet



Friday, March 6, 2026

Salvaging wastewater in a dessert with plants

https://youtu.be/f0skGsSd3jE?si=znpGdj4O6YhRdwGa

9:44 "over 1 billion people live in desserts." Biological eater treatment on a massive scale can help relieve water scarcity

Monday, March 2, 2026

Does the tail wag the dog? Index funds.

Do index funds drive the price of their underlying stocks? Do the index funds instantly purchase shares of their individual stocks when their own shares are bought or do they wait until end of day?

To answer your first question: Yes, index funds absolutely drive the prices of their underlying stocks, though often through "hidden" market mechanics rather than direct buying.
Whether they buy "instantly" depends entirely on whether you are buying an ETF (like VOO) or a Mutual Fund (like VFIAX).
1. Do they drive the price?
Yes, but it's a "tail wagging the dog" scenario. This happens through three main channels:
The Arbitrage Effect: When thousands of people buy an ETF, its price starts to rise slightly above the value of the actual stocks it holds (this is called a "premium"). Professional traders (Authorized Participants) notice this and instantly buy the underlying stocks and sell the ETF to pocket the difference. This buying pressure pushes the stock prices up.  
Inclusion Rallies: When a stock is added to a major index (like S&P 500), index funds must buy it. This "forced" demand often causes a massive price spike before the stock even joins the index.  
Price Correlation: Because index funds buy and sell all stocks in the "basket" simultaneously, stocks in the same index tend to move together more closely than they would based on their individual company performance.
2. When do they buy the shares?
The timing depends on the vehicle you are using.
Why "End of Day" is standard for Mutual Funds
Mutual funds calculate their Net Asset Value (NAV) once per day after the market closes. If you place an order at 10:00 AM, the fund won't actually "buy" your portion of the stocks until the end of the day because they need to see the total sum of all investors' orders to trade efficiently in bulk.  
How ETFs handle "Instant" buying
ETFs don't actually buy the stocks every time you buy one share. Instead, Authorized Participants (APs) act as the middleman. They watch the supply and demand. If there is a massive surge in buying at noon, the AP will go into the market, buy the underlying stocks right then, and "hand" them to the ETF provider in exchange for new ETF shares. This keeps the prices perfectly synced in real-time.  
Note: Because of this "batched" vs. "real-time" difference, Mutual Funds are generally better for long-term automated investing, while ETFs offer more control for people who care about the specific price at 10:30 AM versus 3:55 PM.

Friday, February 27, 2026

Is your relationship ok? Science vs

Economically-disadvantaged people have more arguments about finances, and accordingly higher divorce rates; (indirectly substantiated by -)
14:23 When the minimum wage was increased the divorce rate decreased by 10% 

22:30 "love-bombing" (effusive time-pressured affection - "I need to spend more time with you," or wanting to move in together too early) can be an early sign of coercive control; also questions about what you wear or "don't go do that - stay at home with me." 


Centrum multivitamins and blueberries combat aging brain



1:22 3500 took multivits improved memory recall and 3 yr of preserved memory function; not just expensive pee
3:40 increase choline intake (4:30 eggs, salmon, tuna, beef, chicken, soybeans) 
6:08 blueberries have anthocyanins that increase NO improves perfusion of brain - 1 cup of even 6:58 frozen blueberries or freeze-dried powder
8:45 Treadmill 3d/wk for 40 min @ 60-75% maxHR increased hippocampal volume where 9:15 memory, navigation, and recall take place. 

Monday, February 23, 2026

Realistic fat while robot movement

https://youtu.be/eQpyvR-B7hc?si=qMaHZlzBEev2WkyB


Back-in to parking spaces

Yesterday's NYT article complaining about people backing into parking spots got me thinking. 
I back in to parking spots because
  1. Your situational awareness of nearby cars and people is greater as you arrive, and your field of view is unobstructed by neighboring cars
  2. Your windshield and mirrors are less likely to have condensation as you arrive, so you have a better view of surroundings when doing the backing up
  3. The rear of the vehicle usually has higher clearance so you're less likely to damage a bumper against a high curb 
  4. Accidents happen more often when backing out of a parking lot than pulling forward 

The NYT reporter in the article below did little more than observational research, and thinks
"In a nation of rampant gun violence, backing in so you can quickly get out provides a sense of security."

But it's not because of tactical escape routes, it's because of accident data, and AAA has recommended backing in to a parking spot on arrival, per "updated guidelines. "We started promoting this around 2020"

There's not much science on this topic, but here's one analysis. 
"The analysis from this study implies that the pull-in/back-out parking maneuver is more likely to result in a collision...90% of North Carolina's parking-related fatal and serious injuries occurred during a back-out maneuver" [however, I'm not clear if this study compensated for the higher proportion of cars that back out which would skew the data towards crashes when backing out ]

Even when you normalize the data—comparing one "backing out" exit to one "driving out forward" exit—driving out forward is still significantly safer. 

Studies by the National Highway Traffic Safety Administration (NHTSA) show that "back-over" accidents (hitting a person) are almost exclusively tied to exiting a spot in reverse.  Ref ref 

This article suggests ways to minimize the risk of accidents when backing up, including turning down the radio and opening your window. 

There is also the "state of mind" aspect:
Pulling In: You are usually focused on the task of parking.
Backing Out: You are often transitioning into "trip mode"—checking GPS, adjusting the radio, or looking at traffic—which increases the likelihood of a distraction-related error.

Elderly drivers are particularly at risk of causing "back over" accidents because of their decreased neck and torso mobility to look over their shoulder, decreased visual acuity and longer recovery from glare [cataracts], and decreased cognitive ability to multi-task, and their higher rate of "pedal misapplication


Sunday, February 22, 2026

Predicting Alzheimer's from a blood test.

"models predicted the onset of Alzheimer's symptoms within a margin of three to four years…shows the feasibility of using blood tests, which are substantially cheaper and more accessible than brain imaging scans or spinal fluid tests, for predicting the onset of Alzheimer's symptoms...which will help [future patients] and their doctors develop a plan to prevent or slow symptoms...if we know how many rings a tree has, we know how many years old it is," Petersen said. "It turns out that amyloid and tau also accumulate in a consistent pattern and the age they become positive strongly predicts when someone is going to develop Alzheimer's symptoms." https://medicine.washu.edu/news/blood-test-clocks-predict-when-alzheimers-symptoms-will-start/ 
Predicting onset of symptomatic Alzheimerʼs disease with plasma p-tau217 clocks. 2026
[We were able to] "estimate the age at plasma %p-tau217 positivity [which] was associated with the age at onset of AD symptoms (adjusted R2 of 0.337−0.612) with a median absolute error of 3.0−3.7 years."

Friday, February 20, 2026

How to Minimize the Risk of an IRS Audit | Charles Schwab

https://www.schwab.com/learn/story/how-to-minimize-risk-irs-audit

Tax Filing
How to Minimize the Risk of an IRS Audit
A number of tax audits result from preventable mistakes. Here are the five most common audit red flags—and what to do to avoid them.
January 5, 2026•Hayden Adams


"Your federal tax return has been selected for examination."

Few pieces of correspondence evoke as much anxiety as an audit notice from the IRS. After all, not only can IRS audits be extremely time-consuming, but they often result in additional taxes, interest, and even penalties.

Certain taxpayers—business owners, the self-employed, and the wealthy—historically have been flagged for examination. That's because the tax returns of the affluent are generally more complex—and therefore more likely to contain red flags for the IRS, where I worked for eight years as a senior auditor.

Higher income, higher audit rates
Taxpayers with more than $5 million in income were by far the most likely households to be audited in 2022.

Fortunately, those red flags are well-known, making them easier to avoid during tax preparation. Here are five of the IRS' top audit triggers.

Get ready for tax time.

1. Missing income
Income derived from regular wages automatically have taxes withheld, and employers report those taxes to the IRS. However, taxes aren't normally withheld from nonwage income—including business income, capital gains, dividends, interest, rental income, and royalties—making it more prone to discrepancies and examination by the IRS.

What to do
Your financial firm will send 1099 forms for capital gains, dividends, and interest, which must be accurately accounted for on your return. For income that doesn't pass through an intermediary, such as business or rental income, you're required to document and report it yourself. Underreported income is often due to a missing or out-of-date 1099, inaccurate accounting practices, or both. Whatever your sources of income, you need to ensure your return reflects them all.

2. Large swings in income
Individuals whose income fluctuates significantly from one tax year to the next can also find themselves in the IRS' sights. This can be the case for those who are self-employed or own a business. Big changes in income are a huge red flag for the IRS because they sometimes signal underreported income, either in the current year or in previous years.

What to do
Consider including notes or an explanation with your tax filing if there are large fluctuations in your expenses or income from year to year. For example, if your business income plunged because you lost a large account, you'll want the IRS to take that into consideration when determining whether an audit is warranted. If you file electronically, most tax software allows you to add supplemental documentation and schedules to help explain your situation.

3. Business losses
Turning a profit can be challenging for any business, especially those just getting off the ground. However, the IRS will take notice if you claim losses year after year or if a loss is substantial. You're less likely to be audited in the first few years, when losses are normal and expected. Over the longer term, though, businesses are supposed to make money—and if yours doesn't, the IRS will want to know why.

What to do
Keep careful records for at least seven years that detail every dollar coming into and going out of your business. What's more, if your business is a sole proprietorship, the IRS may question whether it's more of a hobby—in which case the loss may not be deductible.

4. Questionable deductions
While your deductions may be well founded, some may nevertheless trigger a second look by the IRS. In particular, be mindful of:

Outsize charitable donations: The IRS flags charitable deductions that far exceed the average donation of those at a similar income level. Be aware, too, that such deductions are capped at 60% of your adjusted gross income (AGI) for cash donations and 30% of AGI for stocks and other property. And starting in 2026, total charitable donations, including carryover contributions, must exceed 0.5% of your AGI before you may claim a deduction.
Passive losses on a rental property: If the costs to operate a property exceed the rental income it generates, you may not be able to claim a loss—unless:
You own at least 10% of the property, you're personally involved in managing it, and your modified adjusted gross income is less than $100,000—or:
You're a qualified real estate professional (meaning you spend at least 750 hours annually on such work and it accounts for more than 50% of your annual working hours) and you take an active role in the management of the property.

Unqualified home-office deductions: Unless you're self-employed and conduct the majority of your business from your home, you cannot deduct any home-office expenses. People who work from home may assume they can take this deduction. Unfortunately, regular employees don't qualify, even if they pay out of pocket for all or part of their home-office setup.

What to do
Have supporting documentation for any deduction on your tax return, especially those that are significant or subject to special rules, such as rental losses. You can't always avoid an audit, but thorough records that support your deductions can quickly appease most auditors.

5. Undervalued assets
Estate tax returns tend to be audited at a fairly high rate. The biggest reason? Undervalued assets. The IRS has seasoned valuation experts, and if they think the estate has valued its assets too low, an audit could be just around the corner.

What to do
When valuing assets with no public market price—such as real estate, art, or a closely held business—executors of large estates should average the estimates from two or three qualified appraisers. Should the valuations come into question, having multiple appraisals can help substantiate your position.

The buck stops with you
Even if you hire a tax professional to prepare your return, the accuracy of your filing ultimately falls on your shoulders. I can't tell you how many people just sign their professionally prepared income tax returns and never review them.

Going through these steps may help reduce the likelihood of an audit, but if one is unavoidable, it also can help ensure your tax return stands up to scrutiny and potentially make for a smoother audit process. If you followed the rules, retain good documentation, and have a trusted tax advisor to represent you, the process can actually go quite smoothly.

A tale of three audits
The IRS has three main types of audits—some being more painful than others.

Correspondence audit: The most common IRS audit, this typically is conducted by mail and sent for reasons such as missing information, small balances owed, or identity verification. (Note: Be aware that scammers have been sending fraudulent letters to collect funds from unsuspecting taxpayers. Identifying fakes isn't always easy, but typical red flags include demand for immediate payment, threats of jail time, and grammatical errors and misspellings. If you're unsure of a letter's authenticity, you can contact the IRS at 800-829-1040 or visit its website to confirm a letter's legitimacy or report an incident.)
Office audit: In this type of audit, taxpayers receive a written summons to go to an IRS office to meet with an agent. This generally happens with more complex tax returns or if the return has multiple items being questioned.
Field audit: The most comprehensive type of audit, this in-person meeting typically occurs at the taxpayer's business or home to conduct a thorough examination of the return in question. These audits can often last several weeks or even months, depending on the issues being reviewed and the complexity of the tax return.
For every type of audit, the IRS will provide in advance a written request for the specific documents it wants to see.


Non-alcoholic bubbly

We had this at Savio Volpe in Vancouver BC and loved the dry, full-flavored taste amongst a dozen other non-alcoholic bubbly drinks we'd tried. 

Colibrì Spumante is a premium, 0.0% alcohol Italian sparkling wine crafted in the Prosecco style from Friuli-Venezia-Giulia, Italy. Made from 100% organic Glera grapes, this dealcoholized, crisp, and fruity bubbly features fine bubbles with notes of green apple, white flowers, and bright citrus. It is available in white and rosé, offering a sophisticated, dry option for celebrations. 



Monday, February 16, 2026

Which exercise is best for longevity?


Walking, Jogging and Running are better than swimming. 
Your body may benefit most from consistency (how often you move)

This visual comes from long-term research following people for decades, tracking how different types of physical activity relate to overall lifespan.

What it shows is surprisingly simple:

🟢 Moderate movement matters most
Activities like walking, jogging, climbing stairs, and weight training were consistently linked with lower risk of early death.

🟡 Benefits appear early
Most of the longevity gain showed up at low to moderate activity levels. After that, the curve flattened. More wasn't always better.

🔵 Variety helps
People who engaged in multiple types of movement over time tended to do better than those who stuck to just one.

This is observational data
It doesn't prove cause and effect, but it reveals strong, long-term patterns across large populations.


activities requiring higher intensity, coordination, and intermittent bursts of effort may confer additional physiological benefits beyond moderate-intensity exercise alone. Vigorous-intensity exercise provides incremental mortality benefits beyond moderate-intensity activity. Among adults who reported any physical activity, engaging in vigorous activity was associated with 9-13% additional risk reductions for mortality, even after adjusting for total activity volume. 


Take melatonin 3 hours before sleep

Melatonin is a chronobiotic, not a sedative. It doesn't knock you out. It tells your clock it's dark. Taking it 3h before bed produces the largest phase advance. Taking it at bedtime can actually push your clock later.


Most people treat melatonin as a "dimmer switch" when, in fact, melatonin at 0.3 mg and melatonin at 50 mg activate two completely different mechanisms.

Most OTC doses fall in a "dead zone" between them that doesn't take advantage of benefits on either side of the curve.

Why office chairs have 5 legs - a trade-off

An interesting deep-dive on how the office chair was optimized over time, including physics formulas and interviews with the designer of the most popular office chair ever. 


2:39 increasing the number of legs increases how far off-center your weight can be before it tips; but 4:07 going from 3 to 4 legs adds 33% more construction material for 41% more stability - more legs becomes a diminishing trade-off. 

With 4 legs, when on an uneven surface, 6:22 your center of mass sits right on the edge of 2 stable positions, rocking between each. With 5 legs, the tipping-point to another stable position is further away from the center of gravity. 

Interesting aside - factories that made nitroglycerin had one-legged stools so workers wouldn't fall asleep. 

Wednesday, February 11, 2026

You buy a car and suddenly notice everyone with that same car - Frequency illusion

https://en.wikipedia.org/wiki/Frequency_illusion

The frequency illusion (also known as the Baader–Meinhof phenomenon) is a cognitive bias in which a person notices a specific concept, word, or product more frequently after recently becoming aware of it.

Riptide illustrated with green dye

The best way to cook bacon


4:43 Add a 1/4 cup of water then spread strips across pan. Water allows even, gentle heating and prevents the parts that touch the skillet surface from burning. 
To cook more bacon, add 1 cup of water and add an entire package of bacon in the skillet crossways; it'll take 20 minutes to start simmering, but then you stir the tangled mixture to promote even cooking. Eventually it starts frying. 


Cook bacon by sound, kind of like cooking popcorn. And by watching the bubbles - 3:02 when the bubbles are 1/8 of an inch it's chewy; 3:18 when they're so small they look foamy, it's crispy. 

8:37 When you need to make a lot of bacon, use a cooking sheet in a 400-degree oven, turning the pan after 5 minutes of the 12-minute cooking time. 


Monday, February 9, 2026

Periodontal disease linked to Alzheimer's

Open Evidence summary:
Periodontal disease is associated with an increased risk of both cognitive decline and dementia, with meta-analyses showing odds ratios of approximately 1.2-1.4 for dementia and similar estimates for cognitive impairment.[1-2] However, the overall quality of evidence is low to moderate, with significant heterogeneity across studies and concerns about reverse causality limiting firm causal conclusions.[1-2]

Strength of Association
The association between poor periodontal health and dementia appears consistent across multiple systematic reviews. Tooth loss independently increases risk for both cognitive decline (OR = 1.23) and dementia (HR = 1.13), with complete tooth loss particularly associated with dementia (HR = 1.23).[1] For Alzheimer's disease specifically, odds ratios range from 3 to 5 in some analyses, though other meta-analyses report more modest associations (OR = 1.03).[2-3] A large Korean cohort study found that periodontal disease (adjusted HR = 1.07), dental caries (aHR = 1.03), and 8-14 missing teeth (aHR = 1.07) were each independently associated with increased dementia risk.[4]

Improved oral hygiene care may modify dementia risk. Professional dental cleaning and frequent tooth brushing (≥2 times daily) were each associated with reduced dementia risk (aHR = 0.91 and 0.83, respectively), and these interventions appeared to attenuate the increased risk from periodontal disease.[4]

Proposed Mechanisms
Three primary pathways have been hypothesized to explain the periodontal-dementia connection:[3][5]

Inflammatory cascade pathway: Pro-inflammatory cytokines (IL-1β, TNF-α) from periodontal lesions trigger neuroinflammation, leading to tau hyperphosphorylation, amyloid-β accumulation, and blood-brain barrier disruption[5-6]

Microbial involvement pathway: Periodontal pathogens, particularly Porphyromonas gingivalis, can enter the bloodstream or travel via the trigeminal nerve to reach the brain. Gingipain proteases from P. gingivalis have been detected in brain tissue and colocalized with AD pathological lesions[3][7]

Cellular pathway: Direct bacterial invasion activates microglia and contributes to neurotoxicity[3]

Treponema denticola may induce tau hyperphosphorylation and neuronal apoptosis, while bacterial lipopolysaccharides serve as inflammatory mediators affecting brain function.[8]

Clinical Guidelines and Recommendations
No formal clinical practice guidelines currently recommend periodontal screening or treatment specifically for dementia prevention. The American Heart Association's 2025 scientific statement on periodontal disease and cardiovascular disease notes that periodontal disease is associated with increased risk of dementia and cognitive impairment, but does not provide specific recommendations for dementia prevention.[9]

The bidirectional nature of the relationship complicates intervention strategies―cognitive decline may lead to poor oral hygiene, which worsens periodontal disease.[3][5] Despite biological plausibility and epidemiological associations, clinical trials of gingipain inhibitors in patients with mild-to-moderate AD showed no impact on cognition, highlighting the need for further research before therapeutic recommendations can be made.[7]

Future well-designed longitudinal studies with standardized periodontal and cognitive assessments are needed to establish causality and determine whether periodontal interventions can effectively prevent or slow cognitive decline.[1][10]

1 Periodontal health, cognitive decline, and dementia: A systematic review and meta-analysis of longitudinal studies. 

2. Is Periodontitis Associated With Age-Related Cognitive Impairment? The Systematic Review, Confounders Assessment and Meta-Analysis of Clinical Studies. https://pubmed.ncbi.nlm.nih.gov/36499656/ 

3. Periodontitis: A Plausible Modifiable Risk Factor for Neurodegenerative Diseases? A Comprehensive Review. https://pubmed.ncbi.nlm.nih.gov/38674088/ 

4. Association Between Dental Diseases and Oral Hygiene Care and the Risk of Dementia: A Retrospective Cohort Study.

5. Pathophysiological Insights Into the Oral-Brain Axis: Evidence-Based Mechanisms Connecting Periodontitis and Alzheimer's Disease. https://pubmed.ncbi.nlm.nih.gov/41416492/ 

6. Association Between Periodontal Disease and Cognitive Impairment in Adults. https://pubmed.ncbi.nlm.nih.gov/36981618/
7. The Role of the Oral Microbiome, Host Response, and Periodontal Disease Treatment in Alzheimer's Disease: A Primer. https://pubmed.ncbi.nlm.nih.gov/40495582/ 

8. Recent Aspects of Periodontitis and Alzheimer's Disease-a Narrative Review. https://pubmed.ncbi.nlm.nih.gov/38473858/ 

9. Periodontal Disease and Atherosclerotic Cardiovascular Disease: A Scientific Statement From the American Heart Association. https://www.ahajournals.org/doi/10.1161/CIR.0000000000001390 

10 Association Between Periodontal Disease and Alzheimer's Disease: A Scoping Review. https://pubmed.ncbi.nlm.nih.gov/41170438/

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