Posts in: science

Tuesday links, academic deep dives

A marvelous overview of various pitfalls in thinking which I will have to read again and with great care to fully understand. As is often the case, the concluding paragraph gives one a good idea of the flavor of the whole text:

At the least, the difficulties of understanding should make all scientists both skeptical and humble, knowing that ‘truth’ is an ever receding goal. We must realize the full range of possible illusions and appreciate that they occur in all approaches. We can reduce false insights and achieve better understanding by embracing diverse theoretical perspectives, research methods, and modes of analysis. This requires constant intellectual humility towards our own theories, models and methods. This recommendation unfortunately competes with forces in scientific societies that foster overstated claims and conclusions: Faced with millions of publications each year, scientists must fight for attention, readers and citations in the research marketplace, and journal editors must seek impact factors, submissions, and readers. In addition, scientists’ beliefs in overstated claims are subject to biases that occur more broadly. Thus, scientists can exhibit trust that increases beyond what is justified for mentors, friends, colleagues, same institutions and affiliations, famous scientists at leading universities and research centers, and decreases for women and minority authors. Do scientists realize the extent to which such factors operate and are they adapting to their existence?

The subtitle is “How GLP-1 Development Was Abandoned in 1990”, and it attests to a 30-year delay in bringing these revolutionary drugs to patients, because someone at Pfizer thought they understood what was going on. So the pipeline is even more broken than I thought.

A series of well-referenced historical vignettes whose purpose is to bring tech-adjacent people closer to worldviews other than “the toxic strain of neoliberal capitalism favored by venture capitalists and their gushing fans in the tech media.” But you don’t need to know any of that to enjoy his notes on selfishness, corporate psychopathy or people being human in a crisis, to pick a few recent ones.


Wednesday links, with many uncertainties

Oh but we do, at least superficially: “of 130,000 men who became new fathers between 2017 and 2022, almost 800 died during that same 5-year period, and 60 percent of those deaths were from potentially preventable causes like homicide, accidental injury, and suicide” which is about what you would expect for a group of men that skews younger. The authors of the paper make a comparison between fathers who died and those that survived but a more interesting one would have been a demographically matched of childless men. Alas, all we have is all the men in Georgia and lo, for each age range the new fathers have a lower mortality and the discussion appropriately leads with “Fatherhood appeared to be associated with reduced mortality.“ [Note: Another reason to have more children. Though, if you are going to do it solely because of a misguided belief that you yourself would live longer, then perhaps don’t? ] Methinks French — or her headline writer — were fooled by randomness.

Vepdegestrant for breast cancer seems to be another entry in the annals of approved drugs being considered failures by Mr. Market. Let it be noted that a chemist (Lowe) writing for a prestigious peer-reviewed journal (Science) dunks on a drug while citing millions and billions of dollars exchanged or promised to various stakeholders while barely mentioning, and wrongly at that, the actual trial results. “It did not really demonstrate any advantage versus the comparison in the trial, fulvestrant” is factually incorrect: median progression free survival was 5 versus 2.1 months, which, fine, is tiny and may have been the result of statistical shenanigans; but it may also be a true and meaningful incremental improvement and if we are going to dismiss it out of hand then what are we even doing here? The rot runs deep.

It is a genuine mystery of why a mostly agrarian functional democracy with no separatist movements, demographic catastrophes, curses of resource wealth and the other usual suspects of stalled growth should completely flatline their GDP. Mousa shows compelling data and many hypotheses, though I wonder whether there is something that isn’t and can’t be measured which is keeping the country where it is. And if you are thinking that oh, GDP can’t measure happiness, I bet that at least they are happy, think again: it was the 4th least happy country last year. But then the “Happiness Report” methodology takes GDP into account (!?) so it is almost impossible for a GDP-poor country to break through in the rankings.

This is about slides shared via email, never meant to be presented, but rather serving as a landscape-oriented picture book for adults. I don’t know what is behind communication-by-slide, and as a seminar-attending Tufte acolyte I abhor it. Management consultants spreading them around like a viral respiratory disease — which is the thesis of the blog post — certainly has something to do with it, but the syndrome is now bottom-up as well. My third-grader asked me just this morning why they were forced to watch and make (!?) slides at school.


Medical links, Good, Bad and Ugly

The good: How an ‘Impossible’ Idea Led to a Pancreatic Cancer Breakthrough by Gina Kolata and Rebecca Robbins for The New York Times. The breakthrough discussed is the real deal, and they manage to do it in a measured tone which correctly identifies daraxonrasib as a stepping stone and not a miracle cure. It has this important note up top and not buried down at the end:

The pills, three taken daily, are not a cure — eventually, daraxonrasib stops working. Many patients do not respond. And it has side effects that can be harsh, including rash, diarrhea, fatigue, nausea and raw, split fingertips.

How refreshing — I hope Derek Thompson takes note.

The bad: The Human Body’s Hidden Pathways by Dr. Avraham Z. Cooper, who is a pulmonary/critical care physician at the Ohio State University, for The New York Times Magazine. For the life of me I can not figure out the point of this post-modern journalistic exercise.

Nominally it is about a peer-reviewed research article which came out in 2021 under the title “Evidence for continuity of interstitial spaces across tissue and organ boundaries in humans”. The NYT Magazine staff did not deem it worthy of being linked to, but here it is in its entirety. In it, the authors showed small fragments of tattoo pigment migrating into tissues — skin and colon — deeper than they expected. We are not talking about ink being injected into a bicep and showing up in someone’s rectum here, but rather a series of biopsies of tattooed skin or the lining of the colon where there is a lot of pigment up top, and much less and in smaller pieces down at the bottom of the slide, deeper in the tissue.

Let me pull out my rarely used master’s degree in histology and note that this is hardly surprising. Connections between cells are not exactly air-tight — other than maybe in the brain and the testes — so of course there is some gel-like fluid circulating in the space. Or did the original article’s authors not realize why people tend to rub their feet when they get swollen?

But that is only the introduction. The meat of the article is Dr. Cooper’s theoretizing that this has something to do with — drumroll, please — acupuncture. With no evidence, mind you, but a tingling sensation in the back of his neck or somesuch. By the time the 30th single-sentence screen scrolls by we are firmly in bullshit territory, in the formal sense of the word. Caveat lector.

The ugly: Longevity Medicine - An evidence based guide by Dr. Vinay Prasad who is out of the FDA and back making YouTube videos. And oh my, the contrast between the most recent thumbnail and the one posted just before he joined the FDA is striking. Has it only been a year? No wonder that his first topic back as an influencer is about longevity.

A sidenote here which I will put at the end: the increased interest of Silicon Valley types with longevity, and I am not thinking only about Bryan Johnson’s delusions here, reminds me of the recently quoted speech Charlie Chaplin gave at the end of The Great Dictator, the relevant quote being that “so long as men die, liberty will never perish.” Good for us that snake oil salesmen are still the longevity field’s most prevalent phenotype.


This week in hubris

What possessed me to type x.com into the address bar I can tell you not, but there I was, staring for the first time in weeks at the “For you” tab. And there it was, in all capital letters: “THIS IS HOW WE CURE PANCREATIC CANCER”, staring back.

That was the X-crement of one Derek Thompson, writer for The Atlantic, podcaster, abundance enthusiast. It was promoting his most recent blog post which, being on Substack rather than X, had a more subdued name: “How AI Could Help Cure Pancreatic Cancer”. It is, supposedly, an interview with a co-author of a paper with an ever-less-so boastful name: “Next-generation AI for visually occult pancreatic cancer detection in a low-prevalence setting with longitudinal stability and multi-institutional generalisability”. Most of the interview, however, is behind a paywall which I shall not climb.

Above the fold is Thompson’s exuberant, hyperoptimistic speculation. He approaches the problem from the perspective of the three recent developments — one from above, the other two previously discussed — but presents the areas which they are “solving”, targeting KRAS mutations, pancreatic cancer’s immune evasiveness, difficulties with early detection, as the sole reasons why the disease is so difficult to treat.

But that is disingenuous. There are so many more reasons why it is hard: the uniquely hostile, acidic, high-pressure environment of the tumor that makes drug delivery to it nigh-impossible. It’s propensity to metastasize — spread to distant organs — no matter what size the original tumor is. A biochemical storm it stirs up in the body leading to rapid weight loss, blood clots and horrendous pain which are distinct even among other cancers. Why not highlight those three as the “3 broad reasons why pancreatic cancer is so hard to treat”, to use Thompson’s terminology? Well, no recent high-profile studies for those, are there?

I understand that he has some personal reasons to be interested in pancreatic cancer, and I am sure it is coming from the best of intentions, but please.


Friday link potpourri

To those who can hear me, I say - do not despair. The misery that is now upon us is but the passing of greed - the bitterness of men who fear the way of human progress. The hate of men will pass, and dictators die, and the power they took from the people will return to the people. And so long as men die, liberty will never perish…

Soldiers! don’t give yourselves to brutes - men who despise you - enslave you - who regiment your lives - tell you what to do - what to think and what to feel! Who drill you - diet you - treat you like cattle, use you as cannon fodder. Don’t give yourselves to these unnatural men - machine men with machine minds and machine hearts! You are not machines! You are not cattle! You are men! You have the love of humanity in your hearts! You don’t hate! Only the unloved hate - the unloved and the unnatural! Soldiers! Don’t fight for slavery! Fight for liberty!

Amen.


Thursday links, Nautilus science edition


Friday links, science-y


"Notes on science and scientism" by Protesilaos

The essay is five years old yet I have discovered it just now because the author is also the person behind Denote, a marvelous note-taking tool for Emacs. The tone is not as dry as a scholastic text [Note: For a Substack version of a similar message I encourage you to check out Experimental History. The most recent post, for example, is a case study of one particular aspect of scientism — zombie ideas. ] but not as entertaining as something one would find on Substack. The message is unambiguous, and rather than rehash it let me quote one paragraph out of many:

Science as a career choice rather than a disposition towards learning, and an attitude of living in accordance with the principles than (sic!) enable such learning, contributes to the distancing from philosophy and to the degradation of the moral character of those involved. The practitioner who has not been in the least exposed to the rigours of a virtuous modus vivendi is likely to prioritise superficialities that obscure their own intellectual insecurities, such as social status, a growing collection of titles and certificates that are supposed to support one’s appeal to intellectuality, or the emptiness of being celebrated as a force for so-called “progress” and “rationality” among those who are believed to be unfortunate enough not to be scientists. The latter is one of those non-scientific beliefs amplified by the oligopoly of mass media that helps the philosophically deprived science stake its claim as the tutelary figure of the contemporary world, while blithely disregarding its instrumentalisation as both the apologist and militant activist of the power apparatus that enables it.

The author, who chose to drop his surname and go just by Protesilaos thereby making me break the house rule of using last names only when referring to folks, lives in a hut he built himself [Note: A hut which brought to mind this recent essay from Joan Westenberg about people retreating from their true calling for years in order to recharge. ] in the mountains of Cyprus. Fascinating stuff, all with a large back catalogue I will be perusing in the months to come.

The last few years have been particularly tricky to tread for people who recognize the difference between science and scientism. If the entire board of the National Science Foundation is fired in one day, is it an attack on science or an attempt to curb scientism? [Note: ¿Por qué no los dos? ] When one of the “Abundance” guys — yes, that book is still on the pile — proposes an unbaked not-even-embryonic scheme for reform, is the rebuke from a seasoned scientist legitimate or just circling the wagons? [Note: Vide supra ] So yes, a retreat to the mountains does sound appealing.


☕ A 3,500-word article on the physics of coffee making is just what I needed today

Thank you, Hacker News, for promoting — if only briefly — this marvel of an article from Physics World (or is it physicsworld?) about the more scientific aspects of the final and most important step of making coffee. Funnily enough, it focused on the two methods I’ve settled on after a couple of decades of tinkering: espresso and pour-over.

Refreshingly, it is not a “well-actually” article that would use theoretical physics and/or laboratory experiments to prove coffee experts wrong. In fact, much e-ink is spent confirming practices that baristas have settled on, including the coffee-to-water ratio, steeping time, pressure used. There were, however, two things that could make me change how I’m doing things.

For espresso, theory says that using less coffee with a coarser grind would — to me, paradoxically — result in equal extraction and coffee tasting the same despite not using as many beans. With the price of coffee rising, this could be a big deal so I will check it out. Although, to me the benefit of a proper espresso is that it allows you to get a tasty liquid out of sub-par solids, so I would never go with the most expensive beans to begin with (ahem). No, the $2/oz bag is reserved for the queen of brewing, which is the pour-over.

And for the pour-over, there is but a single thing I should change: the height from which I pour, which should apparently be far higher than I’m doing now. A pretty diagram shows the reasons why 20cm is the right height from which the stream of hot — 96°C, thank you very much, so you’d better have a temperature-controlled kettle — water onto a coarsely ground pile of dreams. And there is no safe way to do it from that high up without a gooseneck kettle, so add that to your kettle requirements. Sadly, they don’t go into the quality of the filter and the differences between plain paper, Chemex and metal meshes. I am sure there is much physics involved.

Now before you start commenting that good ol’ Folgers in a hotel room drip machine will do for you, thank you very much, let me suggest a few decidedly unfussy methods of coffee making that are infinitely better than drip coffee out of a plastic tub:

  • Aeropress, which used to be the main way I made coffee but abandoned as the family and the number of coffee-drinkers in the house expanded (we are currently at three; five with grandparents visiting).
  • Nescafe Gold, which is probably the best instant coffee you can get and it doesn’t get any less fussy than pouring hot-ish water into a mug.
  • Turkish coffee, with strong preference for Mehmet Efendi which, if not in Istanbul, you can easily get online.
  • Boiling raw beans in DC tap water for about 30 minutes.

Okay, maybe not that last one.


Monday links, in concurrence