We should have worried about things other than climate change

Wednesday, March 11th, 2020

The Covid-19 coronavirus is indeed a wolf, Matt Ridley (The Rational Optimist) argues:

In Aesop’s fable about the boy who cried “Wolf!”, the point of the tale is that eventually there was a wolf, but the boy was not believed because he had given too many false alarms. In my view, the Covid-19 coronavirus is indeed a wolf, or at least has the potential to be one. Many people, including President Trump, think we are over-reacting, because so many past scares have been exaggerated. I think that’s wrong.

Coming from you, a friend said to me the other day, that’s scary. I am known as an obsessive and serial debunker of false alarms. I have been at it for almost 40 years ever since I realised as a science journalist in the 1980s that acid rain was being wildly overblown as a threat to forests (I was right). This scepticism has served me well. I did not believe that mad cow disease would kill hundreds of thousands of people, as some “experts” were claiming in the mid 1990s. In the end just 177 died. Likewise, I refused to panic over bird flu, swine flu, SARS or ebola.

I set out to debunk exaggerated claims about the population explosion, peak oil and peak gas, nuclear winter, the ozone hole, pesticides, species extinction rates, genetically modified crops, sperm counts, ocean acidification and the millennium bug. In every case this made me unpopular and unfashionable, but close to the truth. I said climate change would happen more slowly and with less impact on storms, floods, droughts, sea ice and sea level than even some experts were claiming in the 1990s, let alone the extreme environmentalists, and it has.

It is very easy, in other words, to bet on the tendency of journalists and their readers to engage in a competitive auction of unjustified alarm. “The whole aim of practical politics,” said H.L. Mencken, “is to keep the populace alarmed (and hence clamorous to be led to safety) by an endless series of hobgoblins, most of them imaginary.” And no, the fact that the millennium bug was a damp squib was not because we were well prepared; some countries and industries did nothing and were still fine.

So why don’t I think this hobgoblin is imaginary? First, because lethal plagues have a long track record. From the plague of Justinian to the Black Death to the Spanish flu of 1918 to the HIV epidemic, new diseases have proved they can burn through the human population with frightening efficiency. It’s true we have got better at eradicating infectious diseases through vaccinations, pills and public health, but most viruses are still very hard to cure and some are very easy to catch.

The second reason is that new diseases are often more dangerous than existing ones and this one has jumped from bats, possibly via pangolins. In the past respiratory viruses have generally proved to be low in virulence once they become highly contagious: hence the large number of rhinovirus, adenovirus and coronavirus strains that we call collectively, “the common cold”. Even flu has been relatively less lethal since the special wartime conditions of 1918. But when they first infect our species, viruses can encounter a vulnerable immune system and run riot.

The third reason for alarm in this case is the speed with which Covid-19 has crossed regional and international boundaries. It does seem to have acquired an unusual skill at getting passed on from one person to another, usually not making them so sick that they stay away from meeting other people, which is what prevents ebola causing pandemics, but yet being capable of killing about 1% of people it infects. This is the frightening combination of traits that we have feared might one day arise.

Then there is the effect of globalisation, and the huge growth in international travel. I wrote in my notes in 1996, when reviewing a book on new viruses, “If we persist in creating conditions in which viruses can be easily transmitted and amplified, then we will persist in experiencing waves of new viral epidemics. The problem lies in the ecology of our society, not destruction of the environment.” Human beings are just too tempting an ecosystem for an ambitious virus.

But we have indeed cried wolf over so many issues, that it has contributed to us being underprepared. We should have seen that globalisation would cause such a risk to grow ever larger and taken action to prevent a new virus appearing. We should have worried about things other than climate change.

When a difference really is environmental in origin, it’s easy to prove it

Sunday, March 8th, 2020

Human Diversity by Charles MurrayCharles Murray presents (in Human Diversity) Murray’s Conjecture:

When a difference really is environmental in origin, it’s easy to prove it; when it’s hard to prove an environmental cause, it’s because the role of the environment is minor.

Trekkers with the biggest lungs, the biggest spleens, and the biggest reduction in heart rate during a breath-hold were the least likely to develop symptoms of acute mountain sickness

Sunday, March 8th, 2020

Ever since reading James Nestor’s 2014 book Deep, Alex Hutchinson has been fascinated by the scarcely believable feats of freedivers:

Plunging 335 feet below the surface of the ocean and making it back on a single breath, or simply holding your breath for 11 minutes and 35 seconds, clearly requires a very special set of skills and traits.

But until a recent conference talk, I’d never considered whether those same characteristics might be useful in other settings where oxygen is scarce — such as the thin air of high-altitude trekking and mountaineering.

[...]

Schagatay’s initial research interest was in what she calls “professional” freedivers, as opposed to recreational or competitive freedivers.

[...]

These diving populations, Schagatay and others have found, share three distinctive characteristics with successful competitive freedivers, who take part in contests around the world sanctioned by AIDA, the international freediving authority:

Big lungs: In one study of 14 world championship freedivers, vital capacity — the maximal amount of air you can expel from your lungs — was correlated with their competition scores. The three best divers in the group had an average vital capacity of 7.9 liters, while the three worst averaged just 6.7 liters. And it’s not just genetic: Schagatay found that an 11-week program of stretching increased lung volume by nearly half a liter.

Lots of red blood cells: Divers do tend to have higher levels of hemoglobin, the component of red blood cells that carries oxygen. That’s probably a direct result of their diving. Even if you just do a series of 15 breath holds, you’ll have a surge of natural EPO an hour later, which triggers red blood cell formation.

But there’s a more direct and immediate way of boosting your red blood cell count: squeezing your spleen, which can store about 300 milliliters of concentrated red blood cells. Seals, who are among the animal kingdom’s most impressive divers, actually store about half their red blood cells in their spleens, so they don’t waste energy pumping all that extra blood around when it’s not needed. When you hold your breath (or even just do a hard workout), your spleen contracts and sends extra oxygen-rich blood into circulation. Not surprisingly, spleen size is correlated with freediving performance.

A robust “mammalian diving response”: When you hold your breath, your heart rate drops by about 10 percent, on average. Submerge your face in water, and it will drop by about 20 percent. Your peripheral blood vessels will also constrict, shunting precious oxygen to the brain and heart. Together, these oxygen-conserving reflexes are known as the mammalian diving response — and once again, the strength of this response is correlated with competitive diving performance.

[...]

In a study published last year, they followed 18 trekkers to Everest Base Camp at 17,500 feet (5,360 meters). Sure enough, the trekkers with the biggest lungs, the biggest spleens, and the biggest reduction in heart rate during a breath-hold were the least likely to develop symptoms of acute mountain sickness.

The size of the spleen isn’t the only thing that matters — its benefits depend on a strong squeezing response to get all the red blood cells out. In a 2014 study of eight Everest summiters, they found that three repeated breath holds prior to the ascent caused spleen volume to squeeze, on average, from 213 milliliters to 184 milliliters. After the ascent, the same three breath holds caused the spleen to squeeze down to 132 milliliters. Prolonged exposure to altitude had strengthened the spleen’s diving response. In fact, there’s also evidence that simply arriving at moderate altitude will cause a sustained mild spleen contraction, as your body struggles to cope with the oxygen-poor air.

Conscientiousness consistently played the most important role

Saturday, March 7th, 2020

Human Diversity by Charles MurrayOf the Big Five traits, conscientiousness consistently played the most important role in academic and professional success, Charles Murray explains (in Human Diversity: The Biology of Gender, Race, and Class), with openness in second place:

Poropat reported effect sizes for them of +1.14 and +0.96 respectively, far larger than those for agreeableness (+0.19), emotional stability (+0.36), or extraversion (+0.23). In addition to its value for academic performance, conscientiousness has also been found to predict job performance, salary, promotion, and occupational prestige. These findings make sense.

IQ score is a better predictor of job performance than a résumé, evaluation through a job interview, assessment centers, or work samples

Friday, March 6th, 2020

Human Diversity by Charles MurrayOne of the most common assertions about IQ, Charles Murray reminds us (in Human Diversity: The Biology of Gender, Race, and Class), is that it doesn’t predict performance in the real world of work:

The truth is the opposite. It’s not just that IQ predicts job performance for people with cognitively demanding jobs; IQ predicts job performance to some degree for people across the entire range of jobs. People who are responsible for new hires at a workplace should know that an IQ score is a better predictor of job performance than a résumé, evaluation through a job interview, assessment centers, or work samples.

She took 55 milligrams of what she believed was cocaine

Friday, March 6th, 2020

A woman contracted Lyme disease in her early 20s. It damaged her feet and ankles and left her in significant pain, which she treated with morphine — until, decades later, she tried another pharmaceutical:

In September 2015, she took 55 milligrams of what she believed was cocaine but was actually “pure LSD in powder form.”

The authors defined a normal recreational dose as 100 micrograms — equal to 0.1 milligrams.

The woman blacked out and vomited frequently for the next 12 hours but reported feeling “pleasantly high” for the 12 hours after that — still vomiting, but less often.

According to her roommate, she sat mostly still in a chair, either with her eyes open or rolled back, occasionally speaking random words. Ten hours later she was able to hold a conversation and “seemed coherent.”

Her foot pain was gone the next day and she stopped using morphine for five days. While the pain returned, she was able to control it with a lower dose of morphine and a microdose of LCD every three days. After more than two years, in January 2018, she stopped using both morphine and LSD and reported no withdrawal symptoms, although the case report said she did experience an increase in anxiety, depression and social withdrawal.

The case studies were compiled by Mark Haden, executive director of Canada’s Multidisciplinary Association for Psychedelic Studies and an adjunct professor at the University of British Colombia School of Population and Public Health, and Birgitta Woods, a psychiatrist in Vancouver..

They noted that in CB’s case “ingestion of 550 times the normal recreational dosage of LSD was not fatal and had positive effects on pain levels and subsequent morphine withdrawal.”

The authors note in the study that no lethal doses of LSD have been documented, although they said scientists have estimated that a lethal dose in humans would be 14,000 mcg.

All human behavioral traits are heritable

Thursday, March 5th, 2020

Human Diversity by Charles MurrayBehavior geneticist Eric Turkheimer set out three laws of behavior genetics, Charles Murray reminds us (in Human Diversity: The Biology of Gender, Race, and Class):

First law: All human behavioral traits are heritable.
Second law: The effect of being raised in the same family is smaller than the effect of genes.
Third law: A substantial portion of the variation in complex human behavioral traits is not accounted for by the effects of genes or families.

Murray adds some related findings:

Whether the topic was a Big Five characteristic such as extraversion or neuroticism or more specific characteristics such as tolerance, sense of well-being, or alienation, twin studies of heritability kept coming up with correlations for MZ twins that were more than twice the correlations for DZ twins, leaving no role for the shared environment.

[...]

The literature on shared environment, nonshared environment, and heritability tells us that a family’s SES (income, parental education and occupation) is unimportant in explaining the cognitive abilities and personality traits that parents try hardest to promote.

[...]

The bulk of the variance in success in life is unexplained by either nature or nurture. Researchers are lucky if they explain half of the variance in educational attainment with measures of abilities and socioeconomic background. They’re lucky if they can explain even a quarter of the variance in earned income with such measures. The takeaway for thinking about our futures as individuals is that we do not live in a deterministic world ruled by either genes or social background, let alone by race or gender.

Salamanders and other amphibians glow green when bathed in blue light

Thursday, March 5th, 2020

Salamanders and other amphibians glow green when bathed in blue light:

Amphibians fluoresce green to yellow in response to blue (440–460?nm) (Figs. 1 and 2) and ultra-violet excitation light (360–380?nm) (Supplementary Fig. 2), but the biofluorescent light emitted under blue excitation is more intense than when excited by ultra-violet light (Supplementary Fig. 2). Fluorescent green coloration in response to blue excitation light is strikingly widespread across the amphibian radiation (Figs. 1 and 2) and is the focus of this survey. Every amphibian species and life stage we examined, including aquatic larvae, is biofluorescent (Supplementary Table 1). Peak fluorescent emissions coming from these amphibians (Fig. 2) fall within the spectrum of green light (ca. 520–560?nm). The intensities of fluorescent light we recorded were variable among taxa (Figs. 1 and 2) and weakest for those that lacked bright or reflective pigments (i.e., yellows, oranges, whites).

Salamanders and other amphibians are aglow with biofluorescence 1

In the real world, assortative mating is routine

Wednesday, March 4th, 2020

The third part of Human Diversity: The Biology of Gender, Race, and Class, the part about class, naturally addresses assortative mating:

In the real world, assortative mating is routine. At least when it comes to marriage, people tend to marry others who are similar on a wide variety of traits. The empirical reality of that statement has been established for a long time, beginning with Steven Vandenberg’s review of the early literature in 1972.

Since then, extensive additional research has documented assortative mating for education, intelligence, political affiliation, mental illness, substance abuse, aggressive behavior, and criminal behavior. Often these correlations are substantial, in the region of +.4 to +.5.

Getting there six days early helps

Wednesday, March 4th, 2020

Endure by Alex HutchinsonThere are no shortcuts to feeling good at altitude, Alex Hutchinson (Endure) finds, as he summarizes a recent study:

One of the most pressing questions for people slotting mountain adventures into precious vacation is how much time they need to allot to acclimatization. Will arriving a day or two early make an appreciable difference to their performance and health? This is also, as it turns out, a crucial question for military personnel being deployed on mountain missions where they need to quite literally hit the ground running. Optimizing that calculation is the motivation for a new study from researchers led by Robert Kenefick at the U.S. Army Research Institute of Environmental Medicine, in Natick, Massachusetts, published in the journal Medicine & Science in Sports & Exercise.

The question the new study asks is: if you’re headed to 14,000 feet (4,300 meters) and need to perform well right away, is it worth trying to get there (or partway there) two days early? Specifically, the researchers had 66 volunteers complete a series of tests, including a 5-mile time trial on a treadmill set at 3 percent grade, at the altitude research lab on the summit of Pikes Peak in Colorado. For the two days prior to the tests, the subjects were split into four groups who either camped in Pikes Peak National Forest at 8,200 feet, 9,800 feet, or 11,500 feet, or stayed at the research station at 14,000 feet. A previous study from the same group had found that spending six days at 7,200 feet did significantly improve performance after a rapid ascent to 14,000 feet, an approach known as staging. But who’s got six extra vacation days? The goal this time was to do it faster by going higher.

There was one other variable the researchers threw in. Exercising at altitude puts your oxygen-starved body in even greater stress, so adding some workouts during your acclimatization period might serve as an additional adaptive stimulus.

[...]

The result of all these machinations? A big fat nothing. All eight of the subgroups produced essentially identical results in the final testing at 14,000 feet.

[...]

But if we have to extract some general rules of thumb for mountain adventures from this body of research, I’d go with: getting there six days early helps; getting there two days early doesn’t; and, since we don’t yet know what happens between days two and six, you should err on the safe side and lobby for more vacation days.

A simple test to identify who can override an intuitive and wrong answer

Monday, March 2nd, 2020

Before Rationality gained a capital letter and a community, a psychologist developed a simple test to identify people who can override an intuitive and wrong answer with a reflective and correct one:

One of the questions is:

In a lake, there is a patch of lily pads. Every day, the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long would it take for the patch to cover half of the lake?

Exponential growth is hard for people to grasp. Most people answer ’24’ to the above question, or something random like ’35’. It’s counter-intuitive to people that the lily pads could be barely noticeable on day 44 and yet completely cover the lake on day 48.

Here’s another question, see if you can get it:

In an interconnected world, cases of a disease outside the country of origin are doubling every 5 days. The pace is slightly accelerating since it’s easier to contain a hundred sick people than it is to contain thousands. How much of a moron do you have to be as a journalist to quote statistics about the yearly toll of seasonal flu given a month of exponential global growth of a disease with 20 times the mortality rate?

Human intuition is bad at dealing with exponential growth but it’s very good at one thing: not looking weird in front of your peers. It’s so good at this, in fact, that the desire to not look weird will override most incentives.

Journalists would rather miss out on the biggest story of the decade than stick their neck out with an alarmist article. Traders would rather miss out on billions of dollars of profits. People would rather get sick than do something that isn’t socially sanctioned.

Even today (2/26/2020), most people I’ve spoken to refuse to do minimal prep for what could be the worst pandemic in a century. It costs $100 to stock up your house with a month’s worth of dry food and disinfectant wipes (respirators, however, are now sold out or going for 4x the price). People keep waiting for the government to do something, even though the government has proven its incompetence in this area several times over.

Farmers would do better to plant crops the way crops want to grow

Sunday, March 1st, 2020

Vegetarian-agnostic-feminist Lauren Groff was understandably more drawn to the hippie homesteading sessions at Prepper Camp than to the paranoid militaristic ones:

I couldn’t understand how tracking protests against police violence from a tent somewhere had anything to do with prepping. But I regained some sense of my enthusiasm by proceeding to classes on permaculture, which I believe in deeply. Industrial agriculture is poisoning the planet and our bodies; we’re all better off growing as much of our own food as possible. Our host, Rick Austin, sweating through his khaki shirt in a circle from shoulder to sternum, gave such a thrilling talk about “Secret Gardens and Greenhouses” that I bought his book, Secret Garden of Survival, at the prepper mall afterward. Austin had been a commercial farmer, growing apples in New Hampshire and oranges in Florida, when he realized that agriculture’s traditional rows of plants were not designed for the plants’ sake, but for the sake of the machinery that sows and harvests it; in a post-doomsday world without heavy machinery, and with smaller-scale, nonindustrial agriculture, farmers would do better to plant crops the way crops want to grow.

Austin showed pictures of the evolution of a garden on his mountainside homestead, first stripped to the topsoil, then planted in “guilds” of fruit or nut trees surrounded by symbiotic plantings of berries and vines and useful nitrogen fixers. The result within only a few years was a garden so lush and productive it now doesn’t look like a garden, doesn’t need weeding, watering, pesticides, or nutrients, and provides many pounds of food per square foot.

[...]

I ate in my tent, and with my hand-crank flashlight, I read Rick Austin’s book. It didn’t take more than twenty minutes; I finished pretty bummed out that I had spent $35 on the thing. Though it contains some good ideas, it suffers the lack of editorial attention typical of self-published works, offering only the vaguest recommendations, with eccentric punctuation and terrible photography, and it included the only instance of overt racism (putting aside the MAGA gear and Confederate flags) that I saw all weekend: a photo of the “zombie hordes” that Rick Austin believes will be swarming the land and stealing his food during the apocalypse, credited to the Associated Press, actually depicts desperate brown people wading with their children to dry land.

He has a website and YouTube channel:

Most people need social approval to prepare for a widely-reported pandemic

Saturday, February 29th, 2020

COVID-19 could be pretty bad for you, Jacobian of LessWrong reminds us:

But the worst thing that could happen is that you’re seen doing something about the coronavirus before you’re given permission to.

I’ll defend this statement in a minute, but first of all: I am now giving you permission to do something about COVID-19. You have permission to read up on the symptoms of the disease and how it spreads. Educate yourself on the best ways to avoid it. Stock up on obvious essentials such as food, water, soap, and medicine, as well as less obvious things like oxygen saturation monitors so you know if you need emergency care once you’re sick. You should decide ahead of time what your triggers are for changing your routines or turtling up at home.

In fact, you should go do all those things before reading the rest of the post. I am not going to provide any more factual justifications for preparing. If you’ve been following the news and doing the research, you can decide for yourself. And if instead of factual justifications you’ve been following the cues of people around you to decide when it’s socially acceptable to prep for a pandemic, then all you need to know is that I’ve already put my reputation on the line as a coronaprepper.

Instead this post is about the strange fact that most people need social approval to prepare for a widely-reported pandemic.

As Eliezer reminded us, most people sitting alone in a room will quickly get out if it starts filling up with smoke. But if two other people in the room seem unperturbed, almost everyone will stay put. That is the result of a famous experiment from the 1960s and its replications — people will sit and nervously look around at their peers for 20 minutes even as thick smoke starts obscuring their vision.

The coronavirus was identified on January 7th and spread outside China by the 13th. American media ran some stories about how you should worry more about the seasonal flu. The markets didn’t budge. Rationalist Twitter started tweeting excitedly about R0 and supply chains.

Over the next two weeks, Chinese COVID cases kept climbing at 60%/day reaching 17,000 by February 2nd. Cases were confirmed in Europe and the US. The WHO declared a global emergency. The former FDA commissioner explained why a law technicality made it illegal for US hospitals to test people for coronavirus, implying that we would have no idea how many Americans have contracted the disease. Everyone mostly ignored him including all major media publications, and equity markets hit an all time high. By this point several Rationalists in Silicon Valley and elsewhere started seriously prepping for a pandemic and canceling large social gatherings.

On the 13th, Vox published a story mocking people in Silicon Valley for worrying about COVID-19. The article contained multiple factual mistakes about the virus and the opinions of public health experts.

On February 17th, Eliezer asked how markets should react to an obvious looming pandemic. Most people agreed that the markets should freak out and aren’t. Most people decided to trust the markets over their own judgment. As an avowed efficient marketeer who hasn’t made an active stock trade in a decade, I started at that Tweet for a long time. I stared at it some more. Then I went ahead and sold 10% of the stocks I owned and started buying respirators and beans.

By the 21st, the pandemic and its concomitant shortages hit everywhere from Iran to Italy while in the US thousands of people were asked to self-quarantine. Most elected officials in the US seemed utterly unaware that anything was happening. CNN ran a front page story about the real enemies being racism and the seasonal flu.

How useful in this particular crisis is decelerationism?

Saturday, February 29th, 2020

Donald G. McNeil Jr. of the New York Times recommends “going medieval” on coronavirus:

There are two ways to fight epidemics: the medieval and the modern.

The modern way is to surrender to the power of the pathogens: Acknowledge that they are unstoppable and to try to soften the blow with 20th-century inventions, including new vaccines, antibiotics, hospital ventilators and thermal cameras searching for people with fevers.

The medieval way, inherited from the era of the Black Death, is brutal: Close the borders, quarantine the ships, pen terrified citizens up inside their poisoned cities.

For the first time in more than a century, the world has chosen to confront a new and terrifying virus with the iron fist instead of the latex glove.

At least for a while, it worked, and it might still serve a purpose.

The Chinese leader, Xi Jinping, was able to seal off the city of Wuhan, where the Covid-19 outbreak began, because China is a place where a leader can ask himself, “What would Mao do?” and just do it. The bureaucracy will comply, right down to the neighborhood committees that bar anyone returning from Wuhan from entering their own homes, even if it means sleeping in the streets.

The White House, in defiance of recent American history, also opted to go medieval by aggressive measures like barring entry to non-Americans who were recently in China and advising Americans not to go to China or South Korea.

[...]

This has led to much consternation among other public health experts, who argue that travel restrictions can cause more panic, misery and death than they prevent. Crowds may besiege hospitals, supercharging the infection rate. Closed borders can cut off vital medications like insulin. Factory and shop closings mean lost wages, hardships and possibly recession.

Also, quarantines feed racism and stigma.

Officially, the World Health Organization opposes travel and trade restrictions. It reiterated that even as it declared the epidemic a global emergency on Jan. 30.

But it now admits that they helped.

He tells a similar story of AIDS in New York City versus Cuba:

Meanwhile, the United States took a pro-legal-rights approach. Even offering an H.I.V. test was made illegal without a separate counseling session, which scared many away from testing. Although gay bathhouses were epicenters of transmission, there were long divisive fights over closing them.

After triple therapy was developed in the mid-1990s, most Cuban camps closed.

But the difference in lives saved by choosing brutality over freedom was stark: Cuba’s H.I.V. infection rate was for decades about one-sixth that of the American one. New York City and Cuba have roughly the same population. In the epidemic’s first 30 years, fewer than 2,500 Cubans died of AIDS. Over 78,000 New Yorkers — mostly gay men — did.

Steve Sailer asks, how useful in this particular crisis is decelerationism?

The respectable opinion has mostly been that it is inevitable that the infection gets into the United States so we should just keep the globalization pedal to the metal, because in the long run we’re all dead so whaddaya whaddaya?

My natural instinct, in contrast, is to try to decelerate, to spread the bad effects out longer. For example, we’ve got about a million hospital beds in this country, with a large fraction already in use every day. If the hospitals overflow, then things get very bad.

There are also reasons to be optimistic about next year or the year after for getting a vaccine.

But how much good can decelerationism do? I don’t really know, but we ought to be discussing the question of accelerationism vs. decelerationism.

Freeman Dyson appeared for more esoteric topics

Friday, February 28th, 2020

Freeman Dyson just passed away at the age of 96. He was known for his work in quantum electrodynamics, solid-state physics, astronomy and nuclear engineering — but he appeared here for more esoteric topics, like the Serbian crisis of 1914, Littlewood’s Law of Miracles, religion and public education, global warming, his time in the Operational Research Section (ORS) of the British Royal Air Force’s Bomber Command, firestorms, ripping out gun turrets, drums that talk, the other telegraph, heat death, Project Orion, the illusion of validity, building the H Bomb, the most wanted man in China, starship research, aircraft survivability, the origin of Blue Origin, and Gwern’s proposal for an archive revisiter.