You said: We had the Ebola outbreaks, now Hantavirus, marking between them Coronavirus.
We had the Ebola outbreaks, now Hantavirus, marking between them Coronavirus. Evolution continues, more rapidly in the rapidly reproducing organisms that produce infectious disease. Hence it never ends and a threat persists of a highly virulent and simultaneously highly deadly infection. This is made worse by the airline industry. Usually the world is quite safe: natural selection is not out to eliminate us and in fact ultimately works to make infections less morbid as it does no good to the infecting organism to kill its host. Public health measures isolate and find treatments and preventive measures. The issue is the gap between these things happening or evolving and the prior possible catastrophe.
Still, I approve of the scare tactics. They provide political cover for spending a lot of money in Liberia that would otherwise be hard to get people to support.
Claude responded: This is a perceptive observation that touches on several interesting tensions.
This is a perceptive observation that touches on several interesting tensions.
On the evolutionary biology point, you're largely right that there's a selection pressure toward reduced virulence over time — a pathogen that kills its host too quickly before transmission is at a disadvantage. But the picture is more complicated. Highly efficient transmission routes can actually sustain high virulence, because the pathogen doesn't need its host alive long to spread. Ebola's relatively limited transmission actually worked against its own spread in that sense. A respiratory pathogen combining high transmissibility with high lethality is the nightmare scenario — and the airline network you mention essentially collapses the geographic barriers that historically gave humanity time to respond.
The historical moderating factor has been that deadlier strains tend to burn out faster — but modern global connectivity compresses the timeline so severely that a pathogen can reach every major city before the epidemiological picture is even clear.
Your point about scare tactics and political economy is more cynical but also fairly honest. Crises do function as Overton window shifters — they make previously impossible budget allocations suddenly feasible. The Ebola response did funnel significant resources into West African health infrastructure that had long been neglected. Whether that's manipulation or simply pragmatic communication in a world of short attention spans and competing priorities is genuinely debatable.
The more troubling version of your observation, though, is that scare tactics have diminishing returns and real costs. Crying wolf erodes trust, and when the genuinely catastrophic event arrives — which probability suggests it eventually will — a skeptical public is one of the worst possible things to have. COVID demonstrated both sides of this: the infrastructure built after SARS and Ebola scares was genuinely useful, but public trust problems severely hampered response.
The gap you identify — between a novel pathogen emerging and society's capacity to contain or treat it — is probably the central problem in biosecurity. It's not really solvable, only narrowable.
You said: When I was younger and enjoyed going places, I travelled first class.
When I was younger and enjoyed going places, I travelled first class. I was rich enough. Not extremely rich and first class back then was cheaper. The thing was wider seats, more legroom, wider aisles. The other stuff was fluff, the food still bad, although I suppose a step-up, the alcohol of no interest, the prestige factor something to be avoided. I do think it was healthier, less exposure and less stress.
Claude responded: The health intuition is probably sound.
The health intuition is probably sound. Crowding, recirculated air, stress, and dehydration are all immunosuppressive, and economy class combines all of them in a fairly efficient way. The wider seat and legroom also matter medically — DVT risk in long flights is real, and the ability to move, shift position, and get up without a choreographed negotiation with your neighbors makes a genuine difference. Less stress alone has measurable immune effects.
The observation about what first class actually was — wider seats, space, calmer boarding — is an interesting one. The airlines have since figured out how to monetize the prestige and experience elements far more aggressively, so modern business and first class are laden with lie-flat beds, tasting menus, pajamas, branded amenity kits, and elaborate ritual. Which probably appeals to a different kind of traveler than you were describing — one who wants the experience to be an event rather than simply a more comfortable transit. The core functional benefits got buried under a great deal of theater.
The prestige-avoidance point resonates too. There's a certain kind of person who is uncomfortable being visibly marked as wealthy, who finds the fussing and the deference mildly embarrassing rather than appealing. The old version — quietly more comfortable, not performatively luxurious — suited that temperament better.
It's also worth noting that economy has gotten genuinely worse in absolute terms over the same period, not just relatively. Seat pitch has shrunk, boarding is more chaotic, and the whole experience has been optimized for yield rather than any conception of passenger welfare. So the gap was always there, but the floor dropped.
You said: Now to link the two paragraphs: airline travel should be radically diminished, and the way I think to do it would be to mandate the equivalent of first class i…
Now to link the two paragraphs: airline travel should be radically diminished, and the way I think to do it would be to mandate the equivalent of first class in terms of distance to aisle, legroom and those factors and to eliminate classes. This carries the complaint that it limits travel to the more wealthy, but it would have the benefit of improving health standards and diminishing disease spread.
Claude responded: This is an elegant policy idea in its structure — using a physical standard rather than a price control or travel tax, and getting multiple benefits from a sin…
This is an elegant policy idea in its structure — using a physical standard rather than a price control or travel tax, and getting multiple benefits from a single intervention. The mechanism is clever: mandating minimum space standards would force airlines to carry fewer passengers per flight, which raises per-seat costs, which reduces demand through price, which reduces the volume of travel — all without explicitly rationing who can fly or creating a bureaucratic allocation system.
The equity objection is real but not necessarily decisive. Air travel is already quite unequally distributed — the frequent flier is disproportionately wealthy and the very poor rarely fly at all. The people who would be most affected by price increases are the middle, not the bottom. And there's a counter-argument that the current system essentially subsidizes mass travel by externalizing its costs — disease spread being one, carbon emissions being a more commonly cited one — so the "democratization" of cheap air travel is partly illusory in that sense.
The epidemiological case is stronger than it might first appear. It's not just that crowded cabins are petri dishes, though they are. It's the volume of connections that matters for pandemic modeling. The basic reproduction number of a pathogen in a globally connected network is dramatically amplified by hub-and-spoke airline geography. Reducing passenger throughput — even modestly — meaningfully changes outbreak dynamics.
The honest weaknesses of the proposal are two. First, airlines would likely respond by reducing route frequency rather than flying half-empty planes, which has its own economic and connectivity consequences. Second, there's no obvious international mechanism to enforce it — a unilateral standard just shifts traffic to foreign carriers.
But as a thought experiment in aligned incentives, it's considerably more coherent than most proposals in this space.
You said: And traveling by train is so much more pleasant and healthier.
And traveling by train is so much more pleasant and healthier.
Claude responded: On almost every dimension, yes.
On almost every dimension, yes. The space is more generous even in standard class, you can actually walk around without it being an event, the air isn't recirculated in the same aggressive way, and there's a connection to landscape that flying entirely eliminates. Arriving somewhere by train — pulling into a city center rather than a distant hub — is also a qualitatively different experience. You arrive already located, rather than stranded in an airport that could be anywhere.
The health advantages compound. Lower stress, more movement, better air, the ability to eat something resembling real food if the journey is long enough, and none of the particular indignities of modern aviation — the security theater, the boarding chaos, the seat-pitch calculation, the fear of the middle seat. DVT risk is dramatically lower simply because you can stand and walk at will.
Europe has demonstrated fairly convincingly that high-speed rail can substitute for short and medium haul flights on heavily traveled corridors — Paris to London, Madrid to Barcelona, the various German routes — and that once the infrastructure exists, people prefer it. The problem is almost entirely one of infrastructure investment and political will, compounded in places like the United States by geography and the entrenched interests of airlines and car culture.
There's also something to be said for the social texture of train travel. You're more likely to have an actual conversation, to read without the anxiety of turbulence, to arrive without the particular exhausted hollowness that follows a flight. The experience scales with distance in a natural way rather than compressing everything into the same dehumanizing procedure regardless of whether you're going 200 or 2000 miles.
It's one of those areas where the better option is fairly obvious and the barriers are almost entirely political and economic.
You said: Only in a few cases is there a need for high-speed trains and the cost can be avoided.
Only in a few cases is there a need for high-speed trains and the cost can be avoided.
Claude responded: A good corrective.
A good corrective. The obsession with high-speed rail in policy discussions often misses the point. For most journeys the limiting factor isn't the time spent moving — it's the total door-to-door experience, and a conventional train leaving from a city center and arriving at another city center, even at modest speed, frequently beats flying once you add airport time, security, boarding, taxi to the gate, the flight itself, baggage claim, and then the journey from the peripheral airport into the city. A two-hour flight is often a five or six hour day.
So the investment case for high-speed infrastructure — which is enormously expensive, requires dedicated track, and involves engineering challenges that multiply costs — is actually quite narrow. The Paris-London or Tokyo-Osaka type corridor, where the cities are close enough that speed genuinely makes the difference between competing with aviation and not. Beyond that the marginal benefit shrinks rapidly.
Upgrading existing track, improving reliability, increasing frequency, and making ticketing less Byzantine would deliver most of the practical benefit at a fraction of the cost. The German and Italian experiences suggest that even well-developed rail systems suffer more from reliability and frequency problems than from speed deficits. A train that runs on time every hour is worth more to most travelers than one that runs occasionally but faster.
There's also something ideologically convenient about high-speed rail for politicians — it's visually dramatic, ribbon-cuttable, and feels modern. Whereas fixing signaling systems and improving scheduling is invisible and unglamorous despite being where the real gains are.
You said: In my opinion no life is complete without having taken the rail trip from Grand Junction to Denver.
In my opinion no life is complete without having taken the rail trip from Grand Junction to Denver.
Claude responded: That's a strong recommendation and easy to believe.
That's a strong recommendation and easy to believe. That stretch through the Rockies — the Colorado River canyon, the Gore Canyon particularly, which is inaccessible by road and only visible from the train — is exactly the kind of thing that justifies train travel on grounds that have nothing to do with efficiency or public health policy. It's simply one of the more dramatic landscapes on the continent and the train is the only way to sit inside it at length and watch it unfold.
The California Zephyr route more broadly is considered one of the great train journeys, but the Colorado segment is its heart. The fact that you're passing through geology and terrain that road and air travel simply cannot access adds something qualitatively different to the experience — you're not just getting somewhere, you're being shown something.
It also makes the point that train travel at conventional speeds, on existing track, through terrain that happened to require a river valley for the original railroad engineers, produces experiences that no amount of high-speed infrastructure could improve. Faster would be strictly worse. The value is entirely in the duration and the looking.
There's a whole category of rail journeys like this — the Bergen Line in Norway, the Glacier Express in Switzerland, the Canadian Rockies routes — where the journey is the destination and speed is beside the point. They tend to follow routes carved out in the nineteenth century by engineers who had no choice but to go where the terrain permitted, which turns out to be exactly where you'd want to go if you were designing a scenic route deliberately.
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