> the data showed that on summit night, the average body temperature difference between the twin in modern down and the twin in complicated layers of silk, wool, and gabardine was a staggering 1.8°C.
> “In a hundred years, you’ve gained—arguably—one degree of efficiency per 50 years,” Ross reveals.
Depending on where the baseline is, 1.8 degrees could be huge! But more importantly, heat dissapation is a non-linear function. The warmer you are relative to your environment, the more energy is lost. While Shackleton's kit forms a lower baseline, it probably makes sense to imagine how some imaginary perfect vacuum insulated sleeping bag would perform.
If they're actually measuring body temperature (using that swallowed pill they mention?) then 1.8C is a huge difference.
This whole article does feel like they started with a conclusion and they were going to report that conclusion regardless of what they measured or experienced. Content that claims to debunk things is hot right now.
Also the body will increase metabolic rate in the cold to maintain body temperate which is an externality they aren’t measuring. The user of the worse clothing is very likely burning more calories and still not as warm. This would mean increased fatigue and greater food weight on expeditions.
I disagree. People also may care about the cognitive load of thermal management. As the article notes:
> the gear of the past is capable, but it has a narrower operating window. If you stop moving in Mallory’s kit at 8,000 meters, you will freeze quickly. Modern gear buys you a safety margin if you become static.
In modern terms, this means that stopping to take a photo — whether Ansel or selfie — would carry a material risk of harm in the classic gear that is addressed by modern gear. The example of a selfie is perhaps too easily dismissed unconsidered, but the cognitive load is real for casual hikers, and is a benefit to modern gear that deserves the mention it gets. If I had to choose between a cap that has perfect heat management and a cap that weighs 10g less but requires me to constantly take it off and put it on every five minutes to allow evaporation, I would choose the heavier and lower annoyance cap. Each person’s preferences and skills apply; if one seeks to minmax weight/thermal then that’s a negligible price to pay to improve — but only some truly do strive for the limit of lowest mass without regards to complexity.
There was an enviro-scifi book from the eighties that noted that a few people will pursue ‘one piece of apparel serves all functions’ skinsuit to the exclusion of all other concerns (such as natural fabrics or apparel design), at which point we would plausibly expect to see at one extreme the folks who make a discount-ultralight vented bodysuit out of FedEx envelopes. I am taking for granted that someone has tried this, because of course someone has tried this! And that starts to verge on why, in a different enviro-scifi book of that same relative era, the stillsuit existed: the lightest way to have convenient purified water in an absurd climates. Even the stillsuit as we see it described prioritizes convenience, the sip tube, over a more efficient system that doesn’t expend calories on pumping water up. That’s purely because human beings have a cognitive annoyance limit; and we do variably prioritize convenience when assessing the weight-complexity tradeoff.
I go mushroom picking in the Oregon forest every year.
The only real dangerous moment I ever had was getting soaking wet, and when the storm cleared, I stopped like a fool to eat lunch in a sunny for breezing opening. I finished lunch, and realized I was shockingly cold. Like, dangerously cold. I did jumping jacks as long as I could and then started walking uphill even though that wasn't where I wanted to go really. Weird moment.
I used to lead hiking trips and being wet (and/or exposed to rain a bit above freezing is generally more dangerous than being mostly dry in colder temperatures
I didn’t wear my rain gear hiking uphill in a quarter inch per 4 hours downpour and started feeling sleepy by degrees until I caught myself looking for a place to lie down for a nap. At that point I realized I’d better turn around posthaste.
It must just be that the way the stillsuit functions is because of the limits of Herbert as a engineer and designer had been reached and he did not think or realize that there was a more efficient system than the sip tube possible.
Dunno. I'm content analyzing the analogy as if authorial limitations did not apply; it helps fend off the entropic forces of IDIC given the necessity of using flawed examples to communicate at all.
Add body weight and the old gear sums to about three percent heavier than the modern gear. I'd say total weight matters more than gear weight alone, doesn't it?
I've done a lot of long hikes (200+km in the sahara, 6000+m mountains in kazakstan), and 2kg extra means a lot, like the difference between carrying extra fuel/food versus just clothing.
Anyway, you can try it yourself, wear a 2kg wax cotton jacket versus a 500gm technical jacket and see how you feel after a day's hiking.
Yeah, it shows the old gear is about two kilograms heavier than the new gear, which is huge.
Considering that someone carrying 2 extra kilos will also be generating more body heat etc, the focus on heat over the rest of the article is in question.
To clarify slightly: it shows the old gear is significantly heavier in three areas: head, hands, and ‘accessories’. I think that suggests where investment in technical fabric has been most successful at improving the burden of mass in surviving extreme cold.
Tech fabrics were a prerequisite to the widespread use of down in adventure clothing. Earlier fabrics were either too heavy, like leather, and would collapse the down and negate its insulating properties, or would get wet like cotton/linen and saturate the down.
Verification debt has always been present, we just now feel an acute need for it, because we do it wrong.
Clause and friends represent an increase in coders, without any corresponding increase in code reviewers. It's a break in the traditional model of reviewing as much code as you submit, and it all falls on human engineers, typically the most senior.
Well, that model kinda sucked anyways. Humans are falliable and Ironies of Automation lays bare the failure modes. We all know the signs: 50 comments on a 5 line PR, a lonely "LGTM" on the 5000 line PR. This is not responsible software engineering or design; it is, as the author puts it, a big green "I'm accountable" button with no force behind it.
It's probably time for all of us on HN to pick up a book or course on TLA+ and elevate the state of software verification. Even if Claude ends up writing TLA+ specs too, at least that will be a smaller, simpler code base to review?
Will the TLA+ spec Claude spits out do what the users actually desire? Will there be human oversight of the spec? If not, I don't see how it really helps if the future human machine interface is supposed to be loosey goosey natural language. The best thing I can conceive is some human observers of the system saying "Claude, the behavior as it stands now is perfect! Set it in stone with TLA+." But this whimsical idea has many problems.
Sadly, Season 1 Joe is just incohesive. Like, you want there to be some structural reason behind his madness and there just isn't any, because there's too much of crazy. Season 2 tries to walk much of that back.
I haven't yet seen season 3 and beyond, but it's clear the OP blogger agrees:
> The best thing the show’s writers ever did was realize that Joe wasn’t the most interesting character.
Like, Lee is a good actor for sure, he was just given a poorly story crafted role.
In context in this case, “hell of a lot of.” Seems we English speakers come up with myriad grammatical constructions to seem less offensive in certain forums.
Well, mostly I realized my first sentence was likely to come off more negative than funny (I just like, really enjoyed F-Zero GX back in the day!), so I decided to add a folksy salute to the effort to dilute that. And a smiley face, people heckin' love those =)
"Heck" is to "Hell" like "Darn" is to "Damn" (or "Freaking" to “F--ing") - a word that sounds similar but is more polite, to be said in public in more religious places and times.
It's a form of hella which is "hell of" but hecka sounds silly so you get heckin. (Heck is also used as a substitute for fuck sometimes and takes its forms.)
This still doesn't make sense as "hellin" isnt a term in wide use. What makes the most sense is transition from "fuckin". But why not simply use fuckin? Surely invoking sex is less taboo than invoking hell.
> What makes the most sense is transition from "fuckin". But why not simply use fuckin?
Indeed, you have a community that wants to be family friendly but high energy, and so the technique is to start with "fucking", one of the top tier swears, and replace its root word with the lowest tier swears. And part of the charm is that "hell" is barely a taboo topic -- it's part of the Apostle's creed and plenty of sermons, and there's no commandment against its use[1], yet it gets minced to "heck"!
Depending on where the baseline is, 1.8 degrees could be huge! But more importantly, heat dissapation is a non-linear function. The warmer you are relative to your environment, the more energy is lost. While Shackleton's kit forms a lower baseline, it probably makes sense to imagine how some imaginary perfect vacuum insulated sleeping bag would perform.
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