api_or_ipa

To be perfectly fair, the list of DNSSEC cock-ups is staggering. .nz ccTLD was taken down, IIRC, for 4 days after a bad KSK rollover just last year. I’ve seen prominent registrars with ‘automated’ DNSSEC fail to upload correct NSEC and RRSIGs. It’s not uncommon to see .gov domains go down because of DNSSEC. You’d think all these entities should get it right, but they don’t. Probably why many major tech domains such as google.com don’t use DNSSEC.

But to your point, using a ‘off-brand’ can really hurt sometimes. `.af` might be a cute marketing tactic, but it’s actually Afghanistan, and the Taliban play by a different rulebook. I believe it was `gay.af` that found that out the hard way. Tons of other stories.

I suppose furniture also follows the [Lindy Effect](https://en.m.wikipedia.org/wiki/Lindy_effect)

Fiddlesticks.

Redwoods are a fabulous building material. If you’re in the Bay Area, go check your houses joists. Quite a number of old houses here are made of redwood. AFAIK it makes a great wood for joists and structures because it it’s resistant to pests. My nearly 100 year old house’s joists are in fantastic condition. Big, beautiful beams, nearly completely clear and free from knots.

The reason it’s rarely used today is because we’ve cut down all the good trees and it’s wildly uneconomical to grow compared to cheaper woods.

Why wouldn’t running a heat pump in reverse to heat a room be ~same energy as running it in forward to cool a room?

I suspect you’re comparing an airconditioner against a resistive heating unit.

I feel an overwhelming itch to fire up KSP and show them how it’s done!

I’ve thought about this a lot while restoring an old sewing machine. I conclude it comes down to the Labor-Capital share in a market [1].

Labor used to be relatively more abundant compared to capital. In these conditions, servicing an older machine makes economic sense.

With capital becoming relatively cheap compared to labor, servicing becomes more expensive. It then becomes cheaper to simply replace an appliance, utilizing efficiencies of scale unlocked on the factory floor though greater automation. Repairmen don’t enjoy the same efficiency gains because diagnosing and repairing an issue is still fundamentally a manual process.

1 https://en.m.wikipedia.org/wiki/Labor_share

I think they’re referring to modern cartridge bullets, as opposed to little lead balls stored separately from the powder and whatever else is rammed down the barrel in preparation for the next short.

Indeed the first integrated cartridges were developed around 1808 https://en.m.wikipedia.org/wiki/Cartridge_(firearms)

I don’t think it’s fair to conflate autism (a specific medical condition) with passionate (a personality trait) Where would we be without these kinds of people?

Shipping of raw resources is cheap. Much of the bauxite used in aluminum cans in N America is shipped to Kitimat BC [0] to be smelted. Aluminum is notoriously electrically expensive.

0 https://en.m.wikipedia.org/wiki/Kitimat

In Canada an in-sink garbage disposal unit is called a Garburator. I recently learned that’s a brand name of said devices. I’ve lived in the states for a while now, but I’m entirely unsure what everyone calls them down here.

I’d interpret it as offer to support the project and receive high quality prints. The author is clearly gifting the world an incredible portfolio; one ought, if able, to financially support such unique, open datasets.

Curiously, the US Articles of Confederation explicitly permit the annexation of Canada within the United States but offers no similar offer to Mexico.

> Article XI. Canada acceding to this confederation, and joining in the measures of the united states, shall be admitted into, and entitled to all the advantages of this union: but no other colony shall be admitted into the same, unless such admission be agreed to by nine states.

https://www.archives.gov/milestone-documents/articles-of-con...

Better I say it before dang or another mod says it: Your comment, especially the unwarranted retreat to antagonistic expressions, doesn't contribute to a worthwhile discussion. I'd ask that you try to angle your comments to be more constructive.

Very cool. I love seeing development in commercial non-chemical-propellant technologies.

Question about the total impulse. For ND-500+, they claim up to 250kNs of total impulse and a wet mass of 10-20kg. Assuming a spacecraft mass of about 100kg, and a fuel payload of 10kg, that's only about 2000m/s dV. Not enough to go to Mars, but enough to extend an LEO mission or to send a tug to deorbit space junk.

Anyone know how much one of these might cost?

Pretty sad. I hope someone picks up the pieces and keeps the company going. Say what you will about the company and it's leadership, but WeWork as a service was splendid. Yes, there's lots of other short-term office providers, but I never found a competitor that executed on the vision of a world-wide lattice of places from which to work.

Having a place to work vastly opened up my vacation cycles. Instead of travelling for a single weekend, I could go visit a friend in Paris, or Mexico City, or back home, or wherever. During the week when people worked, I would work out of a WeWork. Come 4-5pm, I'd go hangout with the people I wanted to see. Suddenly a long-weekend trip could be feasibly expanded to a week or longer without much hassle.

Tap water has to come from somewhere. Dig a well, dam a river or desal the ocean, they all have significant costs to produce, treat, and distribute the water.

Even if you did build one of these devices outside your house, you'd still need to pressurize and plumb it into your house's water supply.

Simply producing water is but one step among many to make that water usable.

Confused by the "... that is cheaper than tap water". Growing up on an island with desalination, that was our tap water!

Pricing is interesting. $299 for the Wayfarer model when the base Wayfarer goes for $171 on the Rayban website. If (and this is a big if) you assume Luxottica takes the same cut on both models, then Meta is selling a camera, headphones, etc, conveniently packaged into a very small form-factor for $128. If I were in the market for a new pair of sunglasses, it isn't hard to seem me splurging another $128 for something that could potentially replace my airpods for taking calls while I'm away from home.

Personally, not a fan of sticking a camera everywhere I look though. I get why companies want to push that feature (more data!) but I just don't see a reason why consumers need a camera pointing at everything they're doing.

Kinda cool nonetheless.

To kill a senior states-person will certainly lead to war which is itself highly un-environmentally friendly. The carbon credits in this case are the expected value of any averted war. A single F-35 burns something like 1,500 gallons/hour.

Taking the car is a small price, economically and environmentally, to avoid the potential of war.

I would recommend everyone buy used furniture. We (my partner and I) furnished our apartment for next to nothing with solid wood furniture. Our queen sized pineapple bed made in the 60s from solid wood cost us $35 and is easily the most solid/best bed we've ever owned.

UCI Weight limit is 6.8kg. For anyone thinking about entering into a serious bike race with one of these bikes, it's too light.

The specific hottest temperature reading from Death Valley in 1913 is far from certain. The reality is we aren't sure how accurate that reading really was (turns out, measuring accurately temperature is harder than one might think). We're a lot more certain about recent temperature readings and aside from Death Valley there are far more records broken nowadays than in the past. For example just 2 years ago, Canada's hottest temperature reading was (121.3f) in Lytton BC. Before that, the record was set thousands of miles away. Lytton usually gets hot in the summer, but never that hot.

I am fortunate to have three siblings with children of their own. During my teens, twenties and early thirties I've watched as my six nieces and nephews have gone from preschool, gradeschool and now, for some of them, into university. It's been a marvelous experience. The most striking observation comes from the development of my nephews. Our view of masculinity is decidedly stoic, strong, independent and emotionally stable-- there is nothing in my mind to say men can't be _different_, just that Western culture has selected that male paragon for so long, it may take another hundred years for a masculinism movement to make any changes to this norm. Anyways, my anecdotal experience watching my nephews grow up points toward a few clear heuristics: boys grow into good men when they are surrounded by nurturing parents; plenty of exercise, ideally in the backcountry; the opportunity to make (and then correct) mistakes in an environment that doesn't prematurely shame; a social environment comprised of good men and women from all ages and to whom they can relate; strong family connections, especially around dinner time; and most of all, parents who encourage them to get outside, get lost, get in trouble, all without a cellphone, social media or an escape hatch.

On the topic of social media, if it's been proven bad for teenage girls, it shouldn't be a surprise that social media must be equally polarizing, alienating and ultimately extremely poisonous for our young men as well.

I use the programmer variant of dvorak. The number keys are 'swapped' with symbols, so you press shift to access numbers. Given that most programmers (should) use symbols more often than numbers, this is highly convenient. Strongly recommend checking it out.

For the record, I mostly use python nowadays but it's still a big improvement over mashing shift all day.

Interestingly enough, the two vim bindings you probably use most, up/down (j/k) are actually positioned right next to each other on a dvorak keyboard. The rest take a bit of getting used to. You'd be surprised how natural vim feels on a dvorak keyboard.

As a dvorak user, whatever increase in typing speed is mostly irrelevant, for most of us, our output isn't limited by how fast we can type, but how fast we can think. That being said, a long time ago I took an analysis of one of our code bases, mapped every character onto dvorak and qwerty keyboards to produce heatmaps, and it's startling how much less the fingers have to move on a dvorak keyboard. So if you're lazy, dvorak might be something to consider.

Overall, I've been using dvorak for >10 years and I like it. Going back to Qwerty is like going back to sleeping on a twin mattress. It gets the job done, but once you've become accustomed to sleeping on a queen, it's hard to justify going back to a twin.

Would love to read this, but the website has no zoom buttons and if I zoom in using my browser and click anywhere, that annoying sidebar screws everything up.

Can't find the doc on scihub. Anyone have a PDF they can share?

Playing Factorio took me down the deepest of rabbit holes to understand railway signals. One of the most difficult situations to deal with is deadlock, where one train blocks another train, which blocks yet another train until the network is jammed. While there are design heuristics to avoid deadlock, I never found a formal way to verify deadlock avoidance. This in turn led me down a sub rabbit-hole about envisioning a language to specify a train network layout that could provide guarantees about deadlock.

Since IRL railways don't seem to deadlock as much as my in-game networks, I'm assuming railway designers have figured out a way to handle them that I haven't been able to replicate.

If anyone has experience in this field, I'd love to learn more. Oh, and if you're planning to play Factorio, you should probably block off your calendar for a couple weeks. It's notoriously addicting, especially for process-orientated engineering type folks.

The reality is that Apollo doesn't serve intrusive ads, and thus, every user using Apollo instead of their own first party apps is lost revenue. Unfortunately, reddit is in that late stage monetization step where they need to prove they are capable of big revenue to justify a high IPO share price.

One can only hope there'll be a watershed moment like the one that killed Digg. So far, reddit has been very careful raising the temperature so as to not scare the frog before it's dead.

There are about 730 hours in a month. $14,000/month works out to ~$19.17 per hour. Of course, being on-call does not equate to being at work. This sounds like a ridiculous clerical error. Most of us here are used to being on-call for pagerduty, and aside from the occasional fire-alarm, none of us are significantly impacted, and certainly not compensated for these events.