HNHacker News
TopNewBestAskShowJobs

dmckeon

2,568 karma · joined April 13, 2012

https://news.ycombinator.com/user?id=dmckeon
submissionscomments
dmckeon··on Highway to Ruin: The crash of Southern Airways flight 242 (2022)
> a former Royal Canadian Air Force base in Gimli, Manitoba, which had been converted to a racetrack

Technically.

dmckeon··on Call on the IRS to provide libre tax-filing software
What would it cost the US government to buy out the major tax prep providers? The IRS could then provide free tax estimates to a large percentage of filers, and hire many former tax prep workers as IRS agents.
dmckeon··on Why do ships use “port” and “starboard” instead of “left” and “right?”
But if you are working with horses or other draft animals, you work them from the "near" (left) side, and not the "off" (right) side. Next up in directions trivia: shotgun, deasil, and widdershins.
dmckeon··on Spanish climber emerges after 500 days in cave
Similar previous research: https://en.wikipedia.org/wiki/Stefania_Follini spent 130 days underground, isolated from external clues about time and circadian rhythms. Her sleep cycle lengthened a lot.
dmckeon··on USPS facility in Utah does nothing but decipher handwriting
From that article:

> Church policy is that people baptize only their own dead relatives

but indeed, some adherents apparently do proxy-baptise unrelated people.

dmckeon··on Switching to Fedora from Ubuntu
> DNF is slow as molasses

Run dnf with -C / --cacheonly unless you need package metadata that is fresher than your coffee. Much speedier. The fastestmirror setting may help, but unfortunately is based on ping time rather than download time, so results there will vary. A new version of DNF is in beta, to be available in Fedora 38, and be the default in Fedora 39, IIRC.

dmckeon··on SVB's programmatic payment systems are back online
This was pretty strong: https://home.treasury.gov/news/press-releases/jy1337
dmckeon··on Last Flight Out
Wikipedia gives the altitude for the South Pole station as:

> The station is located on the high plateau of Antarctica at 2,835 metres (9,301 ft) above sea level.

The screenshot shows air pressure, expressed as altitude and pressure. 685mb is mildly thin air for humans, but the top of Everest is about 250mb. Earth sea level is 1000mb, and the surface of Mars would be about 6mb. BYO oxygen and pressure.

dmckeon··on Trove of spices from around the world on sunken fifteenth-century Norse ship
It is also thought to have been a contraceptive and abortifacient.
dmckeon··on 43 Hours on the Amtrak Southwest Chief
Some suggestions re Amtrak: review carefully the speeds on your journey legs of interest - 80 miles/hour across Kansas is nice, 35 m/h on "slow orders" across West Texas feels interminable. Also (as OP mentions) note side of train and expected time of day relative to your preferred scenery of interest. For folks from Europe or Japan, Amtrak is no TGV, more like a pre-TGV inter-city sleeper.
dmckeon··on The Pretty Good House
Matt's channel seems to focus on innovative technology. For a slightly more traditional approach to a "spec" (speculative) house-building process, see the "Essential Craftsman" series of 150 videos by Scott and Nate Wadsworth https://www.youtube.com/playlist?list=PLRZePj70B4IwyNn1ABhJW...

Scott is the builder, and Nate, his son, the videographer and editor. The subject matter is clearly and honestly explained, and the video, sound, and editing is generally professional quality. From survey and site prep all the through to finish and completion, I would recommend it to anyone in the US considering a bespoke or custom home.

dmckeon··on Tesla plunges 250 feet off a California cliff, all 4 occupants survive
Video from fire/rescue on scene: https://twitter.com/CALFIRECZU/status/1610075687981023233

Local news: https://www.cbsnews.com/news/tesla-california-cliff-2-kids-2...

Reports suggest that the vehicle tumbled down the steep cliff rather than free-falling. Occupants are very lucky that the incident was witnessed, reported, and responded to quickly, and that rescuers used binoculars to observe movement in the wrecked vehicle and quickly shift from recovery mode to rescue mode.

dmckeon··on Archaeology and genetics can’t yet agree on when humans arrived in the Americas
Great review of a complicated and developing topic. Best line, and so true:

> Unfortunately, because science is all too often taught in school as a collection of facts, rather than a dynamic process of enquiry, people can be vulnerable to being misled ...

dmckeon··on Power substations vandalized in Washington state
For context, search "accelerationism" - here is one point-of-view: https://www.fpri.org/article/2020/04/the-growing-threat-pose...
dmckeon··on The antimicrobial resistance crisis needs action now
Also 40 years ago, 40-some years after penicillin was introduced, gonorrhea had evolved to produce an enzyme that acted specifically against it, penicillinase. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1046026/pdf/brj...

No matter how many new, different, or even radical antibiotics we develop, unless we get ahead of over-prescribing and under-treating (not taking all of a prescribed treatment course) we will continue to rapidly evolve more successful micro-organisms, to our own detriment.

dmckeon··on Marion Smith, the world’s most prolific cave explorer, dies at 80
As Mister_X mentioned, in the US, start with the National Speleological Society at https://caves.org/ There is also a sub-reddit at reddit.com/r/caving/ Definitely find a local group - if there are caves in your area, there are probably also cavers who explore them.

Basic safety rules include: cave with groups of 3 to 6 people, some of whom have experience, bring 3 independent sources of light, use helmets and headlamps, avoid hand-held lights (a strong sign of inexperience or incompetence), leave word of your plans - where you are going, expected return time, who to call for help - with a trustworthy friend. Some basic knowledge of geology is useful, as is comfort with physical contortion, sturdy clothing, and an ability to orient and visualize in 3-dimensions in environments that are far from rectilinear.

Respect the culture of secrecy about cave locations, which helps protect them from damage. Take nothing but pictures, leave nothing but footprints.

dmckeon··on Soil in Midwestern US is eroding 10 to 1k times faster than it forms
Aren't those the "pre-agricultural erosion" rates that are lower than the current rates?
dmckeon··on Latam Airlines Airbus A320neo hits fire engine on runway during take-off
Survived, yes, but

> The flight carried 102 passengers, 36 of them got injured of which 4 seriously injured.

dmckeon··on The Perl Foundation will now be known as The Perl and Raku Foundation
Code golf is an enemy of clarity, and clear Perl has been a victim of that.
dmckeon··on New motorcycle lighting design could save lives
I believe that the apparent benefits to traffic safety from various lighting schemes share an underlying reason: producing uncertainty in other drivers, and thus more delay or caution before maneuvering. Daytime headlights for motorcycles (standard in the US since the 1970s, or so), daytime running lights (standard in Canada, now common in the US), helmet-mounted headlamps for bicyclists - all tend to produce a reaction of "Wait, what is that?" in drivers.
dmckeon··on FCC Approves 5 Year Satellite Deorbiting Rule
A set of satellites that could do laser ablation of debris or EOL sats would be great, but would need safeguards to not become a weapon of economics or war.

Avoiding splash-over or collateral damage to other sats in or near the line-of-sight would be an issue, especially if any of those other sats might have capabilities that their nation/owner might want to keep secret. Perhaps an arrangement of vetos over particular ablation shots would suffice. Countries wanting to hide their interests in some sats could veto N times as many shots as needed, making uncovering which sats are special more difficult.

In any case, laser ablation would need much less delta-V than the usual imagery of plucky space-cowboys chasing errant sats with a net, or some such. Who knew that _Planetes_ would have such a strong effect on our collective imagination.

dmckeon··on How to survive a lightning strike (2014)
The US CDC suggests crouching, among many other suggestions: https://www.cdc.gov/nceh/features/lightning-safety/index.htm...
dmckeon··on $ rm Important.txt (uh oh)
No need for "$@" there? (Not many file names with spaces?)
dmckeon··on Congress.gov API
An interesting side-effect of universal mail-in ballots is the detection of fraudulent voter registrations. If ballots addressed to Tinker, Evers, and Chance arrive at 123 Elm Street, which is only occupied by the Smith family, one should reasonably assume shenanigans, if not felonies.
dmckeon··on The tyranny of the wagon equation
In the 1200s the eastern horse-hordes used frozen rivers to speed up their rate of advance and took much of the area west of the Urals by surprise.
dmckeon··on History of Yard Lumber Size Standards (1964) [pdf]
I worked in a retail lumber yard in the mid-1970s and learned to be very patient with crochety old pharts who complained that "a 2x4 used to be a full 2"x4" dagnabbit..." Am now a somewhat crochety old phart myself, and was surprised to find that 1.5" x 2.5" actual (2"x3" nominal) is considered adequate for some studs. Source: https://www.homedepot.com/p/2-in-x-3-in-x-96-in-Select-White...

Am pleased to see that effective hacking has a long history:

> Dimension was fitted into place by the carpenter, more often than not with his hatchet.

dmckeon··on Machine learning finds an improved way to match donor organs with patients
Improvements in organ donation/procurement networks in the USA are needed. "In 2020, 21.3 percent of procured kidneys were not transplanted," per https://www.washingtonpost.com/health/2022/08/03/transplant-... and https://onlinelibrary.wiley.com/doi/epdf/10.1111/ajt.16982 We should not let an unknowable and unachievable "perfect" be the enemy of better.
dmckeon··on Counterfeits, fraud, and theft: Why Silca changed its return policy
When LL Bean started, 90% of his boots were returned, and the purchases refunded - which gave Bean the opportunity to analyze how the boots had failed, redesign them, and send new boots to his dissatisfied customers. Apparent MVP failure becomes better engineering becomes marketing and research. Find out what your users/customers want. sources: posted on the store wall in Freeport, and https://www.ecmag.com/section/your-business/lessons-learned-...
dmckeon··on How to buck a tree: Cutting logs for maximum yield (2018)
Recently overhauled my rsyslog setup to do timestamps in rfc3339 format. Almost as good as keeping a chain saw chain nicely sharpened, and not replaced backwards!
dmckeon··on SMS phishing is way too easy
Hello, this is Fidelity customer service, and to confirm this, we will send a text message with a code to the phone number you registered with us. For security, please confirm you are our customer by responding with the code.

Narrator: No, it was not Fidelity, but a scammer who needed the code to drain the customer's Fidelity account.

← PreviousPage 4 of 25Next →