<rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Hacker News: LeifCarrotson</title><link>https://news.ycombinator.com/user?id=LeifCarrotson</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Thu, 18 Jun 2026 16:57:12 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=LeifCarrotson" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by LeifCarrotson in "L'Affaire Siloxane"]]></title><description><![CDATA[
<p>From the paper:<p>> <i>The main sources of VMS were determined to be antiperspirants ... skin lotions ... wipes ... and hair conditioner. Several siloxanes-free options are available for [these products]. These products are now being assessed for crew member use in future increments.</i><p>From the blog:<p>> <i>At present the agency is testing a new filtration system to put in front of the heat exchangers, to try to protect them, and continuing to try to cut down on siloxanes at the source level. There are probably people at NASA now whose entire career has been built on siloxane control.</i><p>Why wasn't the result to simply ban siloxane-containing cosmetics and wipes? The cosmetics are up to the individual astronaut, which is a little crazy, but the wipes are provided by NASA, and they're still using siloxane-bearing wipes, which shortens the life of their water systems and costs crazy amounts of money.</p>
]]></description><pubDate>Wed, 10 Jun 2026 20:37:02 +0000</pubDate><link>https://news.ycombinator.com/item?id=48482325</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48482325</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48482325</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "Why isn't the U.S. better at soccer?"]]></title><description><![CDATA[
<p>Those genetic requirements come into play at elite levels, but you need to start young, when those differences are less obvious.<p>You need to look at what sports an eight-year-old is playing in the backyard, what sports his Dad is excited about on the TV.<p>An agile, fast, coordinated kid who's coachable and wants to train hard but is going to grow up to be 5' 8" is not going to make the NFL or the NBA, but if they've got the athleticism to play in the World Cup... well, in the US that kid will be the point guard on the local high school basketball team and also play safety and wide receiver on the football team.<p>In India, they'd be a cricket star.</p>
]]></description><pubDate>Sun, 07 Jun 2026 20:36:08 +0000</pubDate><link>https://news.ycombinator.com/item?id=48438287</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48438287</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48438287</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "The OnlyFans Economy of American AI"]]></title><description><![CDATA[
<p>I don't even know what "make software vulnerable to a specific agency" would look like.<p>Would the training data include a bunch of cryptography primitive training samples that preferred Dual_EC_DRBG with a particular set of Ps and Qs published by the CCP?</p>
]]></description><pubDate>Sun, 07 Jun 2026 16:38:51 +0000</pubDate><link>https://news.ycombinator.com/item?id=48436462</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48436462</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48436462</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "Am I Unc?"]]></title><description><![CDATA[
<p>Are you 20? I got 35 unc which is a few points less than my IRL age.<p>I'm curious at what (if any) age the mean score skews to greater than age in years. I expect there are multiple brackets, the very young won't check off many at all but by some of the entries are sufficiently niche that when an octogenarian takes the test they won't hit more than 80% of the options.</p>
]]></description><pubDate>Fri, 05 Jun 2026 17:35:32 +0000</pubDate><link>https://news.ycombinator.com/item?id=48415740</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48415740</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48415740</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "Mornings and nights no longer exist at 47C: A day in the hottest place in India"]]></title><description><![CDATA[
<p>Reminds me of the opening to "Ministry for the Future" by Kim Stanley Robinson.<p>In that book, a wet bulb event (high humidity and high temp) in India pushes infrastructure past the breaking point, the grid goes down, AC systems still running on generators are overloaded and overcrowded and fail, the water temp goes over body temp, and millions die.<p>The positive cultural/societal reaction to the disaster strained my suspension of disbelief pretty hard, as is typical of KSR novels in my experience, but the idea of a heat wave causing a massive catastrophe (and the poignant description of attempting to live through it) stuck with me.</p>
]]></description><pubDate>Thu, 04 Jun 2026 22:48:28 +0000</pubDate><link>https://news.ycombinator.com/item?id=48405721</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48405721</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48405721</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "Ian's Secure Shoelace Knot"]]></title><description><![CDATA[
<p>Content creating is not maintenance. And hosting of a static site is dirt cheap, caching works flawlessly.<p>It could've been a two-million-dollar website if he'd tried to roll his own CMS and Javascript framework, for zero benefit over the one-million-dollar website he actually built.</p>
]]></description><pubDate>Thu, 04 Jun 2026 17:21:37 +0000</pubDate><link>https://news.ycombinator.com/item?id=48401711</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48401711</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48401711</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "3D-printed book turns its own G-code into raised lettering"]]></title><description><![CDATA[
<p>Many G-code dialects contain subprogram calls, loops, and conditionals that seem like they'd permit a physical quine. The standard RepRap firmware breaks the rules by taking input:<p><a href="https://reprap.org/wiki/G-code#M98:_Call_Macro.2FSubprogram" rel="nofollow">https://reprap.org/wiki/G-code#M98:_Call_Macro.2FSubprogram</a><p>but Fanuc and other dialects allow M97 to call a subroutine chained to the end of a program.</p>
]]></description><pubDate>Thu, 04 Jun 2026 16:54:16 +0000</pubDate><link>https://news.ycombinator.com/item?id=48401347</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48401347</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48401347</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "How turkey hacked the hair-transplant industry"]]></title><description><![CDATA[
<p>They come from lower parts of the patient's scalp. The typical "receding hairline" pattern is caused because the follicles on the forehead and top of the head become sensitive to with age to DHT, the but the hair follicles on the lower and on the back of the head don't have the same sensitivity. There's usually more than enough of these resistant follicles to maintain sufficient hair density.<p>The surgery just moves the follicles around your own scalp. Body hair transplant can be done but is relatively uncommon, donor hair from other people (or animals) requiring a lifetime on immune system suppressing drugs as with an organ transplant is virtually unknown.<p>No, it's not pubic hair and you don't need to have a hairy back or chest, and no, there are not millions of low-status Turkish men walking around with scarred heads because they sold their scalp to a foreigner.</p>
]]></description><pubDate>Wed, 03 Jun 2026 18:29:59 +0000</pubDate><link>https://news.ycombinator.com/item?id=48387832</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48387832</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48387832</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "ESP32-S31"]]></title><description><![CDATA[
<p>Not "just", it's (presumably) 8 dedicated pins that form an RMII interface. This is not the same 8 pins as you'll find in your 4-pair Ethernet cable, it's a separate protocol which can be connected to an Ethernet PHY transciever like a TI DP83867E [1], which is further connected to "magnetics" [2], a convenient package of 8 integrated transformers and chokes that provide the galvanic isolation feature of an Ethernet connection.<p>A few SoCs provide integrated PHY transceivers, but usually it's an external chip.<p>[1]: <a href="https://www.ti.com/lit/ds/symlink/dp83867e.pdf" rel="nofollow">https://www.ti.com/lit/ds/symlink/dp83867e.pdf</a><p>[2]: <a href="https://yageogroup.com/content/datasheet/asset/file/DATASHEET_HX5008FNL" rel="nofollow">https://yageogroup.com/content/datasheet/asset/file/DATASHEE...</a></p>
]]></description><pubDate>Wed, 03 Jun 2026 17:28:21 +0000</pubDate><link>https://news.ycombinator.com/item?id=48386949</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48386949</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48386949</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "Three Ways to Get Paid (2018)"]]></title><description><![CDATA[
<p>Yeah, but even when it was a new quote, it was inaccurate: People have always wanted to follow their own desires, always wanted to be told what they want to hear, and always disliked listening to harsh truths. Even in 64CE.</p>
]]></description><pubDate>Tue, 02 Jun 2026 20:51:52 +0000</pubDate><link>https://news.ycombinator.com/item?id=48376101</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48376101</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48376101</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "Gmail thinks I'm stupid, so I left"]]></title><description><![CDATA[
<p>Much like planting a tree, the ideal time to use your own domain for email was many years ago, but the next best time to do it is today.<p>Do it! minraws.com (if that means anything to you) is available, you could be firstname@minraws.com as well as your @gmail.com before the sun goes down.  Personally, I'd set it up to feed into a new mailbox with Protonmail, but if you like you can just have it forward to the familiar gmail inbox you're used to.<p>You can start moving your accounts over one at a time. It doesn't have to be instant. Yeah, there are probably IRL business cards in drawers and people you haven't contacted in decades that will mean that you want to forward all emails that go to your gmail to a folder/label in your new email domain forever, but that's OK.<p>Just start.</p>
]]></description><pubDate>Tue, 02 Jun 2026 20:46:00 +0000</pubDate><link>https://news.ycombinator.com/item?id=48376034</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48376034</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48376034</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "A walking tour of surveillance infrastructure in Seattle (2020)"]]></title><description><![CDATA[
<p>Television courtrooms are half of it, the other is social media. Tiktok and Youtube and Facebook will show you videos all day long with notable events that were pulled from security cameras, or uploaded by bystanders with cell phones, or found in the background of videos that were intended to capture something else.<p>The other side of the equation is that surveillance infrastructure is already nigh omnipresent, as described by the attached article. A juror who gets alerts every day from their Ring doorbell, who drives a Tesla with an integrated dashcam, and parks in a lot covered by their apartment's security cameras, can be easily persuaded that camera surveillance should be the standard of proof.</p>
]]></description><pubDate>Tue, 02 Jun 2026 20:33:43 +0000</pubDate><link>https://news.ycombinator.com/item?id=48375881</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48375881</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48375881</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "Cars collect a startling amount of data about you"]]></title><description><![CDATA[
<p>I've got a couple older cars (2010, 2003), but the only new one I'm excited about - the only actually new car I've ever considered buying - is the Slate truck:<p><a href="https://www.youtube.com/watch?v=5_G4OfXTlvs" rel="nofollow">https://www.youtube.com/watch?v=5_G4OfXTlvs</a><p>It has an LCD for the gauges and backup camera, but no modem and no surveillance tech. Bring your own phone/tablet if you want navigation or audio.</p>
]]></description><pubDate>Fri, 29 May 2026 13:22:44 +0000</pubDate><link>https://news.ycombinator.com/item?id=48322803</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48322803</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48322803</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "Five frontier LLMs disagree on 67% of 1k real-world fact-check claims"]]></title><description><![CDATA[
<p>I don't think that current LLMs really need an abstain option, they'll give an answer regardless of whether they're confident or not. I hope that future LLMs will, and will know when to use it.<p>I understand why you prompted them to output exactly one label, but I'd bet if you'd asked a parametric or parametric "thinking" model to answer eg "On May 18, 2026, Ukraine carried out a drone attack on Moscow, Russia." [1] many would say something to the effect of "May 18 is after my knowledge cutoff, so I don't know. But based on the state of the war, the distance from Moscow to Ukraine, and drone range the best option might be...[TRUE]"<p>[1]: <a href="https://lenz.io/c/130f1005" rel="nofollow">https://lenz.io/c/130f1005</a></p>
]]></description><pubDate>Thu, 28 May 2026 13:05:32 +0000</pubDate><link>https://news.ycombinator.com/item?id=48308431</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48308431</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48308431</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "I'm Tired of Talking to AI"]]></title><description><![CDATA[
<p>It's usually an email chain that they're CC'ed on, or for which they're the point of contact: Sales, project management, or (worst) a VP getting pinged by a customer who wants to jump to the front of the line: "Our new X keeps showing a message that says the brobillator needs to be froodicated, and worse it now runs at 1/4 speed, but we don't want to froodicate it already because that's expensive and our maintenance guys are busy. Can you change the interval from monthly to annually? This is a critical issue that might impact our budget to purchase 3 more X units in Q3."<p>The right way to solve this is for the PM to forward it to the ME who designed the brobillator and calculated the 1-month maintenance interval, CCing the controls engineer who helped ensure that machine wouldn't eat itself with the fault and low-speed mode.<p>The wrong way to solve this is for the PM to forward it to ChatGTP[sic], which might mindlessly suggests maintenance-free sealed bearings (that are totally inadequate for the temperatures and contaminants). If he asks the mechanical engineer to redesign it like ChatGTP suggested, that situation may be salvageable. If he told the customer that they'd have an engineer out in 3 days with new sealed bearings it's bad.</p>
]]></description><pubDate>Wed, 27 May 2026 20:14:00 +0000</pubDate><link>https://news.ycombinator.com/item?id=48299936</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48299936</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48299936</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "I'm Tired of Talking to AI"]]></title><description><![CDATA[
<p>The problem is that most of the people in my circle who are returning AI answers to emails and chat messages do not understand enough about the topic to know whether a question is interesting or not, which parts of the response are interesting, and which parts apply.<p>They seem to think they've more or less solved the problem by posting an LLM's response to the issue or concern I've raised.</p>
]]></description><pubDate>Wed, 27 May 2026 13:52:18 +0000</pubDate><link>https://news.ycombinator.com/item?id=48294397</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48294397</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48294397</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "Toxic chemical leak at a manufacturing facility in Orange County"]]></title><description><![CDATA[
<p>It's neurotoxic, a respiratory irritant, and an eye irritant.<p>No, if it's injected in your bloodstream it won't immediately kill you, but if you inhale a few milligrams of vapor you'll wish you could cough up a lung.<p>Also, the vapors are heavier than air, so if you fall in a ditch near the hypothetical blown tank you would likely suffocate and die.</p>
]]></description><pubDate>Sat, 23 May 2026 23:26:41 +0000</pubDate><link>https://news.ycombinator.com/item?id=48252633</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48252633</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48252633</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "The memory shortage is causing a repricing of consumer electronics"]]></title><description><![CDATA[
<p>What was most surprising about all this to me was this line:<p>> <i>So modern DRAM manufacturing is an extraordinarily complex and expensive process. Building a single state-of-the-art DRAM fabrication facility, a “fab,” will cost you about $15 to $20 billion; acquiring all the necessary equipment, like lithography tools and etching machines, will cost you another few billion; and then it’ll take you a few years of producing substandard and defective memory chips before your yields start to look competitive.</i><p>Extraordinarily complex and expensive!  And yet I look at all the money being shuffled around between Nvidia and Google and Microsoft and Amazon and Apple and can't help but think that this is a tiny amount in comparison to what they're moving around on the stock market buying shares in each other.<p>Apple in particular has $20B in its couch cushions and is very vertically integrated and hardware-focused. Apple silicon is currently made by TSMC, but it seems they'd be a prime candidate to spin up their own memory fab.<p>I suppose the biggest problem to current executives at each company is the "few years" until that investment yields results, in the short term it's better to pay through the nose and buy GPUs with HBM at any price.</p>
]]></description><pubDate>Fri, 22 May 2026 00:57:56 +0000</pubDate><link>https://news.ycombinator.com/item?id=48230679</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48230679</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48230679</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "Tracking Starbucks' 'widely recyclable' cups: none ended up at recycling"]]></title><description><![CDATA[
<p>I worked at a plastic furniture manufacturer in Indiana for a few projects.<p>They got paid to accept bales of recycled "HDPE" that they could mix at between 10 and 30% into their virgin materials. They get paid to accept it! Negative profit for the waste management company, pure profit for the "user".<p>This worked best on black, coffee, slate grey, mahogany - you get the idea - the whites and tans and bright colors were basically pure virgin material (and their own internally-recycled offcuts of dyed virgin materials of matching colors) even though their FAQ states:<p>> <i>What percentage of recycled materials are used?</i><p>> <i>The percentage of recycled materials in our lumber can vary depending on the availability of post-consumer and post-industrial plastics. We continuously strive to maximize the use of recycled content in every piece of lumber.</i><p>Personally, I don't think that the fact that you started with pure virgin material, extruded some plastic, cut it up and used most of it, but put some of what was virgin material a few hours ago back into the grinder and extruder makes the resulting plastic "recycled".</p>
]]></description><pubDate>Wed, 20 May 2026 20:04:14 +0000</pubDate><link>https://news.ycombinator.com/item?id=48213339</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48213339</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48213339</guid></item><item><title><![CDATA[New comment by LeifCarrotson in "Map of Metal"]]></title><description><![CDATA[
<p>Oh, that kind of metal and EDM.<p>I clicked into this thread expecting hobbyist/hacker machining with steel and brass and aluminum, and was surprised to see someone getting into electrical discharge machining. Those hair-fine wires, milled graphite electrodes, and ultrapure water baths can achieve incredible precision but are challenging even in an industrial context, though I know a few have made it work in their garage.<p>But you meant electronic dance music.</p>
]]></description><pubDate>Wed, 20 May 2026 17:55:53 +0000</pubDate><link>https://news.ycombinator.com/item?id=48211523</link><dc:creator>LeifCarrotson</dc:creator><comments>https://news.ycombinator.com/item?id=48211523</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48211523</guid></item></channel></rss>