<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: scythe</title><link>https://news.ycombinator.com/user?id=scythe</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Fri, 17 Apr 2026 08:16:14 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=scythe" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by scythe in "Helium is hard to replace"]]></title><description><![CDATA[
<p>>The vast majority of MRI machines used today use superconducting magnets made from niobium-titanium (NbTi), which becomes superconducting at 9.2 degrees above absolute zero. This is well below the boiling point of any other coolant, making liquid helium the only practical option for cooling the magnets.<p>Well, this is part of it. The other issue is that the superconducting phase diagram has two limits: the transition temperature Tc and the upper critical magnetic field Hc. The magnetic field limit is generally highest at absolute zero and drops steeply with temperature. Even for the superconductors with Tc as high as 120 K the Hc at 20 K will be much less than the Hc at 4 K. So in order to make powerful superconducting magnets you need helium regardless of what superconductor you use, since nothing has broken this pattern.</p>
]]></description><pubDate>Fri, 10 Apr 2026 19:34:33 +0000</pubDate><link>https://news.ycombinator.com/item?id=47722646</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47722646</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47722646</guid></item><item><title><![CDATA[New comment by scythe in "Iran demands Bitcoin fees for ships passing Hormuz during ceasefire"]]></title><description><![CDATA[
<p>Pakistan, the mediator of the agreement, declared that a ceasefire in Lebanon was part of the agreement when the agreement was announced:<p><a href="https://www.reuters.com/world/asia-pacific/what-us-iran-israel-pakistan-have-said-about-ceasefire-2026-04-08/" rel="nofollow">https://www.reuters.com/world/asia-pacific/what-us-iran-isra...</a><p>>Pakistani Prime Minister Shehbaz Sharif announced the ceasefire between Iran  and the United States on X, saying the two sides agreed to an immediate ceasefire everywhere, including Lebanon, where Israel launched strikes.<p>This suggests that either the Americans are lying or they did not read the agreement carefully before signing. Either way I don't think it's a good look for the United States.<p>The US has plenty of ability to force Israel to stop its invasion of Lebanon and it has done similar things twice before by economic means. All parties to the agreement are aware of this.</p>
]]></description><pubDate>Wed, 08 Apr 2026 17:51:00 +0000</pubDate><link>https://news.ycombinator.com/item?id=47693769</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47693769</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47693769</guid></item><item><title><![CDATA[New comment by scythe in "US and Iran agree to provisional ceasefire"]]></title><description><![CDATA[
<p>>Calling Iranians who are against their current government “morally compromised” is real reprehensible for someone sitting in an armchair.<p>What I said was that anyone who wants their country to meet the fate of other countries the US has attempted to regime change is morally compromised. Simply hoping that the Islamic regime will go away is completely rational. Knowing that it will definitely fail and wanting to try it anyway is insanity.<p>And the diaspora fools cheering for more bombs and destruction are also in armchairs. They have no sympathy from me.<p>>Hoping foreign power can help overthrow the domestic lord is nothing new. That’s literally how the U.S. gained its independence with French military assistance.<p>Not regime change, a rebellion.<p>>And to your point, US interventions saved South Korea, Kuwait, Grenada, Bosnia, in addition to Panama.<p>South Korea was a response to invasion, Kuwait was a response to invasion, Grenada was a coup (response to a coup — edge case because the end state was much easier to define and also the country is minuscule), Bosnia was a rebellion. None of these are regime change.<p>>Kurds in Iraq can attest to this.<p>Also a rebellion. You might want to recheck the criteria.<p>>We don’t know how Iraq and Venezuela will turn out in the current timeline either.<p>23 years of civil war is too many. You can't just say "well eventually it worked out", that could justify anything. Other dictatorships have ended faster without violence.  Venezuela was not a real regime change war because a deal was made with the VP before the invasion and also the Bolivarians are still in power.</p>
]]></description><pubDate>Wed, 08 Apr 2026 14:55:39 +0000</pubDate><link>https://news.ycombinator.com/item?id=47691113</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47691113</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47691113</guid></item><item><title><![CDATA[New comment by scythe in "US and Iran agree to provisional ceasefire"]]></title><description><![CDATA[
<p>> There are news reports of Iranian expats and opponents within Iranian who are disappointed with the ceasefire. They wanted trump to go further and destroy the regime.<p>Most of them realized their mistake:<p><a href="https://www.economist.com/middle-east-and-africa/2026/04/01/irans-opposition-in-exile-is-rethinking-its-support-for-the-war" rel="nofollow">https://www.economist.com/middle-east-and-africa/2026/04/01/...</a><p>Iranians hoping that war and death will save them are chasing a gruesome mirage. The US has successfully liberated exactly one country by regime change since 1945: Panama in 1989. Every other intervention has either supported a rebellion (secession) instead of a revolution, or it has ended in failure (Afghanistan, Vietnam, Somalia) or a prolonged civil war (Iraq, Libya, Yemen). Anyone hoping for such a fate to befall their own country is morally compromised.</p>
]]></description><pubDate>Wed, 08 Apr 2026 02:47:24 +0000</pubDate><link>https://news.ycombinator.com/item?id=47684379</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47684379</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47684379</guid></item><item><title><![CDATA[New comment by scythe in "US and Iran agree to provisional ceasefire"]]></title><description><![CDATA[
<p>JCPoA compliance was verified by the US and the IAEA regularly until the agreement was suspended by Donald Trump in 2018.</p>
]]></description><pubDate>Wed, 08 Apr 2026 02:38:33 +0000</pubDate><link>https://news.ycombinator.com/item?id=47684294</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47684294</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47684294</guid></item><item><title><![CDATA[New comment by scythe in "US and Iran agree to provisional ceasefire"]]></title><description><![CDATA[
<p>A lot of stuff leaked today:<p><a href="https://www.nytimes.com/2026/04/07/us/politics/trump-iran-war.html" rel="nofollow">https://www.nytimes.com/2026/04/07/us/politics/trump-iran-wa...</a></p>
]]></description><pubDate>Wed, 08 Apr 2026 02:25:44 +0000</pubDate><link>https://news.ycombinator.com/item?id=47684174</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47684174</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47684174</guid></item><item><title><![CDATA[Right to repair: Why the US military can't fix much of its own equipment]]></title><description><![CDATA[
<p>Article URL: <a href="https://taskandpurpose.com/tech-tactics/us-military-right-to-repair/">https://taskandpurpose.com/tech-tactics/us-military-right-to-repair/</a></p>
<p>Comments URL: <a href="https://news.ycombinator.com/item?id=47648529">https://news.ycombinator.com/item?id=47648529</a></p>
<p>Points: 36</p>
<p># Comments: 9</p>
]]></description><pubDate>Sun, 05 Apr 2026 12:07:49 +0000</pubDate><link>https://taskandpurpose.com/tech-tactics/us-military-right-to-repair/</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47648529</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47648529</guid></item><item><title><![CDATA[New comment by scythe in "F-15E jet shot down over Iran"]]></title><description><![CDATA[
<p>It's not entirely impossible that someone smuggled in some Chinese or Russian kit in the last month. It would certainly be an interesting development. I wouldn't be too surprised if there are some sympathetic people in the Pakistani military prone to misplacing things.</p>
]]></description><pubDate>Sat, 04 Apr 2026 03:36:52 +0000</pubDate><link>https://news.ycombinator.com/item?id=47635435</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47635435</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47635435</guid></item><item><title><![CDATA[New comment by scythe in "Solar and batteries can power the world"]]></title><description><![CDATA[
<p>It's probably fairly high, considering the existence of the sodium-sulfur battery. It's not economically competitive since it operates at high temperature, but it's based on very abundant materials.</p>
]]></description><pubDate>Fri, 03 Apr 2026 17:01:12 +0000</pubDate><link>https://news.ycombinator.com/item?id=47629170</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47629170</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47629170</guid></item><item><title><![CDATA[New comment by scythe in "A forecast of the fair market value of SpaceX's businesses"]]></title><description><![CDATA[
<p>>This excuse only works if who built the bridge isn't central to the discussion.<p>It isn't central to the discussion. The appearance of corruption is clear; nailing down the culprit is difficult. It isn't reasonable to expect people to have a theory of corruption in order to complain about it.<p>>Otherwise this is just generic conspiratorial thinking<p>The perception of corruption is not a conspiracy theory. Corruption is an ordinary financially motivated crime, while conspiracy theories usually involve some kind of grandiose or mystical objective ("new world order").<p>Anyway, the question is moot because the only possible answer is "the regulatory authorities". We know who makes the rules! I just didn't want to tolerate this kind of fallacious nitpicking.</p>
]]></description><pubDate>Thu, 02 Apr 2026 20:46:02 +0000</pubDate><link>https://news.ycombinator.com/item?id=47619934</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47619934</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47619934</guid></item><item><title><![CDATA[New comment by scythe in "A forecast of the fair market value of SpaceX's businesses"]]></title><description><![CDATA[
<p>The unknown subject is a valid construction in language. It is <i>not</i> necessary to be able to answer "who's they?". It is semantically equivalent to saying "I knew the rules would be changed."<p>There are also perfectly ordinary situations in which this pattern is used to imply the influence of an unknown party. "They built a bridge over the river." Clearly the speaker does not believe that bridges over rivers construct themselves. She doesn't need to know who built the bridge.</p>
]]></description><pubDate>Thu, 02 Apr 2026 18:43:13 +0000</pubDate><link>https://news.ycombinator.com/item?id=47618484</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47618484</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47618484</guid></item><item><title><![CDATA[New comment by scythe in "Unsubscribe from the Church of Graphs"]]></title><description><![CDATA[
<p>This also distorts the shoplifting statistics. If two stores have equal rates of shoplifting but one has boxes and the other doesn't, they are not at equal risk. The one with boxes is at more risk. Flat shoplifting rates while boxes proliferate mean things got worse. (You can argue that boxes do nothing, but you would need strong evidence, cf parachutes.)<p>The number of shoplifting incidents is also a weak metric. Most shoplifting is not of serious economic concern. The problem is with repeat offenders and those doing it for profit. The value of merchandise lost is a much better metric but stores may be reluctant to share this due to concerns about insurance rates and public perception.<p>Crime statistics are very hard. And state capacity is declining, sadly. We can't expect bloggers to pick up the slack.</p>
]]></description><pubDate>Wed, 01 Apr 2026 21:47:28 +0000</pubDate><link>https://news.ycombinator.com/item?id=47606943</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47606943</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47606943</guid></item><item><title><![CDATA[New comment by scythe in "AI for American-produced cement and concrete"]]></title><description><![CDATA[
<p>The website talks about making cement, but only describes making concrete. Making concrete involves mixing cement and fillers with water under controlled conditions. Making cement involves heating calcium carbonates and oxides with silicon dioxide or calcium silicate to form alite at a temperature of (so far as we understand) no less than 1250 C. Usually this is done with fossil fuels and any impurities in the raw materials (which are cost-constrained) go up the flue, making cement plants rather polluting. Carbon dioxide is a nearly inevitable byproduct (CaCO3 + SiO2 >> CaSiO3 + CO2) and is either captured at source (not implemented at most facilities) or released.<p>There is plenty of room for improvement in cement production. I'm not sure exactly how to apply AI to it but I guess I was hoping for more than this. If we are going to have the infrastructure renaissance that keeps being talked up by reformists of various stripes, we need more cement.<p>South America is also a surprising laggard in cement production, which is odd considering they have the materials and they need the roads. I think that environmental concerns and a continental aversion to coal might contribute.</p>
]]></description><pubDate>Wed, 01 Apr 2026 19:06:44 +0000</pubDate><link>https://news.ycombinator.com/item?id=47605111</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47605111</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47605111</guid></item><item><title><![CDATA[New comment by scythe in "How Reverse Game Theory Could Solve the Housing Shortage"]]></title><description><![CDATA[
<p>Certainly, building new housing works well at a policy level. But calling for new housing doesn't seem to work at a political level. We've been fighting this fight ever since the financial crisis and every election cycle brings us a few victories with an equal number of reversals. And it isn't only within the left that the opposition arises; it wears red in progressive neighborhoods, but it seems to have a taste for brown when that's convenient.<p>I don't think that the urbanist movement can succeed if it is driven by policy wonks who want to throw out the rulebook and impose reforms from the ivory tower without a real small-d democratic political strategy. Many of us are used to fighting the political battle against climate change by being Absolutely Correct and expecting that Science with her indefatigable armies of Reality will guard the flanks. A fully economic fight like this one just doesn't have the same kind of inevitability. Every step forward on the ground weakens the sense of urgency in the legislature, leading to an equilibrium trap without a vigorous political movement that can hold momentum.<p>Nerds do not usually want to do politics, but in housing you have to do politics.</p>
]]></description><pubDate>Mon, 30 Mar 2026 15:24:35 +0000</pubDate><link>https://news.ycombinator.com/item?id=47575497</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47575497</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47575497</guid></item><item><title><![CDATA[New comment by scythe in "World Happiness Report 2026"]]></title><description><![CDATA[
<p>Another big surprise is Mexico. It seems like every day there's another gory story about a bunch of people disappearing or getting shot in a gang war. But they're the second-highest ranked in North America at #12, behind only Costa Rica.<p>Israel I think is similar to Costa Rica in that whatever problems Israelis have, they look around at their neighbors and realize how much worse it could be.</p>
]]></description><pubDate>Thu, 19 Mar 2026 20:06:31 +0000</pubDate><link>https://news.ycombinator.com/item?id=47445135</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47445135</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47445135</guid></item><item><title><![CDATA[New comment by scythe in "Silicon Valley's "Pronatalists" Killed WFH. The Strait of Hormuz Brought It Back"]]></title><description><![CDATA[
<p>I associate it with cool summers which are rare in the US. The rain and dark won't be everyone's cup of tea, but other places with similarly cool summers either have very harsh winters or rhyme with "Nabisco".</p>
]]></description><pubDate>Tue, 17 Mar 2026 18:57:24 +0000</pubDate><link>https://news.ycombinator.com/item?id=47416694</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47416694</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47416694</guid></item><item><title><![CDATA[New comment by scythe in "Silicon Valley's "Pronatalists" Killed WFH. The Strait of Hormuz Brought It Back"]]></title><description><![CDATA[
<p>I have been thinking that this is a reason why the megacities are winning. In the largest cities, a couple can cohabitate and both find jobs. In smaller cities, you have to get lucky, and if one partner's job falls through (which may be unavoidable) then you might have to move! In a one-income household you can live in a city with one industry. Two is a coordination problem. The eleven largest cities have reached escape velocity. Detroit is hovering right on the edge. Seattle has favorable climate and a port. Other cities are boom and bust.</p>
]]></description><pubDate>Tue, 17 Mar 2026 14:50:08 +0000</pubDate><link>https://news.ycombinator.com/item?id=47413509</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47413509</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47413509</guid></item><item><title><![CDATA[New comment by scythe in "Silicon Valley's "Pronatalists" Killed WFH. The Strait of Hormuz Brought It Back"]]></title><description><![CDATA[
<p>Funny to read this as a consultant. My job is an hour away from my job.</p>
]]></description><pubDate>Tue, 17 Mar 2026 14:35:15 +0000</pubDate><link>https://news.ycombinator.com/item?id=47413291</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47413291</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47413291</guid></item><item><title><![CDATA[New comment by scythe in "Beyond has dropped “meat” from its name and expanded its high-protein drink line"]]></title><description><![CDATA[
<p>Yeah, I never understood what Beyond's core innovation was. Impossible had that whole synthetic heme thing going on. Beyond seemed almost like opportunistic mimicry. But Impossible turned out to be pretty expensive IIRC.</p>
]]></description><pubDate>Tue, 17 Mar 2026 03:24:51 +0000</pubDate><link>https://news.ycombinator.com/item?id=47408230</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47408230</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47408230</guid></item><item><title><![CDATA[New comment by scythe in "Beyond has dropped “meat” from its name and expanded its high-protein drink line"]]></title><description><![CDATA[
<p>The key difference between the old vegans and the new vegans is hiding in plain sight. It's the Internet. It used to be that vegans went to vegan restaurants and had their own particular tradition of vegan cookery. People didn't just become vegan in isolation like they do today. The acculturated vegans still exist and I think that's who gp is referring to in that statement. The Internet vegans are different but they aren't that numerous — few people even today would make such a change in their life based on something they read online.</p>
]]></description><pubDate>Tue, 17 Mar 2026 03:23:08 +0000</pubDate><link>https://news.ycombinator.com/item?id=47408220</link><dc:creator>scythe</dc:creator><comments>https://news.ycombinator.com/item?id=47408220</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47408220</guid></item></channel></rss>