<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: jjmarr</title><link>https://news.ycombinator.com/user?id=jjmarr</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Thu, 28 May 2026 21:13:33 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=jjmarr" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by jjmarr in "Citing 'severe' math deficits, UC faculty demand a return to SAT tests for STEM"]]></title><description><![CDATA[
<p>I attended a specialized math and science program (MaCS) in the TDSB. It was gutted by removing selective admissions in favour of a lottery, precisely because of the report you've cited.<p>The "levelling" is real in Canada and good private schools often manage to skip multiple grade levels.<p>Funnily enough, I've seen the opposite in the USA. My highly driven American friends somehow manage to get entire associate's degrees before finishing high school, which is unthinkable in Canada.</p>
]]></description><pubDate>Thu, 28 May 2026 15:59:23 +0000</pubDate><link>https://news.ycombinator.com/item?id=48310831</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48310831</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48310831</guid></item><item><title><![CDATA[New comment by jjmarr in "Magnifica Humanitas"]]></title><description><![CDATA[
<p>Nuclear weapons originally led to a world in which 20-30 countries established atomic bomb programs.<p>Instead, the global powers blocked nuclear technology from disseminating to most countries.</p>
]]></description><pubDate>Tue, 26 May 2026 01:42:11 +0000</pubDate><link>https://news.ycombinator.com/item?id=48274001</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48274001</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48274001</guid></item><item><title><![CDATA[New comment by jjmarr in "Anthropic Cofounder Chris Olah's Remarks on Pope Leo XIV's "Magnifica Humanitas""]]></title><description><![CDATA[
<p>It's unclear how agentic LLMs are going to automate farming in the Global South.</p>
]]></description><pubDate>Mon, 25 May 2026 20:08:46 +0000</pubDate><link>https://news.ycombinator.com/item?id=48271084</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48271084</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48271084</guid></item><item><title><![CDATA[New comment by jjmarr in "Why Japanese companies do so many different things"]]></title><description><![CDATA[
<p>> but in retrospect and in comparison to others most people don’t want to give up what they have and go back in time.<p>And in the long-term, people start fleeing the "stable" countries for already-grown ones.</p>
]]></description><pubDate>Fri, 22 May 2026 21:39:33 +0000</pubDate><link>https://news.ycombinator.com/item?id=48242032</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48242032</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48242032</guid></item><item><title><![CDATA[New comment by jjmarr in "C++26 Shipped a SIMD Library Nobody Asked For"]]></title><description><![CDATA[
<p>I praise Claude and hate AI articles because I could've asked Claude to dumb down the debate if I wanted.<p>Articles should be high information density and summarizable with Claude.</p>
]]></description><pubDate>Sun, 17 May 2026 06:57:16 +0000</pubDate><link>https://news.ycombinator.com/item?id=48166639</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48166639</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48166639</guid></item><item><title><![CDATA[New comment by jjmarr in "Windows 9x Subsystem for Linux"]]></title><description><![CDATA[
<p>> or (completely airgapped) for some industrial tool with drivers/software provided by a company that has been defunct for 25+ years.<p>this is a juicy enough target to justify such a virus.</p>
]]></description><pubDate>Sat, 16 May 2026 18:31:21 +0000</pubDate><link>https://news.ycombinator.com/item?id=48162566</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48162566</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48162566</guid></item><item><title><![CDATA[New comment by jjmarr in "Waymo updates 3,800 robotaxis after they 'drive into standing water'"]]></title><description><![CDATA[
<p>I traveled to Austin 3 weeks ago and there were entire highways not on Google Maps.<p>Apparently they were built in just a few months.</p>
]]></description><pubDate>Fri, 15 May 2026 20:36:33 +0000</pubDate><link>https://news.ycombinator.com/item?id=48153475</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48153475</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48153475</guid></item><item><title><![CDATA[New comment by jjmarr in "The old world of tech is dying and the new cannot be born"]]></title><description><![CDATA[
<p>The hardest part about Chinese is "weird spelling" because the written language is a separate language than the spoken one.<p>If you're using pinyin it's already easier than English.</p>
]]></description><pubDate>Fri, 15 May 2026 17:54:42 +0000</pubDate><link>https://news.ycombinator.com/item?id=48151702</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48151702</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48151702</guid></item><item><title><![CDATA[New comment by jjmarr in "The old world of tech is dying and the new cannot be born"]]></title><description><![CDATA[
<p>English is one of the most difficult languages to learn, because there's so many irregular sentence/word constructions + irregular pronunciations due to vowel shift + foreign loan words like French/Latin that must be pronounced differently.<p>Mandarin eliminates all of these problems. The tones and characters are difficult, sure, but questions and answers being grammatically identical along with consistent pinyin is a lifesaver.</p>
]]></description><pubDate>Fri, 15 May 2026 15:28:04 +0000</pubDate><link>https://news.ycombinator.com/item?id=48149922</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48149922</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48149922</guid></item><item><title><![CDATA[New comment by jjmarr in "Show HN: Race to the Bottom"]]></title><description><![CDATA[
<p>Would be cool if it ran until you had an intransitive preference. A is worse than B, which is worse than C, which is worse than A.<p>I thought the point was to show how ranking industries based on "evil vibes" is subjective.</p>
]]></description><pubDate>Fri, 15 May 2026 01:54:44 +0000</pubDate><link>https://news.ycombinator.com/item?id=48143607</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48143607</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48143607</guid></item><item><title><![CDATA[New comment by jjmarr in "Linux gaming is faster because Windows APIs are becoming Linux kernel features"]]></title><description><![CDATA[
<p>China solved this years ago with mandatory ID verification to play video games.<p><a href="https://en.wikipedia.org/wiki/Real-name_system_for_online_games_in_China" rel="nofollow">https://en.wikipedia.org/wiki/Real-name_system_for_online_ga...</a><p>This was to prevent children from getting addicted but also leads to real life penalties for cheating in video games.</p>
]]></description><pubDate>Thu, 14 May 2026 05:45:02 +0000</pubDate><link>https://news.ycombinator.com/item?id=48131516</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48131516</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48131516</guid></item><item><title><![CDATA[New comment by jjmarr in "Starship V3"]]></title><description><![CDATA[
<p>Technically it'd make sense for Space Force, which is trying to get money for their own SOCOM unit.[1] The Marines might not be happy since they'd prefer the budget for themselves.<p>> For the same money you could spin up a bunch more QRFs and scatter them over the globe.<p>The argument Space Force could make is this would allow for higher talent density than dispersed QRFs. The same unit could also attack satellites or space stations.<p>[1] <a href="https://www.defenseone.com/policy/2025/12/space-force-special-operations-command-congress-has-questions-too/410245/" rel="nofollow">https://www.defenseone.com/policy/2025/12/space-force-specia...</a></p>
]]></description><pubDate>Thu, 14 May 2026 05:42:00 +0000</pubDate><link>https://news.ycombinator.com/item?id=48131495</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48131495</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48131495</guid></item><item><title><![CDATA[New comment by jjmarr in "Cisco workforce reductions"]]></title><description><![CDATA[
<p>Had OP immediately sold, they would've provided a price signal that layoffs are bad <i>in addition</i> to making money.</p>
]]></description><pubDate>Thu, 14 May 2026 05:25:08 +0000</pubDate><link>https://news.ycombinator.com/item?id=48131402</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48131402</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48131402</guid></item><item><title><![CDATA[New comment by jjmarr in "Starship V3"]]></title><description><![CDATA[
<p>> The cost would be insane.<p>Yeah, that's why it'd be a good way for SpaceX to make money.</p>
]]></description><pubDate>Wed, 13 May 2026 06:04:40 +0000</pubDate><link>https://news.ycombinator.com/item?id=48118385</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48118385</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48118385</guid></item><item><title><![CDATA[New comment by jjmarr in "Starship V3"]]></title><description><![CDATA[
<p>I don't know why space marines aren't a thing yet. The USA could put a rapid reaction force of Tier 1 Special Forces onto a space station and deploy them through atmospheric re-entry anywhere on Earth within 30 minutes.<p>I can only assume "too easy to track" is part of the logic.<p>Ditto for kinetic strikes. That was super hyped up.</p>
]]></description><pubDate>Wed, 13 May 2026 05:05:49 +0000</pubDate><link>https://news.ycombinator.com/item?id=48118065</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48118065</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48118065</guid></item><item><title><![CDATA[New comment by jjmarr in "Software engineering may no longer be a lifetime career"]]></title><description><![CDATA[
<p>the "learn to code" campaign began ramping up in 2013. If you started undergrad in 2016 you would've graduated right into the covid market.<p><a href="https://en.wikipedia.org/wiki/Learn_to_Code#Policy_impact" rel="nofollow">https://en.wikipedia.org/wiki/Learn_to_Code#Policy_impact</a><p>I think the hype peaked around 2016 where Democrats were portrayed as out of touch for saying laid off coal miners could just "learn to code". By 2019 it was a cliché used to mock laid off journalists on Twitter.</p>
]]></description><pubDate>Mon, 11 May 2026 16:59:19 +0000</pubDate><link>https://news.ycombinator.com/item?id=48097573</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48097573</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48097573</guid></item><item><title><![CDATA[New comment by jjmarr in "Space Cadet Pinball on Linux"]]></title><description><![CDATA[
<p>The line represents a physical tunnel through which the ball can travel.</p>
]]></description><pubDate>Sun, 10 May 2026 13:10:34 +0000</pubDate><link>https://news.ycombinator.com/item?id=48083709</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48083709</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48083709</guid></item><item><title><![CDATA[New comment by jjmarr in "How do I deal with memory leaks? (2022)"]]></title><description><![CDATA[
<p>I'm referring to C heavily using pointer arithmetic.<p>If you wanted to make it easier to convert arbitrary functions to use your shiny new resizable type, you end up with something simulator to iterators.</p>
]]></description><pubDate>Sun, 10 May 2026 10:37:28 +0000</pubDate><link>https://news.ycombinator.com/item?id=48082701</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48082701</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48082701</guid></item><item><title><![CDATA[New comment by jjmarr in "AWS North Virginia data center outage – recovery to take hours"]]></title><description><![CDATA[
<p>Oceans have salt. Saltwater is bad for electronics beyond normal water. You also need a sufficient level of water depth otherwise it'll warm to surface temperature. It also needs to be price-competitive with traditional evaporative cooling.<p>Toronto is the textbook example of this working. It's on a freshwater lake that is deep relatively close to the shore, and the downtown has expensive real estate blocking traditional methods.<p><a href="https://en.wikipedia.org/wiki/Deep_Lake_Water_Cooling_System" rel="nofollow">https://en.wikipedia.org/wiki/Deep_Lake_Water_Cooling_System</a></p>
]]></description><pubDate>Fri, 08 May 2026 22:17:03 +0000</pubDate><link>https://news.ycombinator.com/item?id=48069443</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48069443</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48069443</guid></item><item><title><![CDATA[New comment by jjmarr in "How do I deal with memory leaks? (2022)"]]></title><description><![CDATA[
<p>> Imagine if this was a new language that the dev community was seeing for the first time. It's hard to imagine it gaining much traction.<p>But it's not a new language. It's backwards compatible with C.<p>So "iterators" behave the same as pointers, since that's how you'd iterate through an array. You can add and subtract, then pass them to other functions.<p>You can't just have a function that returns a vector of strings, because that function would do an allocation. When is it deallocated? Before unique_ptr (the guide was written before), it'd be the caller's responsibility to manually do so.<p>Meaning you have to assign the output of that function to a variable every single time and manually remember to deallocated it or you get a memory leak.<p>C avoids this with `strtok` by destructively modifying the string in place. This is arguably worse.<p>If you were designing a new, non-GC, language, you'd have good ownership semantics and not allow pointer arithmetic. That'd be Rust.</p>
]]></description><pubDate>Fri, 08 May 2026 20:33:35 +0000</pubDate><link>https://news.ycombinator.com/item?id=48068427</link><dc:creator>jjmarr</dc:creator><comments>https://news.ycombinator.com/item?id=48068427</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48068427</guid></item></channel></rss>