<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: summa_tech</title><link>https://news.ycombinator.com/user?id=summa_tech</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Fri, 14 Aug 2026 23:25:58 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=summa_tech" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by summa_tech in "Spaghettifying DRAM"]]></title><description><![CDATA[
<p>One hopes that a hypervisor would not expose hardware control registers directly in the first place, except ones deliberately designed for virtualization support.<p>Otherwise, the guest is running effectively at the same privilege level as the hypervisor (that's useful sometimes, but probably not intended in most applications).</p>
]]></description><pubDate>Thu, 13 Aug 2026 15:18:20 +0000</pubDate><link>https://news.ycombinator.com/item?id=49287334</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=49287334</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49287334</guid></item><item><title><![CDATA[New comment by summa_tech in "Extreme 220GHz+Broadband Silicon Capacitor X2SC 0201M 22nF BV11"]]></title><description><![CDATA[
<p>I, too, had wondered; this seems particularly common in the US. My best theory is that in rough handwriting, n and u/μ can look pretty similar, and everyone sort of agreed to only use u to reduce ambiguity.</p>
]]></description><pubDate>Mon, 10 Aug 2026 20:30:08 +0000</pubDate><link>https://news.ycombinator.com/item?id=49249278</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=49249278</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49249278</guid></item><item><title><![CDATA[New comment by summa_tech in "The German Mittelstand"]]></title><description><![CDATA[
<p>Laminated wood veneer for legs, plywood for seat. Not as disposable as the eternal LACK, but also not bent wood.</p>
]]></description><pubDate>Mon, 10 Aug 2026 13:12:17 +0000</pubDate><link>https://news.ycombinator.com/item?id=49243172</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=49243172</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49243172</guid></item><item><title><![CDATA[New comment by summa_tech in "10 REM"_(C2SLFF4"]]></title><description><![CDATA[
<p>It certainly tarnishes the shine to have a per-OS-version table of offsets to patch ;(</p>
]]></description><pubDate>Wed, 22 Jul 2026 14:39:18 +0000</pubDate><link>https://news.ycombinator.com/item?id=49007576</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=49007576</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49007576</guid></item><item><title><![CDATA[New comment by summa_tech in "10 REM"_(C2SLFF4"]]></title><description><![CDATA[
<p>It always feels a bit like lost magic. But at the same time, it's also something that was only enabled by the very high determinism of these old home systems. The design relies on having fixed RAM locations, no multiprocessing, etc.<p>Incredible to find out that typing the paper program would not have worked, though. And in such a disappointing way no less.</p>
]]></description><pubDate>Wed, 22 Jul 2026 14:21:56 +0000</pubDate><link>https://news.ycombinator.com/item?id=49007316</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=49007316</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49007316</guid></item><item><title><![CDATA[New comment by summa_tech in "Multi-Primary Color Display Emerges as Next-Gen Color Reproduction Technology"]]></title><description><![CDATA[
<p>Excellent explanation.<p>I'd like to add that no light source can lie outside the horseshoe of the CIE xyz diagram: pure wavelengths are points on the curved line, everything that mixes them moves towards the inside of the space. So you're stuck with triangles that fit within it.</p>
]]></description><pubDate>Fri, 17 Jul 2026 14:25:42 +0000</pubDate><link>https://news.ycombinator.com/item?id=48947755</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=48947755</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48947755</guid></item><item><title><![CDATA[New comment by summa_tech in "Martha Lillard, last US polio patient using iron lung, dies at 78 in Oklahoma"]]></title><description><![CDATA[
<p>Well, it's complicated. As I understand, one of the polio vaccines - the oral one - has an unusual quirk.<p>The live virus used in it can reproduce and spread in low-vaccination communities. While the vaccine version of it will not cause paralysis, it can and occasionally does mutate back into a pathogenic variant.<p>So we're sort of maintaining a reservoir of polio, really.</p>
]]></description><pubDate>Sun, 12 Jul 2026 05:33:16 +0000</pubDate><link>https://news.ycombinator.com/item?id=48878583</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=48878583</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48878583</guid></item><item><title><![CDATA[New comment by summa_tech in "Rotman Lens"]]></title><description><![CDATA[
<p>Imagine a power splitter + phase shifter that produces a correct phase shift for each element in a phased array to produce a directional beam from one radio transceiver.<p>Now this clever arrangement, instead of having only one radio transceiver port, has multiple. And each of those ports corresponds to a different set of phase shifts, producing a directional beam at a different azimuth angle.<p>And because this is an entirely passive device, it's linear, and all ports can be active at the same time (principle of superposition essentially). So you can use a single phased antenna array to serve multiple directional beams at the same time.</p>
]]></description><pubDate>Mon, 06 Jul 2026 22:52:46 +0000</pubDate><link>https://news.ycombinator.com/item?id=48811530</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=48811530</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48811530</guid></item><item><title><![CDATA[New comment by summa_tech in ""Software Engineering" Is Not Engineering (2005)"]]></title><description><![CDATA[
<p>Right! I think a lot of people, who have not done a lot of "things you can kick" engineering, have a very romantic view of it. Especially the relationship with whoever is nominally setting the goals of the project.<p>The physics works perfectly, of course. But physics is only a third of the constraint in engineering. The other two thirds are project goals and convention.<p>Project goals are horribly underspecified, every time. It's incredibly rare to be given a project that is completely constrained on that side, and if you do get one, most of the time it's physically impossible to achieve. This is because the people who write those specifications not doing engineering, they're doing marketing or sales or just had a cool idea. Sometimes that can even be the engineer themselves :-) So it's up to the engineer to fill in the gap, and they do it with experience and a sense of aesthetics, of sorts.<p>Convention is what constrains the physical possibilities of engineering to the practical. Yes, you can build anything and make it work, possibly even better than what everyone else builds. But you will have to invent and construct a lot of new technologies before you can build your perfect mousetrap. So, you settle on standard components and build a decent one instead. But this introduces a gap between physics and engineering, too. A bit of no-man's land that you can reach into to produce truly great results. But it's up to the engineer to know when it's worth it.</p>
]]></description><pubDate>Mon, 06 Jul 2026 13:16:10 +0000</pubDate><link>https://news.ycombinator.com/item?id=48804167</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=48804167</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48804167</guid></item><item><title><![CDATA[New comment by summa_tech in "Tokenmaxxing is dead, long live tokenmaxxing"]]></title><description><![CDATA[
<p>As a matter of fact, Nature does regularly publish papers about wetting properties of water. In fact, it just published one last week, from Nature Physics:<p><a href="https://www.nature.com/articles/s41567-026-03299-z" rel="nofollow">https://www.nature.com/articles/s41567-026-03299-z</a><p>Scientists find more or less everything very interesting, even (especially?) things that are supposedly self-evident. You can both make a big splash disproving self-evident things, and much can be learned from it.</p>
]]></description><pubDate>Mon, 29 Jun 2026 11:48:31 +0000</pubDate><link>https://news.ycombinator.com/item?id=48718021</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=48718021</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48718021</guid></item><item><title><![CDATA[New comment by summa_tech in "Dostoyevsky isn't difficult"]]></title><description><![CDATA[
<p>If you can read more than one language, try reading translations into two or three different ones. It'll give you a different view of a book you enjoy: the translations will all have a different feel, in my experience.</p>
]]></description><pubDate>Thu, 25 Jun 2026 03:16:36 +0000</pubDate><link>https://news.ycombinator.com/item?id=48668387</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=48668387</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48668387</guid></item><item><title><![CDATA[New comment by summa_tech in "Usbliter8: an A12/A13 SecureROM Exploit"]]></title><description><![CDATA[
<p>On most modern Apple SoCs, including these two, there's an IOMMU dedicated to the USB complex (called the USB DART, perhaps DMA Address Remapping Table).<p>However, Boot ROM on these two chips does not program it; Apple probably felt that it was an unnecessary technical risk to do so. The Boot ROM code was well-verified and unlikely to contain bugs like buffer overflows. But nobody expected a hardware bug :)</p>
]]></description><pubDate>Wed, 24 Jun 2026 00:14:20 +0000</pubDate><link>https://news.ycombinator.com/item?id=48653467</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=48653467</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48653467</guid></item><item><title><![CDATA[New comment by summa_tech in "Beyond All Reason (Free Total Annihilation Inspired RTS)"]]></title><description><![CDATA[
<p>Sure, StarCraft is kind of a hybrid when you think about it. The guaranteed-hit model, the extremely simplified low vs high ground approach to determine if a shot is possible, etc. are pretty deterministic. But in more complicated situations it's still a lot less predictable than chess. Even the examples you're giving can only happen probabilistically outside very early game.<p>But I'm thinking about TA-style games, the topic of this discussion, which pride themselves on large armies. Though, to your point, early game of Supreme Commander is also quite chess-like, because of how restricted the set of opportunities is.</p>
]]></description><pubDate>Sun, 21 Jun 2026 19:59:55 +0000</pubDate><link>https://news.ycombinator.com/item?id=48622080</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=48622080</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48622080</guid></item><item><title><![CDATA[New comment by summa_tech in "Beyond All Reason (Free Total Annihilation Inspired RTS)"]]></title><description><![CDATA[
<p>Chess presents a comparatively small and, importantly, discrete set of choices at any moment. So it feels like it's a solvable logic puzzle: like it should be possible, at any moment, to make an optimal move. You can predict if you lose 2 or if you lose 3 pieces because of your next move, and you're expected to use this knowledge. The strategy of chess is about perfection in every turn.<p>RTSes present continuous, large choice spaces. So it doesn't really feel like as much of a logic puzzle, and perfection does not appear to be within ones grasp at every moment. Whether you'll lose 4 or 6 of the T2 fighter-bombers is not relevant. The strategy of RTSes is strategy of big plans and high level abstraction.</p>
]]></description><pubDate>Sun, 21 Jun 2026 17:37:25 +0000</pubDate><link>https://news.ycombinator.com/item?id=48620862</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=48620862</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48620862</guid></item><item><title><![CDATA[New comment by summa_tech in "Challenging the Narrative of European Decline"]]></title><description><![CDATA[
<p>He's basically repeating his mistake - underestimating the relevance of technological progress - from 28 years ago, except now it's explicitly in service of his political bias.<p>For your information: Paul Krugman is a Nobel memorial prize winning economist. He used the publicity of his award to become, essentially, a political commentator, including an opinion column in the most important American newspaper of record, the New York Times. He's not a random commenter on a website, without any ambitions of relevance. He uses the aura of being an eminent scientist to give his personal opinions a veneer of respectability that they perhaps do not merit.</p>
]]></description><pubDate>Thu, 18 Jun 2026 13:19:39 +0000</pubDate><link>https://news.ycombinator.com/item?id=48584870</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=48584870</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48584870</guid></item><item><title><![CDATA[New comment by summa_tech in "Challenging the Narrative of European Decline"]]></title><description><![CDATA[
<p>It's difficult to consider Krugman's takes seriously after his very flawed 1998 predictions. Perhaps he's uniquely poorly suited to understanding the role of technology in economic development, and is best described as an economist with a very limited outlook outside his narrow discipline?<p><a href="https://www.snopes.com/fact-check/paul-krugman-internets-effect-economy/" rel="nofollow">https://www.snopes.com/fact-check/paul-krugman-internets-eff...</a></p>
]]></description><pubDate>Thu, 18 Jun 2026 12:14:04 +0000</pubDate><link>https://news.ycombinator.com/item?id=48584163</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=48584163</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48584163</guid></item><item><title><![CDATA[New comment by summa_tech in "What happened to nerds?"]]></title><description><![CDATA[
<p>It became obvious / accepted wisdom that a moderately successful startup exit is the only way to have a decent future as a living person.<p>This used to be only one of many paths available to a nerd, but now: (a) academia is dead thanks to overly competitive publish-or-perish set-up (probably the biggest loss of the three), (b) corporate jobs do not pay enough to safely survive downturns that leave you jobless for extended periods, (c) government jobs have been made even more onerous and even less paying in real terms.<p>So everyone has to become a self-promoting, trend-chasing startup-founder type. Even if you don't found a startup, you have to be always ready for a new "business opportunity".</p>
]]></description><pubDate>Mon, 15 Jun 2026 12:20:57 +0000</pubDate><link>https://news.ycombinator.com/item?id=48540215</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=48540215</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48540215</guid></item><item><title><![CDATA[New comment by summa_tech in "Perlisisms (1982)"]]></title><description><![CDATA[
<p>Neat! What do you think about adding a "-2, -1, 0, +1, +2" agreement scale to each quote and showing the average instead of votes?<p>I think many of those are pretty subjective, and maybe not always right for everyone or for all time. But there are certainly going to be some universal pearls of wisdom, and neither of us can - by ourselves - tell which ones they are.</p>
]]></description><pubDate>Sun, 14 Jun 2026 16:14:05 +0000</pubDate><link>https://news.ycombinator.com/item?id=48528901</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=48528901</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48528901</guid></item><item><title><![CDATA[New comment by summa_tech in "Perlisisms (1982)"]]></title><description><![CDATA[
<p>Once you understand how a program works, get someone else to write it for you. Then, you will quickly find out your understanding was insufficient.</p>
]]></description><pubDate>Sun, 14 Jun 2026 16:09:32 +0000</pubDate><link>https://news.ycombinator.com/item?id=48528842</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=48528842</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48528842</guid></item><item><title><![CDATA[New comment by summa_tech in "Powering up a module from the IBM 604: an electronic calculator from 1948"]]></title><description><![CDATA[
<p>I don't think I've seen anything sufficiently RAM-like. The classic sense amplifier architecture tends to make this impractical. I guess modern Flash can store a few levels but that's a far cry from actual analog storage.<p>For a while, you could get things like bucket-brigade CCDs for analog signals (used for reverbs and suchlike). They're still made in small quantities, I think, by boutique operations like Xvive.<p>Also, there was the ISD ChipCorder, which was actual analog Flash. (Current devices are digital, but the old ones were for a while sold as "MLS ChipCorder" by Nuvoton.)</p>
]]></description><pubDate>Mon, 08 Jun 2026 10:24:48 +0000</pubDate><link>https://news.ycombinator.com/item?id=48443501</link><dc:creator>summa_tech</dc:creator><comments>https://news.ycombinator.com/item?id=48443501</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48443501</guid></item></channel></rss>