<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: penteract</title><link>https://news.ycombinator.com/user?id=penteract</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Sat, 12 Sep 2026 03:25:52 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=penteract" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by penteract in "The Waymo effect: how AI is quietly making research less collaborative"]]></title><description><![CDATA[
<p>a) Self driving was far from completely solved before LLMs.<p>b) Text generation essentially means passing the Turing test, which for a long time was the bar for general intelligence. Locomotion does not necessarily require general intelligence.</p>
]]></description><pubDate>Fri, 11 Sep 2026 12:29:22 +0000</pubDate><link>https://news.ycombinator.com/item?id=49657297</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=49657297</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49657297</guid></item><item><title><![CDATA[New comment by penteract in "Learn Programming with OCaml"]]></title><description><![CDATA[
<p>> I believe that an ML should be the First Language for Computer Scientists.<p>I'm not sure how much influence a First Language has - the biggest impact might be whether someone decides to continue learning to program. I'd also worry that we might lose something if all computer scientists are too similar. There are lisp believers, and there are those who swear by C; and I think the field of CS would be less rich if either were missing. Given that, it's a good thing that there are a variety of languages taught as first languages, and I'd like to see the variety widen (I don't know of any CS degree which begins by teaching Forth).</p>
]]></description><pubDate>Sun, 06 Sep 2026 15:04:16 +0000</pubDate><link>https://news.ycombinator.com/item?id=49587169</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=49587169</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49587169</guid></item><item><title><![CDATA[New comment by penteract in "How an MIT research project became the Julia programming language"]]></title><description><![CDATA[
<p>> Some languages are less permissive, and have a culture of searching harder for corner cases and dealing with them than others, that is true. I would expect to find less cases like this in Rust, but more cases like this in Python.<p>My expectation is that when I think I've found a bug in the programming language implementation I'm using, it's actually me that's mistaken (or at least that language lawyers consider me to be mistaken). Hearing about someone who has encountered multiple bugs (in regular use, rather than running a fuzzer or being directly involved in implementing the language) makes me very wary.</p>
]]></description><pubDate>Fri, 04 Sep 2026 14:51:12 +0000</pubDate><link>https://news.ycombinator.com/item?id=49565522</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=49565522</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49565522</guid></item><item><title><![CDATA[New comment by penteract in "Judge rules Trump administration’s blacklisting of Anthropic was illegal"]]></title><description><![CDATA[
<p>There has been an instance of a Governor General dismissing a Prime minister.<p><a href="https://en.wikipedia.org/wiki/1975_Australian_constitutional_crisis" rel="nofollow">https://en.wikipedia.org/wiki/1975_Australian_constitutional...</a></p>
]]></description><pubDate>Sat, 29 Aug 2026 00:52:18 +0000</pubDate><link>https://news.ycombinator.com/item?id=49485883</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=49485883</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49485883</guid></item><item><title><![CDATA[New comment by penteract in "A joke domain purchase turned in geopolitical warfare"]]></title><description><![CDATA[
<p>> like they found for Russia tracking launch sites in Ukraine<p>My understanding of that section was that Ukraine were using it to find launch sites in occupied parts of Ukraine - they go on to describe how they helped someone who had been doing the tracking:<p>[From article]<p>> We emailed back and forth and provided documentation on how to run the predictor locally.<p>Edit: my recollection of which parts of Ukraine are occcupied was wrong, leaving me rather confused about who they thought they were helping.</p>
]]></description><pubDate>Wed, 19 Aug 2026 23:14:52 +0000</pubDate><link>https://news.ycombinator.com/item?id=49368405</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=49368405</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49368405</guid></item><item><title><![CDATA[New comment by penteract in "Incident with Github.com [resolved]"]]></title><description><![CDATA[
<p>Please could you link to the study if you can find it. The definition of "better" seems quite critical here, as well as whether it's specific to code hosting websites. A messaging platform is pretty useless if I'm the only user, but Github would still be useful to me without anyone else having an account.</p>
]]></description><pubDate>Tue, 18 Aug 2026 00:55:56 +0000</pubDate><link>https://news.ycombinator.com/item?id=49339793</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=49339793</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49339793</guid></item><item><title><![CDATA[New comment by penteract in "Rust SIMD on the GPU"]]></title><description><![CDATA[
<p>>> GPUs aren't really SIMD, they're SIMT (single instruction multiple thread)<p>> False. If they were threads they'd have their own PC. They do not - only the warp has a PC.<p>They are using the term SIMT as it is normally used[1]. The "single instruction" part means that there is only one PC shared across multiple 'threads'.<p>[1] <a href="https://en.wikipedia.org/wiki/Single_instruction,_multiple_threads" rel="nofollow">https://en.wikipedia.org/wiki/Single_instruction,_multiple_t...</a></p>
]]></description><pubDate>Tue, 11 Aug 2026 09:39:52 +0000</pubDate><link>https://news.ycombinator.com/item?id=49255493</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=49255493</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49255493</guid></item><item><title><![CDATA[New comment by penteract in "So you want to use plants to reduce CO₂"]]></title><description><![CDATA[
<p>Did you consider the alternative calculation of how many plants you need to grow to feed yourself? A few thousand potatoes growing simultaneously might do it.<p>That would overestimate the number you need to remove excess exhaled CO2, since you could throw out the parts you can't eat rather than letting them decay and release CO2 indoors.</p>
]]></description><pubDate>Fri, 31 Jul 2026 01:20:28 +0000</pubDate><link>https://news.ycombinator.com/item?id=49117984</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=49117984</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49117984</guid></item><item><title><![CDATA[New comment by penteract in "We have proof automation now"]]></title><description><![CDATA[
<p>> dependent types and total functions do not scale.<p>I'm not convinced that this is much more true than the claim "correct code doesn't scale". If you add to your code in a way depends on a new property for correctness, and the code was not previously written with awareness that the new property was necessary, then you need to check through the rest of your code and make sure that the property is maintained. Formally verifying things is painful because it actually makes you check this.<p>Instead, we live in a world where we use software that is not completely correct. Browsers have remote code execution vulnerabilities because people who make browsers decided it's more important that javascript can run quickly, and that new standards get implemented, than that we avoid such vulnerabilities at all costs.</p>
]]></description><pubDate>Mon, 27 Jul 2026 15:59:34 +0000</pubDate><link>https://news.ycombinator.com/item?id=49071476</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=49071476</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49071476</guid></item><item><title><![CDATA[New comment by penteract in "Mythologizing AI makes it more likely that we’ll fail to operate it well (2023)"]]></title><description><![CDATA[
<p>If you had access to a bunch identical copies of me that couldn't communicate with each other, you'd be able to find many questions I would give stupid answers to. I suspect I'd come out of it looking worse than an LLM.</p>
]]></description><pubDate>Mon, 20 Jul 2026 22:04:05 +0000</pubDate><link>https://news.ycombinator.com/item?id=48985451</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=48985451</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48985451</guid></item><item><title><![CDATA[New comment by penteract in "Why do AI company logos look like buttholes? (2025)"]]></title><description><![CDATA[
<p>This brought to my attention the following claim by OpenAI, regarding a logo which does not have any right angles:<p>> right angles introduce the precision and structure that technology demands<p><a href="https://openai.com/brand/#:~:text=right%20angles" rel="nofollow">https://openai.com/brand/#:~:text=right%20angles</a></p>
]]></description><pubDate>Sat, 18 Jul 2026 12:02:13 +0000</pubDate><link>https://news.ycombinator.com/item?id=48957288</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=48957288</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48957288</guid></item><item><title><![CDATA[New comment by penteract in "Australian energy retailers must provide three hours of free daytime electricity"]]></title><description><![CDATA[
<p>To check I understand you: the smaller tank with heatpump would consume less energy outside the time window in which energy is free than the large tank with resistive heating, but has a higher capital cost which would outweigh the amount saved on energy?<p>If that's right, it's not obvious to me that building a suitably sized solar panel is environmentally worse than building a heat pump.</p>
]]></description><pubDate>Tue, 14 Jul 2026 11:40:04 +0000</pubDate><link>https://news.ycombinator.com/item?id=48905181</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=48905181</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48905181</guid></item><item><title><![CDATA[New comment by penteract in "A graph that should be front-page news"]]></title><description><![CDATA[
<p>Based on <a href="https://climatereanalyzer.org/clim/sst_daily/?dm_id=nino3.4" rel="nofollow">https://climatereanalyzer.org/clim/sst_daily/?dm_id=nino3.4</a>, 1988 is the year from the dataset with the lowest temperature throughout June and July.</p>
]]></description><pubDate>Mon, 13 Jul 2026 12:33:01 +0000</pubDate><link>https://news.ycombinator.com/item?id=48891738</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=48891738</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48891738</guid></item><item><title><![CDATA[New comment by penteract in "Pre-Modern Armies for Worldbuilders, Part III: Paying for It"]]></title><description><![CDATA[
<p>There are those who make strong arguments for the opposite.<p>Once you have paid him the Danegeld, you never get rid of the Dane.</p>
]]></description><pubDate>Sat, 27 Jun 2026 00:21:52 +0000</pubDate><link>https://news.ycombinator.com/item?id=48693748</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=48693748</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48693748</guid></item><item><title><![CDATA[New comment by penteract in "Trains halted across Germany because of communication system problem"]]></title><description><![CDATA[
<p>The number €115 is in the second chart as the per capita German expenditure on rail infrastructure in 2023. I don't see €477, but it's pretty close to the €480 figure for Switzerland in 2024. My guess is they saw an old version of the page when the first chart had numbers for 2023 and have kept using it without noticing the update.</p>
]]></description><pubDate>Wed, 24 Jun 2026 00:15:44 +0000</pubDate><link>https://news.ycombinator.com/item?id=48653481</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=48653481</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48653481</guid></item><item><title><![CDATA[New comment by penteract in "Fossil Fuels Are 40% of Freight Shipping Tonnage, but Half Its Fuel Use"]]></title><description><![CDATA[
<p>It's saying that 40% of the tons of cargo loaded onto ships is fossil fuels, but this makes up about 50% of ton-miles, because fossil fuels travel further on average than other cargo. Not the easiest headline to correctly parse.</p>
]]></description><pubDate>Sun, 21 Jun 2026 15:45:28 +0000</pubDate><link>https://news.ycombinator.com/item?id=48619897</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=48619897</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48619897</guid></item><item><title><![CDATA[New comment by penteract in "Alice is impatient"]]></title><description><![CDATA[
<p>This is the same calculation behind the observation "you spend much longer in front of red traffic lights than green ones".<p>It's an interesting observation, but it's playing games with the meaning of "mean latency" and I'm not sure this is a very helpful way to look at requests to a web service - slightly slowing the fastest responses to requests would improve your time-weighted mean latency.<p>It's a better metric for looking at outages - instantaneous outages don't affect anyone, and time-weighting correctly discards them. On the other hand, average outage length is a very suspect and gameable metric unless accompanied by uptime %.</p>
]]></description><pubDate>Sun, 21 Jun 2026 10:42:51 +0000</pubDate><link>https://news.ycombinator.com/item?id=48617611</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=48617611</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48617611</guid></item><item><title><![CDATA[New comment by penteract in "What every coder should know about gamma (2016)"]]></title><description><![CDATA[
<p>> What you want is 40% black onto white to have a similar difference in intensity as 40% white onto black, otherwise your darkmode font will look significantly different at the same intensity as your lightmode font. This is why it doesn't make sense to do it in a linear colourspace<p>Thanks for putting this clearly. I had not given this argument enough thought and respect previously. Would you agree if I said this is about maximizing the amount of useful information given to the reader (even if it deviates from approximating a printed page) and a perceptual colour space is the way to measure that information?<p>I should mention that I can find plenty of resources that suggest you should use a different font for dark-on-light vs light-on-dark (although I'm aware I'm not a good judge of the quality of said resources). This is not necessarily opposed to your point, since your reasoning can be extended to conclude that identically shaped printed text subject to blurring in linear colour space would be perceived differently depending on whether it's light-on-dark or dark-on-light (including when it's naturally blurred due to imperfect eyesight).<p>> Note that the Wikipedia article is wrong, given that photoshop uses a nontrivial gamma exponent<p>If we set text rendering aside, and consider something like games which prioritize photorealism rather than legibility, would you agree that linear colour space is the sensible one to do antialiasing in? This is for essentially the same reason you should do image resizing in linear color space, for which Wikipedia's citation [6] provides a convincing demonstration.<p>[6] <a href="https://www.ericbrasseur.org/gamma.html?i=1" rel="nofollow">https://www.ericbrasseur.org/gamma.html?i=1</a></p>
]]></description><pubDate>Wed, 17 Jun 2026 00:26:50 +0000</pubDate><link>https://news.ycombinator.com/item?id=48564214</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=48564214</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48564214</guid></item><item><title><![CDATA[New comment by penteract in "What every coder should know about gamma (2016)"]]></title><description><![CDATA[
<p>> There's no physical underlying lighting process, so it doesn't make sense to use physical light units.<p>I disagree with you here. Text rendering specifically is incredibly complicated, but for antialiasing in other contexts, the problem can be seen as trying to approximate what would be seen if the display had higher resolution and the viewer has blurry eyesight. In this model, a linear color space makes sense - if 60% of the pixels within a region on a higher dpi display would be lit, then that is best approximated* by a single pixel emitting the same number of photons as those pixels would (which is 60% as many photons as there should be in the situation where all pixels on the higher dpi display would be lit).<p>See <a href="https://en.wikipedia.org/wiki/Spatial_anti-aliasing#Anti-aliasing_and_gamma_compression" rel="nofollow">https://en.wikipedia.org/wiki/Spatial_anti-aliasing#Anti-ali...</a> .<p>*there are better filters if you're looking at more than one pixel at once<p>> Using perceptual blending, the antialiasing will be exactly the same efficacy in both cases. Using blending in linear space, these two test cases will look very different and render incorrectly!<p>Whatever color space you do your blending in, 40% black onto white should look the same as 60% white onto black.</p>
]]></description><pubDate>Tue, 16 Jun 2026 14:27:46 +0000</pubDate><link>https://news.ycombinator.com/item?id=48555860</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=48555860</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48555860</guid></item><item><title><![CDATA[New comment by penteract in "An O(x)Caml book that runs"]]></title><description><![CDATA[
<p>Yes for me (although difficulty varies depending on what you're trying to install). I would have started programming 2 years earlier than I actually did if my first attempt to install tools to run a programming language had worked.<p>You have to precisely follow a sequence of instructions without the experience to understand their purpose, or any idea of how to fix things if you make a mistake.<p>Web technology is an exception to this. People already have a web browser, and ignoring mobile devices, browsers come with a js REPL.</p>
]]></description><pubDate>Tue, 16 Jun 2026 00:01:23 +0000</pubDate><link>https://news.ycombinator.com/item?id=48548803</link><dc:creator>penteract</dc:creator><comments>https://news.ycombinator.com/item?id=48548803</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48548803</guid></item></channel></rss>