<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: chrisfosterelli</title><link>https://news.ycombinator.com/user?id=chrisfosterelli</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Fri, 19 Jun 2026 17:31:17 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=chrisfosterelli" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by chrisfosterelli in "Ultraviolet corona discharges on treetops during storms"]]></title><description><![CDATA[
<p>I don't really blame the researchers here but this is yet another article that is happy to have a clickbait headline which any reasonable reader is going to assume will include a picture of "treetops glowing".<p>At least personally I scanned the article for it and only found the picture at the top, which I was then frustrated to learn that's just a lab photo, and I came here  wondering where the actual image is of it in the field so I found OPs comment helpful to indicate that the suggestion there would be a beautiful picture of glowing canopy somewhere is basically a result of editorializing.</p>
]]></description><pubDate>Wed, 22 Apr 2026 16:00:09 +0000</pubDate><link>https://news.ycombinator.com/item?id=47865526</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=47865526</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47865526</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "Sam Altman's response to Molotov cocktail incident"]]></title><description><![CDATA[
<p>I have to believe that what we're seeing is a minority opinion that feels like their uniquely backwards logic justifying this is somehow worth sharing as if its new and insightful, while the vast majority of us think "holy crap, that's horrible" but aren't adding it because of course that's already been said and there just isn't any more nuance needed.</p>
]]></description><pubDate>Sat, 11 Apr 2026 17:55:10 +0000</pubDate><link>https://news.ycombinator.com/item?id=47732594</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=47732594</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47732594</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "Show HN: Signet – Autonomous wildfire tracking from satellite and weather data"]]></title><description><![CDATA[
<p>Happy to help. This is the official methods description for the Canadian gov's FM3 data, it's probably the best place to start although the details are mostly covered in much longer publications that require some digging: <a href="https://cwfis.cfs.nrcan.gc.ca/background/dsm/fm3" rel="nofollow">https://cwfis.cfs.nrcan.gc.ca/background/dsm/fm3</a></p>
]]></description><pubDate>Sun, 15 Mar 2026 18:36:47 +0000</pubDate><link>https://news.ycombinator.com/item?id=47390394</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=47390394</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47390394</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "Show HN: Signet – Autonomous wildfire tracking from satellite and weather data"]]></title><description><![CDATA[
<p>We do some similar work with hotspot analysis but (as a Canadian company) are more focused on Canadian data where the government already does a fair bit of false positive detection and filtering. It generally gives pretty clean data and we can scrub historical data over time like this: <a href="https://imgur.com/a/gCJGzqd" rel="nofollow">https://imgur.com/a/gCJGzqd</a><p>The dataset includes US coverage but it's not filtered the same way and FAR more noisy, so I appreciate efforts like this. We haven't got there yet but if you were looking for something deterministic and automatable the Canadian gov's process is potentially worth learning about.<p>They also produce perimeter estimates based on the hotspots which we can extract and put into a physics-based fire growth model like Prometheus or FARSITE to estimate future fire behaviour based on forecasted weather. This gives very actionable and deterministic estimates of future fire behaviour. We also have worked on a risk model that determines the likelihood of that future fire growth interacting with various assets on the landscape (urban interface areas, power lines, fuel pipelines, forest inventory, etc) and calls out high risk areas. One thing we've been wondering if where LLMs fit into any of this (if at all) so appreciate seeing what others are doing.</p>
]]></description><pubDate>Sun, 15 Mar 2026 17:57:13 +0000</pubDate><link>https://news.ycombinator.com/item?id=47389937</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=47389937</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47389937</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "How Kernel Anti-Cheats Work"]]></title><description><![CDATA[
<p>That's a good point.</p>
]]></description><pubDate>Sun, 15 Mar 2026 05:01:50 +0000</pubDate><link>https://news.ycombinator.com/item?id=47384516</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=47384516</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47384516</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "How kernel anti-cheats work"]]></title><description><![CDATA[
<p>Well it is a professional sport -- there's tournaments worth tens of millions of dollars. But honestly it is probably easier to catch cheaters in that environment. The real issue is that cheaters suck the fun out of the game, and matchmaking doesn't fix this because cheaters just cheat the matchmaking (smurf accounts, etc) until they're stomping regular players again. I don't think throwing our hands up and letting the cheaters go on is a real solution.</p>
]]></description><pubDate>Sun, 15 Mar 2026 04:05:25 +0000</pubDate><link>https://news.ycombinator.com/item?id=47384247</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=47384247</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47384247</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "OpenAI agrees with Dept. of War to deploy models in their classified network"]]></title><description><![CDATA[
<p>I agree with what you're saying, but given the egos involved in the current admin there's a practical interpretation:<p>1. Department of War broadly uses Anthropic for general purposes<p>2. Minority interests in the Department of War would like to apply it to mass surveillance and/or autonomous weapons<p>3. Anthropic disagrees and it escalates<p>4. Anthropic goes public criticizing the whole Department of War<p>5. Trump sees a political reason to make an example of Anthropic and bans them<p>6. The entirety of the Department of War now has no AI for anything<p>7. Department of War makes agreement with another organization<p>If there was only a minority interest at the department of war to develop mass surveillance / autonomous weapons or it was seen as an unproven use case / unknown value compared to the more proven value from the rest of their organizational use of it, it would make sense that they'd be 1) in practice willing to agree to compromise on this, 2) now unable to do so with Anthropic in specific because of the political kerfuffle.<p>I imagine they'd rather not compromise, but if none of the AI companies are going to offer them it then there's only so much you can do as a short term strategy.</p>
]]></description><pubDate>Sat, 28 Feb 2026 07:34:49 +0000</pubDate><link>https://news.ycombinator.com/item?id=47191735</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=47191735</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47191735</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "Hackers (1995) Animated Experience"]]></title><description><![CDATA[
<p>Good point. By 'technical garbage' I largely meant the dated visualizations it associated with all the hacking scenes (the rapid hacking speed I can forgive for the sake of story) but TBH I never fully made the connection between 'the gibson' and william gibson -- I kind of like the idea of the hacking scenes as an exploration to gibson's ideas around cyberspace.</p>
]]></description><pubDate>Sat, 07 Feb 2026 21:23:01 +0000</pubDate><link>https://news.ycombinator.com/item?id=46928212</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=46928212</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46928212</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "Hackers (1995) Animated Experience"]]></title><description><![CDATA[
<p>The movie is obviously technical garbage but one thing it did well was capture that early hacker counterculture spirit. I think a lot of us can appreciate that for the warm blanket it is and forgive its technical accuracy and story flaws.</p>
]]></description><pubDate>Fri, 06 Feb 2026 16:28:34 +0000</pubDate><link>https://news.ycombinator.com/item?id=46914896</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=46914896</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46914896</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "Heathrow scraps liquid container limit"]]></title><description><![CDATA[
<p>I noticed my eyes started automatically skimming right after that paragraph. It's funny my brain has learned to calibrate its reading effort in response to how much perceived effort went into writing it.</p>
]]></description><pubDate>Tue, 27 Jan 2026 05:33:44 +0000</pubDate><link>https://news.ycombinator.com/item?id=46775903</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=46775903</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46775903</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "I let ChatGPT analyze a decade of my Apple Watch data, then I called my doctor"]]></title><description><![CDATA[
<p>Health metrics are absolutely tarnished by a lack of proper context. Unsurprisingly, it turns out that you can't reliably take a concept as broad as health and reduce it to a number. We see the same arguments over and over with body fat percentages, vo2 max estimates, BMI, lactate thresholds, resting heart rate, HRV, and more. These are all useful metrics, but it's important to consider them in the proper context that each of them deserve.<p>This article gave an LLM a bunch of health metrics and then asked it to reduce it to a single score, didn't tell us any of the actual metric values, and then compared that to a doctor's opinion. Why anyone would expect these to align is beyond my understanding.<p>The most obvious thing that jumps out to me is that I've noticed doctors generally, for better or worse, consider "health" much differently than the fitness community does. It's different toolsets and different goals. If this person's VO2 max estimate was under 30, that's objectively a poor VO2 max by most standards, and an LLM trained on the internet's entire repository of fitness discussion is likely going to give this person a bad score in terms of cardio fitness. But a doctor who sees a person come in who isn't complaining about anything in particular, moves around fine, doesn't have risk factors like age or family history, and has good metrics on a blood test is probably going to say they're in fine cardio health regardless of what their wearable says.<p>I'd go so far to say this is probably the case for most people. Your average person is in really poor fitness-shape but just fine health-shape.</p>
]]></description><pubDate>Tue, 27 Jan 2026 00:45:22 +0000</pubDate><link>https://news.ycombinator.com/item?id=46773944</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=46773944</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46773944</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "How I estimate work"]]></title><description><![CDATA[
<p>Software engineering isn't some magical, special branch of engineering in which no one piece of software resembles another, no well-studied steps can be replicated, and the design of which is equivalent to rocket science.<p>If you're truly creating such unique and valuable software that it is to be compared to the world's engineering megaprojects in its challenge then perhaps it is beyond being beholden to a budget. Who am I to say?<p>But 99.9% of this industry isn't doing that and should probably be able to estimate their work.</p>
]]></description><pubDate>Sat, 24 Jan 2026 22:38:21 +0000</pubDate><link>https://news.ycombinator.com/item?id=46748450</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=46748450</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46748450</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "How I estimate work"]]></title><description><![CDATA[
<p>Yes, my claim is absolutely not that they're good at it haha.<p>Estimation is a real problem in a lot of industries, including ours, and I think that's probably common ground here -- I suppose my differing position is that I think the solution is to get better at it, not to refuse to do it.<p>I've been on projects where I've seen the budget explode and projects where I've seen the budget kept tight and on track. The latter is very hard and requires effort from ALL sides to work, but it's almost always achievable.<p>I actually empathize a little bit more with megaprojects because generally the larger the budget the harder it will be to keep on track in my experience. Most estimates we're asked to give in our day jobs are not even multi-million dollar estimates.<p>Also I'm using budget and estimate interchangeably but these are of course different things -- that's one of my nitpicks is that we often treat these as the same thing when we talk about estimating being hard. A lot of individual estimates can be very wrong without affecting the ultimate budget.</p>
]]></description><pubDate>Sat, 24 Jan 2026 16:53:16 +0000</pubDate><link>https://news.ycombinator.com/item?id=46745146</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=46745146</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46745146</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "How I estimate work"]]></title><description><![CDATA[
<p>> Contractor estimates are just as prone to schedule slippage and cost overruns as anything estimated by software engineers<p>I completely agree. That's why I chose that example: They're also awful at it, especially these days in North America in particular. But any contractor that tried to put in a bid claiming "it'll be done when it's done and cost what it costs" would not be considered professionally competent enough to award a multi-million dollar budget.</p>
]]></description><pubDate>Sat, 24 Jan 2026 16:34:52 +0000</pubDate><link>https://news.ycombinator.com/item?id=46744974</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=46744974</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46744974</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "How I estimate work"]]></title><description><![CDATA[
<p>When customers ask when feature X will be ready, they sure have an idea of done in their mind.</p>
]]></description><pubDate>Sat, 24 Jan 2026 16:31:03 +0000</pubDate><link>https://news.ycombinator.com/item?id=46744937</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=46744937</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46744937</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "How I estimate work"]]></title><description><![CDATA[
<p>I agree. Software engineering is basically the only industry that pretends this is professionally acceptable. Imagine if government staff asked when a bridge would be done or how much it would cost and the lead engineer just said "it's impossible to estimate accurately, so we wont. It's a big project tho".<p>Estimating in software is very hard, but that's not a good reason to give up on getting better at it</p>
]]></description><pubDate>Sat, 24 Jan 2026 16:03:50 +0000</pubDate><link>https://news.ycombinator.com/item?id=46744703</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=46744703</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46744703</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "The chess bot on Delta Air Lines will destroy you (2024) [video]"]]></title><description><![CDATA[
<p>Yes, as someone who is usually flying with my GF, I love this feature! Unfortunately air canada's implementation is abysmal and anytime there is a pilot announcement it interrupts the game long enough to break the network connection and cause it to end the game.</p>
]]></description><pubDate>Mon, 12 Jan 2026 23:10:42 +0000</pubDate><link>https://news.ycombinator.com/item?id=46595462</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=46595462</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46595462</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "Anti-aging injection regrows knee cartilage and prevents arthritis"]]></title><description><![CDATA[
<p>Yes, that seems to sort of be the criticism and mixed results. Although not everyone has a complete protein diet so theoretically although it breaks down the idea is you then have all the things you need, should your body choose to use it to build collagen.<p>But I agree, I'd rather start solving deficiencies at the diet level than the supplement level and haven't integrated collagen personally so far.<p>TBH I suspect marketing plays a big role. "Collagen = good, therefore just buy it and eat it" makes logical sense if you don't actually do any research first.</p>
]]></description><pubDate>Mon, 05 Jan 2026 05:16:52 +0000</pubDate><link>https://news.ycombinator.com/item?id=46495562</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=46495562</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46495562</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "Anti-aging injection regrows knee cartilage and prevents arthritis"]]></title><description><![CDATA[
<p>Among endurance athletes collagen supplements have become increasingly popular the past couple years -- from what I understand the evidence is kind of mixed though<p>e.g. <a href="https://thefeed.com/products/pillar-performance-collagen-1?variant=41261266599999&queryID=052b75811fded336f2838a757ad287ad" rel="nofollow">https://thefeed.com/products/pillar-performance-collagen-1?v...</a></p>
]]></description><pubDate>Sun, 04 Jan 2026 18:38:04 +0000</pubDate><link>https://news.ycombinator.com/item?id=46490827</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=46490827</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46490827</guid></item><item><title><![CDATA[New comment by chrisfosterelli in "I'm a developer for a major food delivery app"]]></title><description><![CDATA[
<p>> 3. With all the modern corporate doublespeak trainings, there is 0 chance that something would be called “desperation score” in us business.<p>This is a good point. It'd almost certainly be called something like 'payrate sensitivity factor'</p>
]]></description><pubDate>Fri, 02 Jan 2026 06:54:29 +0000</pubDate><link>https://news.ycombinator.com/item?id=46462131</link><dc:creator>chrisfosterelli</dc:creator><comments>https://news.ycombinator.com/item?id=46462131</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46462131</guid></item></channel></rss>