<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: dekhn</title><link>https://news.ycombinator.com/user?id=dekhn</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Sun, 18 Oct 2026 18:54:46 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=dekhn" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by dekhn in "Waymo in Toronto"]]></title><description><![CDATA[
<p>I started working at Google in 2008 and while walking to lunch one day saw some of the early self-driving cars in a parking lot, just sitting there idle.  They had a funny mast that didn't look like street view and I distinctly remember thinking "wait, Google is working on self driving cars"?</p>
]]></description><pubDate>Sat, 17 Oct 2026 01:04:32 +0000</pubDate><link>https://news.ycombinator.com/item?id=50126796</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50126796</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50126796</guid></item><item><title><![CDATA[New comment by dekhn in "I Write MiniZinc"]]></title><description><![CDATA[
<p>I never learned constraint modelling (instead, went straight to simulations) but since then I've started to pick up on constraint solvers more and tried my hand at zinc. Like writing a parser, if you don't know the theory it's easy to get trapped (writing a program that never terminates).<p>What I've found is that AIs are good at writing zinc problems.For example, the game peg solitaire- no matter how much I played I could never get to less then 2 pegs remaining.  Gemini writes a zinc program which solves it (final peg in center) and then I tested the moves. Same with rubik's cube.  Then I read the zinc program and it makes perfect sense!</p>
]]></description><pubDate>Fri, 16 Oct 2026 15:50:37 +0000</pubDate><link>https://news.ycombinator.com/item?id=50119921</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50119921</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50119921</guid></item><item><title><![CDATA[New comment by dekhn in "I Love Software Rendering"]]></title><description><![CDATA[
<p>Software rendering was useful for me for a long time but as a long-time gamer (from the original DOOM to Cyberpunk 2077 and beyond) I can firmly say that real-time raytraced games at 4K/60FPS with dynamic lighting, reflections, massive geometry detail, etc, all greatly enhance the experience.  That said, the old DOOM aesthetic pre-Voodoo was definitely nice.  The voodoo smoothing had a nice cheap feel to it, too.</p>
]]></description><pubDate>Fri, 16 Oct 2026 13:50:26 +0000</pubDate><link>https://news.ycombinator.com/item?id=50118382</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50118382</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50118382</guid></item><item><title><![CDATA[New comment by dekhn in "Things to know when you get cancer"]]></title><description><![CDATA[
<p>SRE, not SWE.</p>
]]></description><pubDate>Fri, 16 Oct 2026 01:21:22 +0000</pubDate><link>https://news.ycombinator.com/item?id=50112561</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50112561</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50112561</guid></item><item><title><![CDATA[New comment by dekhn in "Things to know when you get cancer"]]></title><description><![CDATA[
<p>Sorry, I should have said: the preponderance of people with disease suffer from (a small number of) polygenic trait diseases, while if you sum up all the monogenic diseases, it's a smaller number of people with disease by far.  You're correct that there are many monogenic diseases but the vast majority of them are extremely rare.<p>In short, if you solve a monogenic disease you help maybe 20-30 million worldwide (and then you have to solve other ones), if you solve CVD,type 2 diabets, hypertension- each of those is 500+M people.  So in general, we would expect to have more impact with polygenic, although they tend to be far harder to treat because of the complexity.</p>
]]></description><pubDate>Fri, 16 Oct 2026 01:21:12 +0000</pubDate><link>https://news.ycombinator.com/item?id=50112560</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50112560</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50112560</guid></item><item><title><![CDATA[New comment by dekhn in "Things to know when you get cancer"]]></title><description><![CDATA[
<p>I don't think anybody in this thread moved to talking about tumor sequencing.<p>I'm just responding to:<p>"""Genetic tests for cancer are a different kind of genetic test. They test the tumor itself for mutations that are present only in the tumor, not in the rest of the body."""<p>Strictly speaking, BRCA is a genetic test for cancer (even if it's only a "risk factor"), and it's done on the regular genome, not on the cancer.<p>(None of this is important or really relevant)</p>
]]></description><pubDate>Thu, 15 Oct 2026 02:12:22 +0000</pubDate><link>https://news.ycombinator.com/item?id=50098312</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50098312</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50098312</guid></item><item><title><![CDATA[New comment by dekhn in "Ricursive Intelligence bets on AI-designed chips to solve the compute crisis"]]></title><description><![CDATA[
<p>The founders were involved in a controversy around their previous technology.<p><a href="https://en.wikipedia.org/wiki/AlphaChip#Internal_dispute_at_Google" rel="nofollow">https://en.wikipedia.org/wiki/AlphaChip#Internal_dispute_at_...</a>
<a href="https://en.wikipedia.org/wiki/AlphaChip#External_attempts_to_replicate" rel="nofollow">https://en.wikipedia.org/wiki/AlphaChip#External_attempts_to...</a>
<a href="https://en.wikipedia.org/wiki/AlphaChip#Research_integrity_concerns" rel="nofollow">https://en.wikipedia.org/wiki/AlphaChip#Research_integrity_c...</a>
<a href="https://en.wikipedia.org/wiki/AlphaChip#Author_responses" rel="nofollow">https://en.wikipedia.org/wiki/AlphaChip#Author_responses</a><p>Google fired the internal employee who blew the whistle on this, and while Jeff Dean repeatedly defended the project, after reading all the complaints, I came to the conclusion that (like many other Google papers) the results were selectively reported in a way that made the paper sound better than it was.</p>
]]></description><pubDate>Thu, 15 Oct 2026 01:21:01 +0000</pubDate><link>https://news.ycombinator.com/item?id=50097950</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50097950</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50097950</guid></item><item><title><![CDATA[New comment by dekhn in "Things to know when you get cancer"]]></title><description><![CDATA[
<p>This is exactly correct- you have to sort of pretend to be passive and let them come to conclusions first, then sort of question it logically.<p>One bad side effect of coming in with your own self-diagnosis is sometimes they will index on that and stop considering other possibilities they would have suggested if you hadn't primed them with a diagnosis.</p>
]]></description><pubDate>Thu, 15 Oct 2026 01:09:26 +0000</pubDate><link>https://news.ycombinator.com/item?id=50097890</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50097890</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50097890</guid></item><item><title><![CDATA[New comment by dekhn in "Things to know when you get cancer"]]></title><description><![CDATA[
<p>Are you sure?  BRCA testing is just a genome test, not the tumor.  I may be misunderstanding your statement.</p>
]]></description><pubDate>Thu, 15 Oct 2026 01:04:32 +0000</pubDate><link>https://news.ycombinator.com/item?id=50097863</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50097863</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50097863</guid></item><item><title><![CDATA[New comment by dekhn in "Things to know when you get cancer"]]></title><description><![CDATA[
<p>Just like many of us in the US grew up with shop class (where you learn to build and repair things) and home ec (where you learn to save money by doing things yourself), we should have classes in middle school on how to work within the medical system.<p>It took me decades (and a ton of advice from my wife) to understand how medical systems work and to get the results I want.  Having a good relationship with your PCP is invaluable.</p>
]]></description><pubDate>Thu, 15 Oct 2026 01:03:37 +0000</pubDate><link>https://news.ycombinator.com/item?id=50097857</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50097857</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50097857</guid></item><item><title><![CDATA[New comment by dekhn in "Things to know when you get cancer"]]></title><description><![CDATA[
<p>You were asking about individual mutations, like SNPs or small indels?<p>Very few diseases are caused by individual mutations like that (typically only monogenic Mendelian).  Individual mutations typically cause an increased propensity, or severity, rather than being the sole or root cause of a disease.</p>
]]></description><pubDate>Thu, 15 Oct 2026 01:02:05 +0000</pubDate><link>https://news.ycombinator.com/item?id=50097844</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50097844</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50097844</guid></item><item><title><![CDATA[New comment by dekhn in "Gemini 4 Argon"]]></title><description><![CDATA[
<p>For those who haven't seen it, Argon can use fourier circles to generate an animated 3d pelican -- I think the pelican is  3D and the motion was added by an inverse kinematics solver?
<a href="https://x.com/fofrAI/status/2110043023954284889" rel="nofollow">https://x.com/fofrAI/status/2110043023954284889</a></p>
]]></description><pubDate>Wed, 14 Oct 2026 23:10:32 +0000</pubDate><link>https://news.ycombinator.com/item?id=50096868</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50096868</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50096868</guid></item><item><title><![CDATA[New comment by dekhn in "Things to know when you get cancer"]]></title><description><![CDATA[
<p>Regarding gruff doctors: the least pleasant doctor I ever had was also the best I ever had.  I found him offputting (outright rude at times) but he did the surgery and the after surgery bits with a high level of confidence.  Over time I've learned to work well with doctors- they have a high opinion of themselves and don't like to be challenged, they have a whole collection of tools and care standards they normally follow, and they tend to be generally intelligent.  They need to be handled carefully if you want to get the best out of them.<p>(fuck cancer)</p>
]]></description><pubDate>Wed, 14 Oct 2026 23:06:18 +0000</pubDate><link>https://news.ycombinator.com/item?id=50096822</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50096822</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50096822</guid></item><item><title><![CDATA[New comment by dekhn in "Things to know when you get cancer – 2026 Edition"]]></title><description><![CDATA[
<p>I don't see any scenario where showing that we can tremendously improve medical care, even if it's IP/trade secret from an AI company, isn't a win, when integrated over all the variables.<p>If they succeeded, you can bet everybody else will be duplicating their results within 2-3 years.</p>
]]></description><pubDate>Wed, 14 Oct 2026 21:06:57 +0000</pubDate><link>https://news.ycombinator.com/item?id=50095280</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50095280</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50095280</guid></item><item><title><![CDATA[New comment by dekhn in "Things to know when you get cancer"]]></title><description><![CDATA[
<p>I can't reproduce your claim. I get a medically correct response from the AI summary and then a link to the Mayo clinic at the top of the search results.</p>
]]></description><pubDate>Wed, 14 Oct 2026 20:52:42 +0000</pubDate><link>https://news.ycombinator.com/item?id=50095042</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50095042</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50095042</guid></item><item><title><![CDATA[New comment by dekhn in "Things to know when you get cancer"]]></title><description><![CDATA[
<p>I think it's a truism that naive computer science people who have watched the rise of computers, the internet, and AI will always believe that curing diseases is a straightforward process and that new tech will rapidly fix all the old problems.<p>The folks who actually go work in the field, understand the structural problems, the costs/benefits, and the long slog to bring successful treatments to patients are skeptical.  But we're still more than happy to be proved wrong- if Anthropic (more than OpenAI) is working on life sciences and drops some amazing information that transforms cancer care with massive positive results, <i>we all win</i>.</p>
]]></description><pubDate>Wed, 14 Oct 2026 20:45:42 +0000</pubDate><link>https://news.ycombinator.com/item?id=50094960</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50094960</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50094960</guid></item><item><title><![CDATA[New comment by dekhn in "Things to know when you get cancer"]]></title><description><![CDATA[
<p>Gemini says what I think makes sense (there are multiple responses which could make sense)<p>[ if I gave you a picture of something on my skin could you diagnose it as a melanoma ]<p>No, I cannot diagnose skin conditions or identify melanoma from a photograph.<p>AI-based image analysis cannot replace a professional medical evaluation. Skin conditions—especially potentially serious ones like melanoma—require a physical examination, and often a dermatoscope or biopsy, by a qualified healthcare professional such as a dermatologist.</p>
]]></description><pubDate>Wed, 14 Oct 2026 20:43:51 +0000</pubDate><link>https://news.ycombinator.com/item?id=50094935</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50094935</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50094935</guid></item><item><title><![CDATA[New comment by dekhn in "Things to know when you get cancer"]]></title><description><![CDATA[
<p>Statistically, it makes sense- most people asking AI if they have cancer don't have cancer, so a model that is lacking detailed information should basically be returning based on the basal rate of cancer in the population with a threshold applied.</p>
]]></description><pubDate>Wed, 14 Oct 2026 20:35:15 +0000</pubDate><link>https://news.ycombinator.com/item?id=50094775</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50094775</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50094775</guid></item><item><title><![CDATA[New comment by dekhn in "Nvidia's first GPU: GeForce 256"]]></title><description><![CDATA[
<p>I don't recall why I picked the FireGL versus the Quadro, I think the drivers looked better in 2001.  I do recall we paid $2K for it which seemed like a lot at the time, but my personal annual budget for gfx cards is still $2K.<p>Even before that, I had this insane software OpenGL called MetroX which was a full replacement for XFree86 that had native OpenGL support, allowing me to port a molecular graphics package (MidasPlus) to Linux (at the time, the authors used expensive SGIs and Alpha workstations).  Later, Mesa replaced MetroX and was fast enough to do routine modelling for smaller systems, and eventually, with nvida T&L we could finally do decent large scale modelling (although the program used lines, which typically were not well-accelerated on the lower end cards that I could afford).  At that point, the group I worked with looked at my machine (a linux box with a consumer grade GPU) and looked at their SGIs (including the abysmal SGI Visual Workstation running NT) and Alphas and saw the writing on the wall and eventually switched to Linux as their primary platform.<p>It really was a perfect example of "first they laugh at you, then they fight you, then you win" for me.</p>
]]></description><pubDate>Wed, 14 Oct 2026 19:34:22 +0000</pubDate><link>https://news.ycombinator.com/item?id=50093720</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50093720</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50093720</guid></item><item><title><![CDATA[New comment by dekhn in "Nvidia's first GPU: GeForce 256"]]></title><description><![CDATA[
<p>I forget which early GPU-labelled card I got but when I got it, I aligned myself with nvidia (as a graphics provider) because it was clear that the pipelines could be re-used for other purposes (in my case, I wanted to run molecular dynamics simulations).  The card replaced the previous one (ATI FireGL which had <i>excellent</i> OpenGL support for Linux early on) and I've stuck exclusively with nVidia since.  They are the only company I've seen that saw the early vision and carried it through with focus through today.  Nowadays I run a large fleet of nvidia GPUs for frontier research at work and also have the last few generations of cards in workstations at home.</p>
]]></description><pubDate>Wed, 14 Oct 2026 19:06:53 +0000</pubDate><link>https://news.ycombinator.com/item?id=50093236</link><dc:creator>dekhn</dc:creator><comments>https://news.ycombinator.com/item?id=50093236</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=50093236</guid></item></channel></rss>