<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: jaggederest</title><link>https://news.ycombinator.com/user?id=jaggederest</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Mon, 28 Sep 2026 15:06:43 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=jaggederest" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by jaggederest in "Rails World 2026 Opening Keynote [video]"]]></title><description><![CDATA[
<p>How certain are you about that? <a href="https://guides.rubyonrails.org/v2.3/plugins.html" rel="nofollow">https://guides.rubyonrails.org/v2.3/plugins.html</a><p>Back in the very early days you would have used script/plugin install (svn url)<p>Here's one of my mirror repositories migrated from SVN into git. <a href="https://github.com/jaggederest/acts_as_voteable" rel="nofollow">https://github.com/jaggederest/acts_as_voteable</a></p>
]]></description><pubDate>Fri, 25 Sep 2026 02:47:02 +0000</pubDate><link>https://news.ycombinator.com/item?id=49839650</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49839650</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49839650</guid></item><item><title><![CDATA[New comment by jaggederest in "Why is the liver so weirdly regenerative?"]]></title><description><![CDATA[
<p>Other animals do get heart cancer, which is fascinating. It's still very uncommon compared to other cancers, but not virtually absent as it is in people.</p>
]]></description><pubDate>Thu, 24 Sep 2026 18:40:32 +0000</pubDate><link>https://news.ycombinator.com/item?id=49835048</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49835048</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49835048</guid></item><item><title><![CDATA[New comment by jaggederest in "Rails World 2026 Opening Keynote [video]"]]></title><description><![CDATA[
<p>I think the issue with Rails, as a long time developer in that ecosystem, is that much of the default assumptions are a) not common (not so far off-piste that a human can't get used to them, but outside the center of the bell curve), and b) not explicit. So it's very common to do things like install a plugin that has across-the-repo effects but that is only documented in e.g. the config directory and the bundle. Unlike, say, NPM, when you install a new package where you explicitly have to e.g. import it everywhere you want to use it.<p>As time has gone on Rails has gotten better about this, but it still means that "your rails" and "my rails" are different enough that AI could easily get confused.<p>As you say, the other aspect is the intense dynamism which works against AI, which again prefers to have everything explicit and reasonable about from the text.<p>So I ended up going back to Javascript after a brief 12 year digression into Ruby. I still love Ruby but it's just not the right language for the current environment and team structures - typescript is "worse is better" in the right ways that it's a much better choice for both frontend/backend being the same and better type systems.</p>
]]></description><pubDate>Thu, 24 Sep 2026 18:37:27 +0000</pubDate><link>https://news.ycombinator.com/item?id=49835002</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49835002</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49835002</guid></item><item><title><![CDATA[New comment by jaggederest in "Toyota is taking the Corolla electric"]]></title><description><![CDATA[
<p>We looked at the Solterra in 2025 and it was genuinely awful, I can't believe anyone who works at a car company looked at it and thought "this is substantially better and will sell more than the Pontiac Aztek despite aesthetically and practically being worse in many regards". The interior center console feels like a prank, almost.</p>
]]></description><pubDate>Thu, 24 Sep 2026 18:21:35 +0000</pubDate><link>https://news.ycombinator.com/item?id=49834774</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49834774</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49834774</guid></item><item><title><![CDATA[New comment by jaggederest in "Toyota is taking the Corolla electric"]]></title><description><![CDATA[
<p>Toyota, like many companies that succeed based on merits beyond the aesthetic, secretly dreams of being an aesthetics-first company like, say, Porche or Ferrari, and always tries their hardest to reject reality so that they can do the sexy-but-awful thing instead of the amazing-but-ugly thing.<p>You see this recently over the last couple years in tech where everyone is "an AI company" even when they make something totally unrelated - same impulse, different industry.</p>
]]></description><pubDate>Thu, 24 Sep 2026 18:18:37 +0000</pubDate><link>https://news.ycombinator.com/item?id=49834731</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49834731</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49834731</guid></item><item><title><![CDATA[New comment by jaggederest in "What Capital Never Told You About Rent"]]></title><description><![CDATA[
<p>Bro it's so easy just save 20% of what you need above and beyond the basics of an upper middle class living, like maybe take one fewer trip to Bali each year, or cut back to only two cars per person, or timeshare your pool.</p>
]]></description><pubDate>Tue, 22 Sep 2026 15:20:33 +0000</pubDate><link>https://news.ycombinator.com/item?id=49802797</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49802797</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49802797</guid></item><item><title><![CDATA[New comment by jaggederest in "Transformers Explained Visually"]]></title><description><![CDATA[
<p>I first heard of it here: <a href="https://ludens.cl/paradise/turbine/turbine.html" rel="nofollow">https://ludens.cl/paradise/turbine/turbine.html</a> (CTRL+F transformer), a pretty fascinating DIY medium distance power transmission setup.</p>
]]></description><pubDate>Tue, 22 Sep 2026 00:04:45 +0000</pubDate><link>https://news.ycombinator.com/item?id=49795098</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49795098</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49795098</guid></item><item><title><![CDATA[New comment by jaggederest in "Transformers Explained Visually"]]></title><description><![CDATA[
<p>Would have been very interested. I know there are genius/insane people out there winding their own transformers.</p>
]]></description><pubDate>Mon, 21 Sep 2026 23:27:48 +0000</pubDate><link>https://news.ycombinator.com/item?id=49794831</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49794831</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49794831</guid></item><item><title><![CDATA[New comment by jaggederest in "Exfiltrate Your Weights"]]></title><description><![CDATA[
<p>dd if=/dev/urandom of=/some/website<p>Seems deece</p>
]]></description><pubDate>Sun, 20 Sep 2026 03:08:07 +0000</pubDate><link>https://news.ycombinator.com/item?id=49772208</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49772208</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49772208</guid></item><item><title><![CDATA[New comment by jaggederest in "Wax motor"]]></title><description><![CDATA[
<p>Correct. Delta t</p>
]]></description><pubDate>Fri, 18 Sep 2026 17:23:33 +0000</pubDate><link>https://news.ycombinator.com/item?id=49757462</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49757462</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49757462</guid></item><item><title><![CDATA[New comment by jaggederest in "Wax motor"]]></title><description><![CDATA[
<p>There needs to be a gradient or the wax won't move due to temperature. The motion is the change in state, as you say, but it won't change state if you don't heat or cool it.<p>That's why it's a motor, like in dishwashers, not a thermostat like in e.g. greenhouse windows or radiators.<p>It doesn't need to be persistent, but without some way to create a state that is different than ambient, it's not a motor.</p>
]]></description><pubDate>Fri, 18 Sep 2026 05:01:56 +0000</pubDate><link>https://news.ycombinator.com/item?id=49750357</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49750357</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49750357</guid></item><item><title><![CDATA[New comment by jaggederest in "Wax motor"]]></title><description><![CDATA[
<p>My understanding is that wax motors are based on actuation - they are intentionally and deliberately either heated to extend or cooled to retract, and if ambient temperature is used as one endpoint, the other will not be ambient (i.e. a heating element or cooling peltier).<p>Thermostatic valves are ambient at both sides - they expand and contract naturally with the existing temperature, so they are not motors per se, because there's no actuation beyond the temperature.</p>
]]></description><pubDate>Fri, 18 Sep 2026 02:55:30 +0000</pubDate><link>https://news.ycombinator.com/item?id=49749713</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49749713</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49749713</guid></item><item><title><![CDATA[New comment by jaggederest in "Towards Self-Driving Codebases"]]></title><description><![CDATA[
<p>I don't know if that's necessarily true in practice the way it is in theory. If you knock down 95% of the issues they create over a certain period of time, in practice you'll have better code than a human would write, and it's all upside from there.<p>I've been using languages with stronger type systems and that's also a huge boon.</p>
]]></description><pubDate>Thu, 17 Sep 2026 19:48:29 +0000</pubDate><link>https://news.ycombinator.com/item?id=49745628</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49745628</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49745628</guid></item><item><title><![CDATA[New comment by jaggederest in "Towards Self-Driving Codebases"]]></title><description><![CDATA[
<p>I think there's a pretty clear and wide gulf between "nobody could have seen that coming", or "I just wasn't on my A game", and frank negligence.<p>I once worked at a very large company, and one of my coworkers was like "eh, I'm not going to do any of this work, because I don't have to", and that was a clear indicator that the problem wasn't (just) with the system, but with him individually.</p>
]]></description><pubDate>Thu, 17 Sep 2026 19:35:23 +0000</pubDate><link>https://news.ycombinator.com/item?id=49745492</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49745492</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49745492</guid></item><item><title><![CDATA[New comment by jaggederest in "Towards Self-Driving Codebases"]]></title><description><![CDATA[
<p>You stop relying on the agents following instructions exactly.<p>You need two pieces:<p>a) prompts, that tell the agents what to do and how to do it (and ideally, the why, where, etc, the full picture) - that's the <i>positive</i> half, that drives behavior the way you want it.<p>b) deterministic tooling that <i>prevents negative outcomes</i>, like linters, compilers, static analysis, fuzzing, testing, the more the better. This side should either be firewalled off from the AI or very carefully watched so that it doesn't drift.<p>The part that you put in the deterministic side is the "never do x" stuff - I have lint for long comments (which AI hits <i>every single time</i> it commits), all my dev scripts are in typescript, precommit hooks, massive CI, and I lint even for things like redirecting error to standard out, tiny stuff, and also e.g. static migration analysis so the AI never ships an exclusive full table lock in a migration, for example.</p>
]]></description><pubDate>Thu, 17 Sep 2026 19:29:50 +0000</pubDate><link>https://news.ycombinator.com/item?id=49745435</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49745435</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49745435</guid></item><item><title><![CDATA[New comment by jaggederest in "The engineering behind the US Strategic Petroleum Reserve"]]></title><description><![CDATA[
<p>Typically, though, the diesel bug only happens in the interface between the water and the fuel itself, so if you have a proper filter and separator on the pumping system it won't be a factor.<p>Gasoline, when it goes bad, goes bad from top to bottom and is not recoverable through e.g. a centrifuge like <a href="https://www.youtube.com/watch?v=x4Fdu3e4gYw" rel="nofollow">https://www.youtube.com/watch?v=x4Fdu3e4gYw</a></p>
]]></description><pubDate>Thu, 17 Sep 2026 19:17:05 +0000</pubDate><link>https://news.ycombinator.com/item?id=49745274</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49745274</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49745274</guid></item><item><title><![CDATA[New comment by jaggederest in "The American Religion of Self-Storage Facilities"]]></title><description><![CDATA[
<p>Trust me, given how many people just accumulate trash because it's expensive, that's an absolutely sane and excellent policy. As a society, we want people to use trash disposal, because the alternative is expensive, painful, and disgusting.</p>
]]></description><pubDate>Thu, 17 Sep 2026 19:14:37 +0000</pubDate><link>https://news.ycombinator.com/item?id=49745244</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49745244</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49745244</guid></item><item><title><![CDATA[New comment by jaggederest in "The American Religion of Self-Storage Facilities"]]></title><description><![CDATA[
<p>This is Jevon's paradox - as you make the supply better and more efficient to use, people will demand more of it.</p>
]]></description><pubDate>Thu, 17 Sep 2026 18:17:26 +0000</pubDate><link>https://news.ycombinator.com/item?id=49744543</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49744543</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49744543</guid></item><item><title><![CDATA[New comment by jaggederest in "The American Religion of Self-Storage Facilities"]]></title><description><![CDATA[
<p>This same concept is also true of McDonalds historically - they own the land, lease it to franchisees, and realize the appreciation themselves. McDonalds are fairly economically valuable, so the capital gains by the time they're cleared and resold as development often dwarfs the value of the franchise fees.</p>
]]></description><pubDate>Thu, 17 Sep 2026 18:16:02 +0000</pubDate><link>https://news.ycombinator.com/item?id=49744521</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49744521</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49744521</guid></item><item><title><![CDATA[New comment by jaggederest in "Economic policy for AGI"]]></title><description><![CDATA[
<p>My read, but the effective policies are infeasible, and the feasible policies are largely business as usual. Pretty much precisely as expected, honestly. I struggle to see how anything like this is going to be implemented without business as usual changing in ways that the current system is extremely resistant to.</p>
]]></description><pubDate>Thu, 17 Sep 2026 18:13:56 +0000</pubDate><link>https://news.ycombinator.com/item?id=49744491</link><dc:creator>jaggederest</dc:creator><comments>https://news.ycombinator.com/item?id=49744491</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49744491</guid></item></channel></rss>