<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: theoh</title><link>https://news.ycombinator.com/user?id=theoh</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Tue, 21 Jul 2026 21:04:48 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=theoh" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by theoh in "What does an unprocessed RAW file look like?"]]></title><description><![CDATA[
<p>The scenario I'm talking about is not synthesising a RAW file from scratch, but being able to freely edit it and save the result back into a RAW file that looks "original". I don't think you've made any statements that indicate that doing that would be complex.<p>Again, this is not about faking a RAW file from scratch, just being able to edit it in place.</p>
]]></description><pubDate>Thu, 18 Jul 2019 23:34:49 +0000</pubDate><link>https://news.ycombinator.com/item?id=20475018</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20475018</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20475018</guid></item><item><title><![CDATA[New comment by theoh in "What does an unprocessed RAW file look like?"]]></title><description><![CDATA[
<p>Interestingly, some major photo competitions require 'original' RAW files to be submitted along with processed  jpegs. The idea is that they can check that the image hasn't been modified in a way that breaks the rules.<p>Of course, software people know that it would be tedious but technically straightforward to concoct a fake RAW file from another 'raw' format such as a PPM image. The stakes in these competitions can be quite high so it's a bit disconcerting that they rely on a presumption that converting RAW files to editable images is a one-way process.</p>
]]></description><pubDate>Thu, 18 Jul 2019 22:34:19 +0000</pubDate><link>https://news.ycombinator.com/item?id=20474596</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20474596</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20474596</guid></item><item><title><![CDATA[New comment by theoh in "Inverting back the inversion of control (2003) [pdf]"]]></title><description><![CDATA[
<p>Just the other day someone posted something here about defunctionalizing continuations. That's the way to go: whatever amount of state the server has to hold, you have to hold anyway, and clever defunctionalization will let you just hold that amount even with a continuation-based approach.</p>
]]></description><pubDate>Wed, 17 Jul 2019 16:19:41 +0000</pubDate><link>https://news.ycombinator.com/item?id=20461133</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20461133</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20461133</guid></item><item><title><![CDATA[New comment by theoh in "Inverting back the inversion of control (2003) [pdf]"]]></title><description><![CDATA[
<p>The paper is literally about doing away with the inversion of control.</p>
]]></description><pubDate>Wed, 17 Jul 2019 16:09:35 +0000</pubDate><link>https://news.ycombinator.com/item?id=20460999</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20460999</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20460999</guid></item><item><title><![CDATA[New comment by theoh in "Inverting back the inversion of control (2003) [pdf]"]]></title><description><![CDATA[
<p>The concept of continuations is well-established and they have their uses. They have been part of the landscape for years. They can be confusing, and that's impossible to separate from their power.<p>The inversion of control that this paper is talking about is the way an application running on a webserver typically gets called by the browser rather than the other way around. Continuation-based webservers reverse this inversion and create an illusion of continuity of control flow on the server side. The application is suspended when a page is sent to the browser and resumed (via a continuation) when the response arrives. So this is about permitting server-side applications to be written in a nicer style as far as control flow is concerned.<p>I think you are getting downvoted because your comment more or less says that you don't know much about the background, and haven't read and understood the paper, but are inclined to dismiss it anyway.</p>
]]></description><pubDate>Wed, 17 Jul 2019 13:12:29 +0000</pubDate><link>https://news.ycombinator.com/item?id=20459025</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20459025</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20459025</guid></item><item><title><![CDATA[New comment by theoh in "Calculus for Beginners and Artists (2003)"]]></title><description><![CDATA[
<p>This comment is like a red rag to a bull for me, because why wouldn't some artists want a basic grasp of calculus?<p>Bear in mind that a secondary education, for most people, involves learning the basics of calculus. You might be thinking that all artists are bad at math or too stupid to grasp calculus. You might be thinking that there are no applications of calculus in art. I don't know. But given the role artists are supposed to play in society, it seems pretty reasonable to expect that some of them will have an interest in learning calculus to a high school level like a significant fraction of the non-specialist public.<p>A concrete example of this might be an artist who is interested in systems theory from an ecological perspective. Once you start talking about stocks and flows (of fish or minerals or greenhouse gases) then calculus and differential equations are really the next thing to tackle.</p>
]]></description><pubDate>Sun, 14 Jul 2019 18:35:39 +0000</pubDate><link>https://news.ycombinator.com/item?id=20435010</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20435010</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20435010</guid></item><item><title><![CDATA[New comment by theoh in "For 40 Years, Crashing Trains Was One of America’s Favorite Pastimes"]]></title><description><![CDATA[
<p>No, as the voiceover says, it was a much less powerful Class 46 (46009).<p><a href="https://en.wikipedia.org/wiki/British_Rail_Class_46" rel="nofollow">https://en.wikipedia.org/wiki/British_Rail_Class_46</a></p>
]]></description><pubDate>Wed, 10 Jul 2019 09:09:54 +0000</pubDate><link>https://news.ycombinator.com/item?id=20400338</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20400338</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20400338</guid></item><item><title><![CDATA[New comment by theoh in "Observable’s Not JavaScript"]]></title><description><![CDATA[
<p>I don't know the Observable folks personally, but I've been watching what they post on Twitter. It's not snobbery to say that the level of polish and sophistication present in what they put out (in terms of the reactive architecture <i>and</i> the graphic side of it) is second to none. Their product has got so much class that the idea that they would spend time on SEO is kind of incongruous, right?</p>
]]></description><pubDate>Fri, 14 Jun 2019 21:00:26 +0000</pubDate><link>https://news.ycombinator.com/item?id=20186638</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20186638</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20186638</guid></item><item><title><![CDATA[New comment by theoh in "Formatting floating point numbers"]]></title><description><![CDATA[
<p>See this article for an in-depth look at implementing these conversions: <a href="https://research.swtch.com/ftoa" rel="nofollow">https://research.swtch.com/ftoa</a></p>
]]></description><pubDate>Fri, 14 Jun 2019 12:00:19 +0000</pubDate><link>https://news.ycombinator.com/item?id=20182237</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20182237</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20182237</guid></item><item><title><![CDATA[New comment by theoh in "Writers Are More Prolific When They Cluster"]]></title><description><![CDATA[
<p>That particular example is discussed here: <a href="https://www.nytimes.com/1987/08/02/nyregion/authors-seek-muse-in-a-room.html" rel="nofollow">https://www.nytimes.com/1987/08/02/nyregion/authors-seek-mus...</a><p>Apparently one had to have a publishing contract to be admitted. I'm not sure how elitist that actually worked out to be.<p>There are also membership-funded places like <a href="http://www.writersroom.org/" rel="nofollow">http://www.writersroom.org/</a><p>I know more about how this works in the arts, where the relevant term is "residency". Access to exclusive residencies is usually allocated on the basis of previous career success, and they are usually funded by endowments of some kind. It's an example of institutional support for artists, and the top residencies are extremely elitist. There are lots of humble ones too, though.</p>
]]></description><pubDate>Thu, 13 Jun 2019 22:20:34 +0000</pubDate><link>https://news.ycombinator.com/item?id=20179102</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20179102</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20179102</guid></item><item><title><![CDATA[New comment by theoh in "Shazam-like technology used to identify bars illegally streaming soccer games"]]></title><description><![CDATA[
<p>There was a proposed system back in the 90s which involved multiple decryption keys. <a href="https://homes.cs.washington.edu/~mernst/pubs/heraclitean-tr9413-abstract.html" rel="nofollow">https://homes.cs.washington.edu/~mernst/pubs/heraclitean-tr9...</a></p>
]]></description><pubDate>Thu, 13 Jun 2019 16:07:14 +0000</pubDate><link>https://news.ycombinator.com/item?id=20176200</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20176200</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20176200</guid></item><item><title><![CDATA[New comment by theoh in "Hawk guidance system tuned for close pursuit of erratically maneuvering targets"]]></title><description><![CDATA[
<p>To describe the article as an application of modern control theory is an exaggeration; these rules (proportional navigation and proportional pursuit) are extremely simple and ancient. It's difficult to imagine a time when humans didn't intuitively understand the law described in the paper as proportional pursuit, and the idea behind proportional navigation predates guided missiles by hundreds if not thousands of years.<p>It's a relief that the heavy mathematical prerequisites of optimal control theory aren't needed to understand what the birds do.<p><a href="https://en.wikipedia.org/wiki/Proportional_navigation" rel="nofollow">https://en.wikipedia.org/wiki/Proportional_navigation</a>
<a href="https://en.wikipedia.org/wiki/Constant_bearing,_decreasing_range" rel="nofollow">https://en.wikipedia.org/wiki/Constant_bearing,_decreasing_r...</a></p>
]]></description><pubDate>Thu, 13 Jun 2019 12:44:50 +0000</pubDate><link>https://news.ycombinator.com/item?id=20174218</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20174218</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20174218</guid></item><item><title><![CDATA[New comment by theoh in "The Pentagon is battling the clock to fix serious, unreported F-35 problems"]]></title><description><![CDATA[
<p>Aeronautics is (still) an incredibly glamorous field, and fighter jets and aviation disasters are a stereotypical topic of fascination for male engineers. HN is all about the "cool", charismatic side of engineering, and it doesn't get much cooler than critiquing warplanes and analysing air disasters.<p>Geeking out about this kind of topic is routine for people with an interest in engineering. And let's be clear: it really is just a matter of geeking out, people getting a thrill out of playing at "appearing to really know their stuff".</p>
]]></description><pubDate>Thu, 13 Jun 2019 09:29:02 +0000</pubDate><link>https://news.ycombinator.com/item?id=20173035</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20173035</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20173035</guid></item><item><title><![CDATA[New comment by theoh in "Living on the wrong side of a time zone can be hazardous to your health"]]></title><description><![CDATA[
<p>You haven't taken into account the difference between mean solar time and apparent solar time. The system you describe is essentially the old local mean time <a href="https://en.wikipedia.org/wiki/Local_mean_time" rel="nofollow">https://en.wikipedia.org/wiki/Local_mean_time</a>.</p>
]]></description><pubDate>Tue, 11 Jun 2019 14:34:52 +0000</pubDate><link>https://news.ycombinator.com/item?id=20155767</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20155767</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20155767</guid></item><item><title><![CDATA[New comment by theoh in "Gaudí’s Sagrada Familia gets building permit after 137 years"]]></title><description><![CDATA[
<p><a href="https://de.m.wikipedia.org/wiki/H%C3%A4ngemodell" rel="nofollow">https://de.m.wikipedia.org/wiki/H%C3%A4ngemodell</a>
<a href="https://de.m.wikipedia.org/wiki/Kettenlinie_(Mathematik)" rel="nofollow">https://de.m.wikipedia.org/wiki/Kettenlinie_(Mathematik)</a><p>NB, the line taken by the cables of a suspension bridge with a deck of uniform weight <i>is</i> a parabola. I think this is what causes the popular confusion.</p>
]]></description><pubDate>Sun, 09 Jun 2019 12:06:57 +0000</pubDate><link>https://news.ycombinator.com/item?id=20138688</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20138688</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20138688</guid></item><item><title><![CDATA[New comment by theoh in "Let’s fix up Notre Dame with concrete and steel, but let the sun shine into it"]]></title><description><![CDATA[
<p>Thanks for the characteristically rude HN assumption that I don't know what I'm talking about.<p>I know all about Chipperfield, at least to the extent of having seen him lecture about his work in Berlin. He was inspired by Dollgast's work <a href="http://www.prewettbizley.com/graham-bizley-blog/dollgast" rel="nofollow">http://www.prewettbizley.com/graham-bizley-blog/dollgast</a>
and to be honest I don't see the contradiction with what I said. Not everything Chipperfield did in the Neues Museum falls into the category of "restoration" but the parts that do absolutely follow this principle of discreet but identifiable replacement.<p>Chipperfield on Dollgast:
<a href="http://www.youtube.com/watch?v=RfizDUjvomA&t=36m56s" rel="nofollow">http://www.youtube.com/watch?v=RfizDUjvomA&t=36m56s</a><p>See especially the bit at 38:30 where he talks about not confusing the original with the new (in archaeological reconstruction).<p>Here also is a reference to a 2013 book that says almost exactly what I said: <a href="https://books.google.ie/books?id=ddTZAAAAQBAJ&pg=PT366&dq=brick+replacement+%22venice+charter%22&hl=en&sa=X&ved=0ahUKEwiQ--3Tm8biAhUURhUIHdxSApUQ6AEIKjAA#v=onepage&q=brick%20replacement%20%22venice%20charter%22&f=false" rel="nofollow">https://books.google.ie/books?id=ddTZAAAAQBAJ&pg=PT366&dq=br...</a><p>Please don't further pollute the already toxic environment on HN by assuming the person you are talking to is incompetent, acting in bad faith, or knows less than you do.</p>
]]></description><pubDate>Fri, 31 May 2019 16:46:07 +0000</pubDate><link>https://news.ycombinator.com/item?id=20062560</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20062560</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20062560</guid></item><item><title><![CDATA[New comment by theoh in "Let’s fix up Notre Dame with concrete and steel, but let the sun shine into it"]]></title><description><![CDATA[
<p>The standard interpretation of this is something like the following:<p>If you replace an element (e.g. a brick) with a new brick, you should aim for it to blend in discreetly and convincingly with the existing structure BUT you should not try to conceal the fact that it is a repair (by distressing it, for example).</p>
]]></description><pubDate>Fri, 31 May 2019 15:02:13 +0000</pubDate><link>https://news.ycombinator.com/item?id=20061521</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20061521</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20061521</guid></item><item><title><![CDATA[New comment by theoh in "Terry Pratchett warns Bill Gates about fake news (1995)"]]></title><description><![CDATA[
<p>This is like the argument that comedians who make funny jokes about human nature must therefore have good insight into politics. Anyone who watches comedy knows that the ability to be funny doesn't equate to having a good analysis of the situation.</p>
]]></description><pubDate>Thu, 30 May 2019 20:52:40 +0000</pubDate><link>https://news.ycombinator.com/item?id=20055793</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20055793</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20055793</guid></item><item><title><![CDATA[New comment by theoh in "Terry Pratchett warns Bill Gates about fake news (1995)"]]></title><description><![CDATA[
<p>I think you are exaggerating the expertise of both men. Gates was successful, but that doesn't mean he had rock-solid knowledge of all aspects of business and technology. Pratchett wrote humorous fiction, but that doesn't make him an expert on sociology.<p>Pratchett's comment didn't require a lot of insight to come up with—it's just the (essentially reactionary) observation that publishing on the internet is a free-for-all. And Gates correctly observed that ranking systems like HITS (or PageRank) would recreate, online, the way information sources gain authority in the offline world.<p>The fake news problem has nothing to do with the web's openness—it thrives on FB. Offline, and independent of the web, the narrative Fox pushes is arguably very close to fake news as well. Neither Pratchett nor Gates displayed significant insight into the that kind of political problem.</p>
]]></description><pubDate>Thu, 30 May 2019 14:05:17 +0000</pubDate><link>https://news.ycombinator.com/item?id=20051210</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20051210</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20051210</guid></item><item><title><![CDATA[New comment by theoh in "The Boring Company will develop an underground “people mover” for Las Vegas"]]></title><description><![CDATA[
<p>Where did this title come from? I usually can't stand HN's fussing over titles but this one really seems tendentious.</p>
]]></description><pubDate>Wed, 29 May 2019 18:56:33 +0000</pubDate><link>https://news.ycombinator.com/item?id=20043988</link><dc:creator>theoh</dc:creator><comments>https://news.ycombinator.com/item?id=20043988</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20043988</guid></item></channel></rss>