<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: adolph</title><link>https://news.ycombinator.com/user?id=adolph</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Tue, 28 Jul 2026 00:38:21 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=adolph" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by adolph in "First Robotic Satellite Servicer Launched"]]></title><description><![CDATA[
<p>What sort of interesting actuators are used that people might not commonly think of? (I'm thinking of interesting solutions like the JWST's mirror actuators [0].)<p>0. <a href="https://hackaday.com/2022/02/08/working-model-reveals-amazing-engineering-of-webbs-mirror-actuators/" rel="nofollow">https://hackaday.com/2022/02/08/working-model-reveals-amazin...</a></p>
]]></description><pubDate>Mon, 27 Jul 2026 19:08:23 +0000</pubDate><link>https://news.ycombinator.com/item?id=49074257</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=49074257</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49074257</guid></item><item><title><![CDATA[New comment by adolph in "Apple Will 'Watch Everything Burn' When the AI Bubble Bursts"]]></title><description><![CDATA[
<p>I think the reasoning is similar to why Amazon notification emails are very generic: user data is used for various purposes that a growing number of users and 3rd parties have concerns about.<p>In addition to on-device, Apple is making efforts to secure computations that need to occur off-device, see: <a href="https://security.apple.com/documentation/private-cloud-compute" rel="nofollow">https://security.apple.com/documentation/private-cloud-compu...</a></p>
]]></description><pubDate>Mon, 27 Jul 2026 16:14:34 +0000</pubDate><link>https://news.ycombinator.com/item?id=49071718</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=49071718</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49071718</guid></item><item><title><![CDATA[New comment by adolph in "Clinical failure rates over the decades: yikes"]]></title><description><![CDATA[
<p>Failures also have lots of valuable information. There was a recent Complex Systems podcast about efforts to glean pharma trials.<p><a href="https://www.complexsystemspodcast.com/episodes/ruxandra-teslo/" rel="nofollow">https://www.complexsystemspodcast.com/episodes/ruxandra-tesl...</a></p>
]]></description><pubDate>Sun, 26 Jul 2026 02:58:07 +0000</pubDate><link>https://news.ycombinator.com/item?id=49054243</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=49054243</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49054243</guid></item><item><title><![CDATA[New comment by adolph in "SpaceX Starship Flight 13 livestream [video]"]]></title><description><![CDATA[
<p>Its amazing to see this beast and think that all the firey stuff isn't the primary energy source (although totally necessary to pushing the mass out the back fast enough).<p><pre><code>  The reason it’s very small is that almost all of the energy in hydrogen and oxygen is not stored in the chemical binding energy of these things going together.

  The vast majority of it is stored in just the rest mass energy of the protons and the neutrons, which chemical burning doesn’t affect at all.
</code></pre>
<a href="https://www.dwarkesh.com/p/adam-brown-gr" rel="nofollow">https://www.dwarkesh.com/p/adam-brown-gr</a><p>[Edit note: Starship and Booster are methalox, yes. The physicist is talking generically, not about this launch specifically)</p>
]]></description><pubDate>Fri, 24 Jul 2026 23:39:00 +0000</pubDate><link>https://news.ycombinator.com/item?id=49042944</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=49042944</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49042944</guid></item><item><title><![CDATA[New comment by adolph in "Astronomers may have found the first exomoon"]]></title><description><![CDATA[
<p>It might be helpful to describe gravitational relationships with human generational terms of parent-child, grandparent-grandchild, sibling, cousin, etc. So the Sun is the Moon's gravitational grandparent and Jupyter is its parent-sibling (Aunt/Uncle, maybe pibling upwards and nibling downwards).</p>
]]></description><pubDate>Thu, 23 Jul 2026 18:56:47 +0000</pubDate><link>https://news.ycombinator.com/item?id=49026428</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=49026428</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49026428</guid></item><item><title><![CDATA[New comment by adolph in "Does creatine make you smarter?"]]></title><description><![CDATA[
<p>My lay person understanding is that supplemental creatine screws with a common lab test to screen for kidney problems. Let your physician know if you are taking any supplements so they can interpret your lab test results appropriately or order different tests.<p><a href="https://www.kidney.org/kidney-topics/creatinine" rel="nofollow">https://www.kidney.org/kidney-topics/creatinine</a></p>
]]></description><pubDate>Wed, 22 Jul 2026 21:47:07 +0000</pubDate><link>https://news.ycombinator.com/item?id=49013907</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=49013907</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49013907</guid></item><item><title><![CDATA[New comment by adolph in "Full Scale Foldable Wing Extensions"]]></title><description><![CDATA[
<p>> Do you have any aircraft on mind that can unfold its wing while flying?<p>XB-70 Valkyrie</p>
]]></description><pubDate>Wed, 22 Jul 2026 21:41:13 +0000</pubDate><link>https://news.ycombinator.com/item?id=49013836</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=49013836</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49013836</guid></item><item><title><![CDATA[New comment by adolph in "Full Scale Foldable Wing Extensions"]]></title><description><![CDATA[
<p>Yeah, this is the first place my mind went with it. Aside from gate size category, folding wings could tighten up an overall airport like an aircraft carrier. Return to human-scale non-suburban airports (rip Mueller, Meigs et al).<p>The second place was the XB-70:<p><pre><code>  The XB-70 was designed to use compression lift, a phenomenon also referred to 
  as Mach wave riding, which was demonstrated with the help of wind-tunnel 
  tests. It was shown to provide an increase in total lift at supersonic speeds 
  as wingtips folded downward, and would capture the shock waves generated by 
  the aircraft. Wing lift could therefore significantly increase by up to 30% 
  without any drag penalty.
</code></pre>
<a href="https://commons.erau.edu/cgi/viewcontent.cgi?article=1343&context=ijaaa" rel="nofollow">https://commons.erau.edu/cgi/viewcontent.cgi?article=1343&co...</a></p>
]]></description><pubDate>Wed, 22 Jul 2026 21:39:19 +0000</pubDate><link>https://news.ycombinator.com/item?id=49013811</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=49013811</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49013811</guid></item><item><title><![CDATA[New comment by adolph in "I wrote an bash enumerator because I was sick of xargs"]]></title><description><![CDATA[
<p>As well as find has an -exec param to perform things one at a time or all with the same command by using a slash semicolon or a plus sign respectively:<p><pre><code>  #order files from different levels in a file hierarchy by size:
  find . -type f -maxdepth 1 -exec ls -hlrS {} +

  #output metadata for each file sequentially
  find . -type f -maxdepth 1 -exec file {} \;</code></pre></p>
]]></description><pubDate>Tue, 21 Jul 2026 22:29:49 +0000</pubDate><link>https://news.ycombinator.com/item?id=48999244</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=48999244</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48999244</guid></item><item><title><![CDATA[New comment by adolph in "I wrote an bash enumerator because I was sick of xargs"]]></title><description><![CDATA[
<p>find print0 with xargs 0 is such an awesome combination. One day I'll remember to use it instead of piping into while read ln; do ...</p>
]]></description><pubDate>Tue, 21 Jul 2026 22:23:39 +0000</pubDate><link>https://news.ycombinator.com/item?id=48999193</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=48999193</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48999193</guid></item><item><title><![CDATA[New comment by adolph in "AI Agent – TRMNL"]]></title><description><![CDATA[
<p>Out of the gate, Canada and the US share 1 as country code and includes entities that aren't countries like Globalstar (Mobile Satellite Service):<p><a href="https://en.wikipedia.org/wiki/List_of_telephone_country_codes" rel="nofollow">https://en.wikipedia.org/wiki/List_of_telephone_country_code...</a></p>
]]></description><pubDate>Tue, 21 Jul 2026 20:06:01 +0000</pubDate><link>https://news.ycombinator.com/item?id=48997494</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=48997494</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48997494</guid></item><item><title><![CDATA[New comment by adolph in "Sealed tomb filled with paintings and inscriptions discovered in Egypt"]]></title><description><![CDATA[
<p>Her family had been in Egypt for 250 years, that's a long time for genetic admixture. Otoh, <i>Continuing the tradition established by previous Egyptian dynasties, the Ptolemies engaged in inbreeding including sibling marriage, with many of the pharaohs being married to their siblings and often co-ruling with them.</i><p><pre><code>  Ptolemy I Soter (305–282 BC)
  [... 20 people ...]
  Cleopatra VII Thea Philopator (51–30 BC)
</code></pre>
<a href="https://en.wikipedia.org/wiki/Ptolemaic_dynasty" rel="nofollow">https://en.wikipedia.org/wiki/Ptolemaic_dynasty</a><p>Edit to append a topical story:<p><i>Birmingham native and civil rights activist Angela Davis, known as a part of the Black Power movement of the early 1970s, was shocked to learn that she is descended from a passenger on the Mayflower, one of the first settlers in America.</i><p><a href="https://www.al.com/life/2023/02/civil-rights-activist-angela-davis-learns-shes-a-descendant-of-mayflower-pilgrim.html" rel="nofollow">https://www.al.com/life/2023/02/civil-rights-activist-angela...</a></p>
]]></description><pubDate>Mon, 20 Jul 2026 13:08:03 +0000</pubDate><link>https://news.ycombinator.com/item?id=48978361</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=48978361</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48978361</guid></item><item><title><![CDATA[New comment by adolph in "How Has Roman Concrete Lasted for Millennia? 1,900-Year-Old Latrine Offers Clues"]]></title><description><![CDATA[
<p>This is something I wasn't aware of that is fascinating. The ph balance of the rebar's environment determines the progression of oxidation. There was a guy in the 1920's who observed this and had the idea to put cement in paint; it was so successful he renamed the company to cement spelled backwards.<p><pre><code>  Inside the concrete, Ca(OH)₂, which is generated by the hydration of cement, 
  creates a strongly alkaline environment, with a pH value of more than 12.7. 
  In this environment, a passivation film forms on the surface of the rebar to 
  prevent corrosion. However, the pH of the concrete decreases as micro-cracks 
  develops and chloride from the outside infiltrates the rebar. Eventually, as 
  the environment inside the concrete becomes neutralized, the corrosion of the 
  rebar accelerates, which reduces the overall durability and stability of the 
  reinforced concrete structure.
</code></pre>
<a href="https://www.sciencedirect.com/science/article/pii/S095006182503908X" rel="nofollow">https://www.sciencedirect.com/science/article/pii/S095006182...</a><p><pre><code>  A sighting of preserved steel reinforcing bars sticking out of old concrete 
  rubble piqued the curiosity of our company founder, Albert C. Bean, Sr. After 
  investigating this finding, his company, Armor Oil & Chemical Company, began 
  producing a patented cement-filled coating formulation that, in its updated 
  form, still protects structures from corrosion today.
</code></pre>
<a href="https://tnemec.com/about/" rel="nofollow">https://tnemec.com/about/</a></p>
]]></description><pubDate>Fri, 17 Jul 2026 14:52:32 +0000</pubDate><link>https://news.ycombinator.com/item?id=48948094</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=48948094</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48948094</guid></item><item><title><![CDATA[New comment by adolph in "LAPD lets contract with surveillance giant Flock expire"]]></title><description><![CDATA[
<p>> installed under some works dept land/pole/utility access permits<p>Another option might be right of way or easement permitting, similar to how utility poles and such are regulated as private property with an allowance to be in a public space. If the provider got a permit to use the right of way separate from the contract, then the provider would retain the same right to be there as any other infrastructure.</p>
]]></description><pubDate>Mon, 13 Jul 2026 21:42:10 +0000</pubDate><link>https://news.ycombinator.com/item?id=48899303</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=48899303</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48899303</guid></item><item><title><![CDATA[New comment by adolph in "Leak of San Francisco Police Drone Footage Exposes Reality of Urban Surveillance"]]></title><description><![CDATA[
<p>> So these are only being used on active calls.<p>I see your distinction better now. The Reynolds essay speaks a little more to the issue at hand. Essentially the technology allows for scope creep. Previously the limiting factor for physical police surveillance was officer FTEs, which creates a lower bound for the conditions that predicate an "active call." When this constraint is lifted, then <i>Prosecutors could easily fall prey to the temptation of “picking the man, and then searching the law books . . . to pin some offense on him.”</i></p>
]]></description><pubDate>Mon, 13 Jul 2026 16:03:55 +0000</pubDate><link>https://news.ycombinator.com/item?id=48894729</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=48894729</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48894729</guid></item><item><title><![CDATA[New comment by adolph in "Leak of San Francisco Police Drone Footage Exposes Reality of Urban Surveillance"]]></title><description><![CDATA[
<p>'I've Got Nothing to Hide' and Other Misunderstandings of Privacy<p><i>In this short essay, written for a symposium in the San Diego Law Review, Professor Daniel Solove examines the nothing to hide argument. When asked about government surveillance and data mining, many people respond by declaring: "I've got nothing to hide." According to the nothing to hide argument, there is no threat to privacy unless the government uncovers unlawful activity, in which case a person has no legitimate justification to claim that it remain private. The nothing to hide argument and its variants are quite prevalent, and thus are worth addressing. In this essay, Solove critiques the nothing to hide argument and exposes its faulty underpinnings.</i><p><a href="https://scholarship.law.gwu.edu/faculty_publications/158/" rel="nofollow">https://scholarship.law.gwu.edu/faculty_publications/158/</a><p>See also "Ham Sandwich Nation: Due Process When Everything is a Crime"<p><i>The result of overcriminalization is that prosecutors no longer need to
wait for obvious signs of a crime. Instead of finding Professor Plum dead in the
conservatory and launching an investigation, authorities can instead start an
investigation of Colonel Mustard as soon as someone has suggested he is a
shady character.</i><p><a href="https://columbialawreview.org/wp-content/uploads/2016/05/Reynolds-113-Colum.-L.-Rev.-Sidebar-102.pdf" rel="nofollow">https://columbialawreview.org/wp-content/uploads/2016/05/Rey...</a></p>
]]></description><pubDate>Mon, 13 Jul 2026 13:54:40 +0000</pubDate><link>https://news.ycombinator.com/item?id=48892719</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=48892719</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48892719</guid></item><item><title><![CDATA[New comment by adolph in "Leak of San Francisco Police Drone Footage Exposes Reality of Urban Surveillance"]]></title><description><![CDATA[
<p>Here is a RadioLab podcast [0] about the system from company Persistent Surveillance Systems [1].<p>An interesting dimension to systems similar to the US military's Gorgon Stare [2] program is that they are generalized rather than specific, unlike a quad following a specific person(s).<p>0. <a href="https://radiolab.org/podcast/eye-sky" rel="nofollow">https://radiolab.org/podcast/eye-sky</a><p>1. <a href="https://www.pss-1.com/" rel="nofollow">https://www.pss-1.com/</a><p>2. <a href="https://longreads.com/2019/06/21/nothing-kept-me-up-at-night-the-way-the-gorgon-stare-did/" rel="nofollow">https://longreads.com/2019/06/21/nothing-kept-me-up-at-night...</a></p>
]]></description><pubDate>Mon, 13 Jul 2026 13:46:47 +0000</pubDate><link>https://news.ycombinator.com/item?id=48892613</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=48892613</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48892613</guid></item><item><title><![CDATA[New comment by adolph in "QuadRF can spot drones and see WiFi through my wall"]]></title><description><![CDATA[
<p>Is that a limitation of the antenna? I though QuadRF uses SDR so can see many frequencies, not just the wifi things like ESPARGOS [0]<p>From documentation, QuadRF: Operating frequency range of 4.9 - 6.0 GHz (C-Band).<p>0. <a href="https://espargos.net/" rel="nofollow">https://espargos.net/</a></p>
]]></description><pubDate>Fri, 10 Jul 2026 16:40:58 +0000</pubDate><link>https://news.ycombinator.com/item?id=48862287</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=48862287</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48862287</guid></item><item><title><![CDATA[New comment by adolph in "PlayStation can delete all your digital games after 3 years of inactivity (EU)"]]></title><description><![CDATA[
<p>Maintenance isn't cost-free. As an example, the operating system and other software dependencies of the game depends will eventually be depreciated and not supported.<p>If a security vulnerability is discovered in software still available from company servers but the teams that built it have moved on, what is the company's liability for recomposing teams in order to make a fix that does not negatively affect other aspects of the software?</p>
]]></description><pubDate>Thu, 09 Jul 2026 14:05:37 +0000</pubDate><link>https://news.ycombinator.com/item?id=48846092</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=48846092</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48846092</guid></item><item><title><![CDATA[New comment by adolph in "PlayStation can delete all your digital games after 3 years of inactivity (EU)"]]></title><description><![CDATA[
<p>This isn't surprising given how different businesses may value a payment against an ongoing obligation to customers. @patio11 had a good podcast about this "Cash received is not revenue earned" last April.<p><pre><code>  What the GoDaddy CEO said in many interviews and investor presentations is: 
  "Look, since we're not going out of business, and since the cost of serving 
  domain names is essentially the same whether we're serving a million of them 
  versus a hundred million of them, you should really treat this as a 
  cash-and-carry business. So all of the money that comes in this year is our 
  revenue, regardless of this massive balance sheet item that says deferred 
  revenue." What sophisticated investors looking at GoDaddy said was, "Well, 
  no. You do have to still keep running the business. And so from my 
  perspective, it looks like GoDaddy is incredibly levered. You've got so much 
  debt on the books. The debt isn't to a bank or to a private credit fund–it's 
  just to your customers. But oh goodness, is there a lot of debt. And since 
  that debt must get satisfied before US equity holders get the residual value 
  of the company, we are not willing to extend equity investment at the 
  valuation you think you're worth."
  </code></pre>
<a href="https://www.complexsystemspodcast.com/episodes/cash-received-is-not-revenue-earned/" rel="nofollow">https://www.complexsystemspodcast.com/episodes/cash-received...</a></p>
]]></description><pubDate>Wed, 08 Jul 2026 20:27:55 +0000</pubDate><link>https://news.ycombinator.com/item?id=48837013</link><dc:creator>adolph</dc:creator><comments>https://news.ycombinator.com/item?id=48837013</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48837013</guid></item></channel></rss>