<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: enjrolas</title><link>https://news.ycombinator.com/user?id=enjrolas</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Thu, 02 Jul 2026 04:41:59 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=enjrolas" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by enjrolas in "Newly discovered spider builds spring loaded snare to catch ants"]]></title><description><![CDATA[
<p>that's a good question -- the paper describes it triggering aggression in the ant within milliseconds of it probing the snare with its antenna.  I don't know the basis for it, but that's some down-to-the-metal ant programming right there</p>
]]></description><pubDate>Wed, 01 Jul 2026 15:17:42 +0000</pubDate><link>https://news.ycombinator.com/item?id=48748284</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=48748284</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48748284</guid></item><item><title><![CDATA[New comment by enjrolas in "Newly discovered spider builds spring loaded snare to catch ants"]]></title><description><![CDATA[
<p>The part from the paper which is so interesting is <i>why</i> the ant bites the trap in the first place.  The paper suggests that the spider puts out a pheromone that attracts the ant and triggers the ant to aggressively bite the snare, but <i>the pheromone only does this for the spider's target species, the green tree ant</i>.  The researchers watched three other ant species check out the snare, go "meh", and move on, unharmed, without showing any aggression towards the snare.</p>
]]></description><pubDate>Wed, 01 Jul 2026 11:34:27 +0000</pubDate><link>https://news.ycombinator.com/item?id=48745109</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=48745109</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48745109</guid></item><item><title><![CDATA[New comment by enjrolas in "Traintrackr – Live LED Maps"]]></title><description><![CDATA[
<p>ayyyyy great to see someone from my local hacking community on the front page!</p>
]]></description><pubDate>Sat, 24 Jan 2026 11:02:20 +0000</pubDate><link>https://news.ycombinator.com/item?id=46742571</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=46742571</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46742571</guid></item><item><title><![CDATA[New comment by enjrolas in "Ask HN: Who wants to be hired? (November 2024)"]]></title><description><![CDATA[
<p>Location:  Providence, RI<p><pre><code>  Remote: no

  Willing to relocate: yes

  Technologies: the very full stack -- designing and managing the creation of physical, electro-mechanical products, the electronics and firmware inside, and building web infrastructure around them.  
</code></pre>
Lots of different individual tech in there, but broadly:  CAD, PCB design, production and debugging, Python/C/C#/C++/Java/JS, Django<p><pre><code>  Résumé/CV: https://links.boondock.design/alex/cv

  Email: alex@alexhornstein.com</code></pre></p>
]]></description><pubDate>Fri, 01 Nov 2024 22:00:56 +0000</pubDate><link>https://news.ycombinator.com/item?id=42021989</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=42021989</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=42021989</guid></item><item><title><![CDATA[New comment by enjrolas in "Could a giant parasol in outer space help solve the climate crisis?"]]></title><description><![CDATA[
<p>I mean, that's true, but not relevant at the scale of the CO2 in the atmosphere.  Think about breathing from a paper bag - your exhaled breath contains about 4% CO2, and after several cycles of re-breathing the same air, that percentage will increase, and you'll start to notice the effects you described, in the range of parts per hundred.<p>CO2 from the ambient air you breathe is currently 0.04%, in the range of parts per ten thousand, two orders of magnitude lower than where you feel the effects you described.</p>
]]></description><pubDate>Fri, 09 Feb 2024 18:25:45 +0000</pubDate><link>https://news.ycombinator.com/item?id=39318362</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=39318362</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=39318362</guid></item><item><title><![CDATA[New comment by enjrolas in "Novel drug could protect brains from damage after repeat concussions"]]></title><description><![CDATA[
<p>Well, to be clear, the animals didn't volunteer.  We made the choice for them.  Some of these mice in this experiment were wild-type, others were actually specifically bred to have a certain genotype (the P17 knockout) that made them relevant to this experiment.  We created them for this particular chance to understand something about the brain and how to help it, and we kill them after we learn what we wanted.<p>This is a complex, nuanced topic, and yes, you're right, it is cruel to the mice (although, if you read the paper, they took steps to _minimize_ the mouse's suffering -- the mice were anaesthetized during the concussion, and they were euthanized after the experiment).  In order to perform an experiment in animals in a research setting, you have you propose your experiment to a ~5-person committee called an IACUC (every institution doing research on invertebrates has to have one), and they review your experiment to ensure that it meets their standards of being ethical, humane, and of sound experimental design.<p>Because of this system, we are able to work with animal models (often mice) that teach us a lot about how our own body works, how proposed drugs could be used to treat illnesses and injuries.  We do this because we really don't have a better system of learning about bodies.<p>We do have many _worse_ systems of learning about bodies.  Centuries of experiments (many in recent memory) of experiments on humans.  People experimenting with convicts, impoverished people, and people who someone decided are sub-human and are therefore ok to experiment on.  That's not to say that it's ok to cause suffering to animals because we also caused suffering to humans.  I bring it up because I actually derive some hope from it, that we are more aware of suffering and take more steps to reduce the suffering we cause in pursuit of knowledge.  I sincerely hope that that trend will continue.<p>In my day job, I'm a wildlife photographer.  I spend a lot of time watching animals.  I see animals kill and eat eachother.  I see animals get injured and sick, I see many animals die prolonged, painful deaths.  Causing animal suffering is not an exclusively human domain -- much of this also happens right next to our houses, just out of our sight or awareness.  I guarantee, wherever you live, that many animals are killed and eaten in your house every day, mostly without your knowledge.  
Of course, we cause our share of that suffering, as well, more through neglect than intent.  I see countless animals dying, entangled in plastic or with guts full of plastic chunks.  I see tens of thousands of fish in my city's rivers impaired or dying from chemicals in my city's runoff.  I watch otters and bald eagles happily eat those animals -- they're easy to catch, after all.  It's harder to be angry at the people who caused this suffering, because, well, we don't know who they are, and often _they_ don't know who they are.  They just chucked a plastic bag into the road, or made a mistake on a jobsite, or were just passive participants in a very flawed system.<p>Sometimes, we cause that suffering through intent.  Victor, the mousetrap company, has sold over a billion mousetraps, which we use because we find mice in our homes and cities to be a nuisance, or gross, or whatever the imagined offense is.  Take a walk through the pest control aisle at your local big box and take a moment to imagine the unmitigated suffering that each of those chemicals cause when it reaches its intended, or unintended, target.<p>I also volunteer in a wildlife rehab in my state -- whenever a wild animal is found injured, it ends up in this particular building (I live in a small state).  Each year, we get thousands of animals, often unintentionally but painfully injured by people.  Possums that get into the rat poison and show up bleeding from their face and hands.  Waterfowl that show up with lead poisoning from eating lost fishing weights.  More animals hit by cars than I can count.  Some animals are intentionally injured by people -- lots of bloody birds peppered with bullets, often airsoft or other non-lethal bullets that someone just shot because they were bored. We treat these animals.  Many get better, many don't. 
 We euthanize the animals that don't using the same method the scientists use in this paper -- isoflurane to anaesthetize and a second method to ensure that the animal has died painlessly.  I feel fine about this practice -- the goal of a rehab is to reduce harm in the wild population and to return healthy animals to the wild.  Not all injured animals get better, and the cold calculation is that it's kinder to kill the animal humanely and painlessly than to keep it alive in a state of suffering and stress.<p>My point is, the scale of animal suffering right outside your door is vast.  It's a noble effort to want to reduce that amount of suffering.  However, _most_ of the suffering that's around us in cities is pointless, un-intended suffering, and nobody gains anything from it -- the mouse in the glue trap or the fish stuck in a plastic bag.  It's true that these scientists are causing animal suffering, but it's also true that there is a point to it.  They are doing these experiments to understand and reduce future suffering, in people as well as animals (basically all the drugs we use in the wildlife rehab, for example, are the exact same drugs we use in human hospitals).  The suffering the scientists are causing is a drop in the bucket compared to what is happening each day, unseen, in the square block around your house.  It's easy to criticize their work because they are being honest about their methods -- that's part of what being a scientist means -- but in my opinion, if your goal is to reduce animal suffering, you're missing the forest for the trees.  Scientists are not the target you're looking for, both in terms of the scale of animals or the magnitude of suffering.<p>I will say, we have made dramatic improvements in how we understand medicine's effect on the body.  Computational chemistry and drug discovery has made giant strides in the past several decades, and that lets us learn by computation what we could previously only learn from animal trials.  Perhaps in the future we will be able to better understand complex mechanisms in the body and represent them in software, letting us try some or all of these ideas for fixing problems painlessly, in software, rather than in meatspace.  Maybe you'll help create that future.<p>I'll end with what I feel is a touching piece of art -- in Siberia, there is a statue called the Monument to the Laboratory Mouse (<a href="https://en.wikipedia.org/wiki/Monument_to_the_laboratory_mouse" rel="nofollow">https://en.wikipedia.org/wiki/Monument_to_the_laboratory_mou...</a>).  It stands tribute to the countless mice who gave their lives in pursuit of knowledge, and the statue, if you look at it, is a blend of a mouse and a scientist, recognizing the link between their lives and the knowledge that comes from both those lives.  It's a complex piece of art that acknowledges a complex topic, I appreciate it, and maybe you will, too.</p>
]]></description><pubDate>Thu, 08 Feb 2024 16:18:20 +0000</pubDate><link>https://news.ycombinator.com/item?id=39303751</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=39303751</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=39303751</guid></item><item><title><![CDATA[New comment by enjrolas in "Gooey: Turn almost any Python command line program into a full GUI application"]]></title><description><![CDATA[
<p>Hey, I just want to say thanks for making this wonderful piece of software!  I love gooey and have used it extensively for several different programs.  For me, it perfectly fits this area where you have a python script that does something important, and now you need to set it up so that non-programmers can use it as well.</p>
]]></description><pubDate>Sun, 10 Dec 2023 15:42:22 +0000</pubDate><link>https://news.ycombinator.com/item?id=38592258</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=38592258</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=38592258</guid></item><item><title><![CDATA[New comment by enjrolas in "I think AI would kill my wife"]]></title><description><![CDATA[
<p>> even if there are no APIs that fire a gun.<p>YC summer season applications are due soon.  TIME TO DISRUPT!</p>
]]></description><pubDate>Fri, 17 Feb 2023 14:09:07 +0000</pubDate><link>https://news.ycombinator.com/item?id=34834800</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=34834800</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=34834800</guid></item><item><title><![CDATA[New comment by enjrolas in "Emergency declared and curfew imposed following North Carolina power grid attack"]]></title><description><![CDATA[
<p>Awww yeah</p>
]]></description><pubDate>Mon, 05 Dec 2022 02:20:36 +0000</pubDate><link>https://news.ycombinator.com/item?id=33860630</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=33860630</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=33860630</guid></item><item><title><![CDATA[New comment by enjrolas in "Launch HN: Micro Meat (YC S21) – Technology for scaling cultivated meat"]]></title><description><![CDATA[
<p>> Humans have an enormous capacity for empathy and kindness, but we're also capable of some truly horrific acts.<p>(fixed that for you)</p>
]]></description><pubDate>Fri, 11 Mar 2022 14:08:16 +0000</pubDate><link>https://news.ycombinator.com/item?id=30640053</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=30640053</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=30640053</guid></item><item><title><![CDATA[New comment by enjrolas in "Metallurgist admits faking steel test results for US Navy subs"]]></title><description><![CDATA[
<p>The NYT article about this same issue (<a href="https://www.nytimes.com/2021/11/08/us/metallurgist-navy-false-steel-tests.html" rel="nofollow">https://www.nytimes.com/2021/11/08/us/metallurgist-navy-fals...</a>) mentions that Bradken is "the Navy's leading supplier of cast, high-yield steel used for naval submarines."   Without knowing the intricacies of the cast of suppliers for submarine parts, it's a safe bet that blacklisting Bradken would set back a _lot_ of naval construction projects by a significant amount.  I imagine that dampens the enthusiasm within the Navy for crucifying Bradken as an example for the rest of 'em.  
If I were a competing foundry, and I had seen this coming and was in a position to show up this week with detailed quotes and delivery dates for replacements for Bradken's upcoming work, that might be a huge win for me.  My guess is that there's a way for another company to 'pull' the Navy out of this massive logjam, but the Navy can't easily 'push' itself out.</p>
]]></description><pubDate>Tue, 09 Nov 2021 16:36:38 +0000</pubDate><link>https://news.ycombinator.com/item?id=29163909</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=29163909</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=29163909</guid></item><item><title><![CDATA[New comment by enjrolas in "'I was completely inside': Lobster diver swallowed by humpback whale"]]></title><description><![CDATA[
<p>Another cameraman got gobbled by a Bryde's whale while he was filming a bait ball off the coast of South Africa a couple years ago.  His wife took photos of him while he was half in the whale.  Fortunately, the whale spat him out a few seconds later.
As soon as he got out of the whale, he swam up to his wife to ask, "did you get it?"
<a href="https://www.youtube.com/watch?v=ChcEb6mlEUo" rel="nofollow">https://www.youtube.com/watch?v=ChcEb6mlEUo</a> (worth the watch)</p>
]]></description><pubDate>Sat, 12 Jun 2021 02:39:15 +0000</pubDate><link>https://news.ycombinator.com/item?id=27480962</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=27480962</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=27480962</guid></item><item><title><![CDATA[New comment by enjrolas in "Show HN: Moving from a desktop hologram lab to a 3D hologram printer"]]></title><description><![CDATA[
<p>to the future!</p>
]]></description><pubDate>Wed, 18 Mar 2020 22:08:45 +0000</pubDate><link>https://news.ycombinator.com/item?id=22621800</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=22621800</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=22621800</guid></item><item><title><![CDATA[New comment by enjrolas in "The Looking Glass – Holographic Display"]]></title><description><![CDATA[
<p>Aaaand we're back</p>
]]></description><pubDate>Thu, 03 Jan 2019 21:22:14 +0000</pubDate><link>https://news.ycombinator.com/item?id=18819413</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=18819413</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=18819413</guid></item><item><title><![CDATA[New comment by enjrolas in "The Looking Glass – Holographic Display"]]></title><description><![CDATA[
<p>working on this now, thanks HN :)</p>
]]></description><pubDate>Thu, 03 Jan 2019 20:44:35 +0000</pubDate><link>https://news.ycombinator.com/item?id=18819106</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=18819106</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=18819106</guid></item><item><title><![CDATA[New comment by enjrolas in "Looking Glass – A new type of holographic interface"]]></title><description><![CDATA[
<p>all you had to do was ask
<a href="https://youtu.be/V4vVUXNotI0" rel="nofollow">https://youtu.be/V4vVUXNotI0</a><p><3</p>
]]></description><pubDate>Wed, 25 Jul 2018 20:12:29 +0000</pubDate><link>https://news.ycombinator.com/item?id=17612374</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=17612374</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=17612374</guid></item><item><title><![CDATA[Brooklyn startup Looking Glass launches real-time holographic display]]></title><description><![CDATA[
<p>Article URL: <a href="http://lookingglassfactory.com">http://lookingglassfactory.com</a></p>
<p>Comments URL: <a href="https://news.ycombinator.com/item?id=17602220">https://news.ycombinator.com/item?id=17602220</a></p>
<p>Points: 1</p>
<p># Comments: 0</p>
]]></description><pubDate>Tue, 24 Jul 2018 15:58:13 +0000</pubDate><link>http://lookingglassfactory.com</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=17602220</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=17602220</guid></item><item><title><![CDATA[Ask HN:  putting electronics around a city]]></title><description><![CDATA[
<p>Dear Hacker News,
I'm curious about how groups have successfully installed sensor networks around a city.  Assume that money isn't the issue--you've got 1,000 sensors bought and paid for, and now you want to place them in public areas.  What's an effective way to go about this?</p>
<hr>
<p>Comments URL: <a href="https://news.ycombinator.com/item?id=5279806">https://news.ycombinator.com/item?id=5279806</a></p>
<p>Points: 3</p>
<p># Comments: 2</p>
]]></description><pubDate>Mon, 25 Feb 2013 16:40:47 +0000</pubDate><link>https://news.ycombinator.com/item?id=5279806</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=5279806</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=5279806</guid></item><item><title><![CDATA[Outsourcing as a startup]]></title><description><![CDATA[
<p>I recently read the 4-hour work week and came away a mix of excited, entertained, and annoyed at Ferriss' douchyness.  The one thing it did open my eyes to, though, was outsourcing work to India.  You can get Indian outsourcing firms to do everything from making appointments to writing grants (god forbid!) to writing code, all for unthinkably cheap rates by US standards.  What I'm curious about is if there's a place for this kind of outsourcing in a software startup.  It seems like there must be a number of simple, repetitive tasks you could offload, from profiling your users to gathering info on similar businesses.
Does anybody do this?  Has anybody tried this?</p>
<hr>
<p>Comments URL: <a href="https://news.ycombinator.com/item?id=832661">https://news.ycombinator.com/item?id=832661</a></p>
<p>Points: 3</p>
<p># Comments: 6</p>
]]></description><pubDate>Sun, 20 Sep 2009 03:23:25 +0000</pubDate><link>https://news.ycombinator.com/item?id=832661</link><dc:creator>enjrolas</dc:creator><comments>https://news.ycombinator.com/item?id=832661</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=832661</guid></item></channel></rss>