<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: khr</title><link>https://news.ycombinator.com/user?id=khr</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Wed, 10 Jun 2026 01:54:39 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=khr" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by khr in "Ask HN: What did you find out or explore today?"]]></title><description><![CDATA[
<p>I found out that the adhesives I've encountered from time to time that remain tacky and easily moved or removed are called "non-hardening" adhesives.  This was after using E8000 glue for a headphone repair today.</p>
]]></description><pubDate>Thu, 15 Jan 2026 05:07:20 +0000</pubDate><link>https://news.ycombinator.com/item?id=46628285</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=46628285</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46628285</guid></item><item><title><![CDATA[New comment by khr in "Photographing the hidden world of slime mould"]]></title><description><![CDATA[
<p>You can, depending on your definition of "useful".  You can buy a cheap laser pointer, take out its lens, and put it over your camera lens.  Tape it onto the lens for a temporary janky version or make a 3d-printed mount for something much better that you can easily take on/off.<p>I've personally found this little hack useful, but then again I don't have a DSLR and macro lens!</p>
]]></description><pubDate>Fri, 09 Jan 2026 18:02:29 +0000</pubDate><link>https://news.ycombinator.com/item?id=46556844</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=46556844</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46556844</guid></item><item><title><![CDATA[New comment by khr in "Dell admits consumers don't care about AI PCs"]]></title><description><![CDATA[
<p>Yes, on my Thinkpad I could remap it with Powertoys.  It looks like the sibling comments have had issues though.<p>For me, the Copilot key outputs the chord "Win (Left) + Shift (Left) + F23".  I remapped it to "Ctrl (Right)" and it's functioning as it should.</p>
]]></description><pubDate>Fri, 09 Jan 2026 17:41:46 +0000</pubDate><link>https://news.ycombinator.com/item?id=46556560</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=46556560</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46556560</guid></item><item><title><![CDATA[New comment by khr in "Show HN: Open-Source 8-Ch BCI Board (ESP32 and ADS1299 and OpenBCI GUI)"]]></title><description><![CDATA[
<p>Thanks for making this!  I'm very tempted to get one of these to do some ssVEP stuff.<p>Do you have plans to make a 16-channel (or 32-channel?) board in the future?  In my area of research, 32 channels tends to be the recommended minimum for studies.</p>
]]></description><pubDate>Mon, 05 Jan 2026 21:46:16 +0000</pubDate><link>https://news.ycombinator.com/item?id=46505447</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=46505447</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46505447</guid></item><item><title><![CDATA[New comment by khr in "Ask HN: Solving problems by mapping to other problems that we know how to solve"]]></title><description><![CDATA[
<p>Translating a solution from one problem domain to another is called "transfer" in cognitive science.  There's some theoretical and empirical work done on the topic of transfer (e.g. <a href="https://www.tandfonline.com/doi/full/10.1080/13546780802490186" rel="nofollow">https://www.tandfonline.com/doi/full/10.1080/135467808024901...</a>) but as far as I'm aware, there is not a mature "general theory of transfer" that can be computationally implemented.  That's still in the fictional "Glass Bead Game" territory.  However, you may want to take a look at that literature for broader picture theory on the issue.  It's closely related to the fairly vast literature on insight problem solving, which you might be interested in.</p>
]]></description><pubDate>Tue, 18 Jan 2022 08:43:07 +0000</pubDate><link>https://news.ycombinator.com/item?id=29976625</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=29976625</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=29976625</guid></item><item><title><![CDATA[New comment by khr in "Mammals dream about the world they are about to experience before they are born"]]></title><description><![CDATA[
<p>This article didn't link to the research article directly.  Here it is for those interested:<p><a href="https://science.sciencemag.org/content/373/6553/eabd0830/" rel="nofollow">https://science.sciencemag.org/content/373/6553/eabd0830/</a></p>
]]></description><pubDate>Tue, 27 Jul 2021 00:16:13 +0000</pubDate><link>https://news.ycombinator.com/item?id=27967147</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=27967147</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=27967147</guid></item><item><title><![CDATA[New comment by khr in "Plotnine: Grammar of Graphics for Python (2019)"]]></title><description><![CDATA[
<p>I found a previous HN submission very helpful:
<a href="https://evamaerey.github.io/ggplot_flipbook/ggplot_flipbook_xaringan.html#1" rel="nofollow">https://evamaerey.github.io/ggplot_flipbook/ggplot_flipbook_...</a><p>The author builds up plots step by step, showing the changes to the plot along the way.  It's really great at showing what each element contributes to the final plot.</p>
]]></description><pubDate>Thu, 28 Jan 2021 21:39:47 +0000</pubDate><link>https://news.ycombinator.com/item?id=25949687</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=25949687</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=25949687</guid></item><item><title><![CDATA[New comment by khr in "Eyes hint at hidden mental-health conditions (2019)"]]></title><description><![CDATA[
<p>Not to take away from some of these comments, but the article does not mention anything about casual observation of the eyes signalling mental health issues.  The article is highlighting research on diagnosing disorders of the brain using ophthalmological methods (e.g. optical coherence tomography to measure retinal thickness, electroretinography to measure electrical signaling in rods and cones, and angiography to assess retinal vasculature).  Apparently, these non-invasive methods may be used as an additional diagnostic tool in diagnosis of a variety of disorders, and may even be early indicators of brain disorders that have not yet manifested themselves in psychological disturbances.</p>
]]></description><pubDate>Fri, 25 Dec 2020 20:32:39 +0000</pubDate><link>https://news.ycombinator.com/item?id=25538827</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=25538827</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=25538827</guid></item><item><title><![CDATA[New comment by khr in "A Book about Aircraft Scale Drawings Creating with Inkscape and Gimp"]]></title><description><![CDATA[
<p>In that case, perhaps "A Book about Creating Aircraft Scale Drawings with Inkscape and Gimp" would be more appropriate?</p>
]]></description><pubDate>Thu, 17 Dec 2020 04:38:44 +0000</pubDate><link>https://news.ycombinator.com/item?id=25452520</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=25452520</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=25452520</guid></item><item><title><![CDATA[New comment by khr in "Abusing linear regression to make a point"]]></title><description><![CDATA[
<p>Agreed.  I was curious enough to run the model myself so I used a tool to extract the data.  The slope estimate (b=17.24) is not significantly different from zero, p=.437.<p>The data are here:
<a href="https://pastebin.com/HhWTKZRb" rel="nofollow">https://pastebin.com/HhWTKZRb</a></p>
]]></description><pubDate>Mon, 06 Jul 2020 22:06:35 +0000</pubDate><link>https://news.ycombinator.com/item?id=23753338</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=23753338</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=23753338</guid></item><item><title><![CDATA[New comment by khr in "Hyperland (1990) [video]"]]></title><description><![CDATA[
<p>I feel the same way.  I think this explanation of the transition has been mentioned on HN before:<p>1) The Internet was created.  Early adopters are generally optimistic about its potential to share knowledge and data, and form communities around mutual interests.
2) People begin to realize different ways to create money from this popular new technology, leading to very obvious attempts at creating revenue at some expense of users attention (e.g. advertising), followed by more hidden ways of revenue creation (e.g. selling data).<p>I also find it hard not to despair.  There are still online communities that are still more motivated by communicating and sharing for their own sake (HN included), which I think should be the aspiration of online communities.  Most people here have probably just settled into the online communities/blogs that serve these more optimistic goals.  The unfortunate thing is that as soon as these communities become relatively popular in any way, other motives start to come to the fore to take advantage of that popularity.  As those motives become clear, cynicism is inevitable.  It seems to me that you might need something like benevolent community leaders that want to pour their own resources (time and/or money) into online communities without expecting anything in return.<p>I guess this comment didn't really offer ways to deal with cynicism regarding technology, if anything I justified the cynicism and suggested an option to create communities that would not breed cynicism.</p>
]]></description><pubDate>Fri, 20 Mar 2020 00:21:59 +0000</pubDate><link>https://news.ycombinator.com/item?id=22633254</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=22633254</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=22633254</guid></item><item><title><![CDATA[New comment by khr in "A New York railroad uses lasers to stay on schedule"]]></title><description><![CDATA[
<p>My non-engineer guess is that a nylon brush would be shaved down pretty quickly by rail contact at typical train speeds, so that it would be ineffective at removing debris after a very short time.</p>
]]></description><pubDate>Sun, 29 Dec 2019 00:52:48 +0000</pubDate><link>https://news.ycombinator.com/item?id=21903017</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=21903017</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=21903017</guid></item><item><title><![CDATA[New comment by khr in "Speaking to yourself in the third person makes you wiser"]]></title><description><![CDATA[
<p>I haven't read the entire paper, but it's here: <a href="https://psyarxiv.com/a5fgu" rel="nofollow">https://psyarxiv.com/a5fgu</a><p>The main results are an interaction between Time (pre/post) and Diary condition (3rd person/1st person), <i>t</i> = 2.65, <i>p</i> = .008.  They followed this up with a contrast showing that the 3rd person diary condition resulted in more wise reasoning post-intervention (as compared to pre-intervention), <i>B</i> = 0.130, <i>SE</i> = 0.028, <i>t</i> = 4.61, <i>p</i> < 0.0001.  And importantly, this same improvement was not seen in the 1st person diary control group: <i>B</i> = 0.022, <i>SE</i> = 0.030, <i>t</i> = 0.74, <i>p</i> = 0.458.<p>They didn't provide degrees of freedom for their t-tests, but given their sample size (N=298) they're essentially z-tests anyway.</p>
]]></description><pubDate>Sun, 11 Aug 2019 19:39:33 +0000</pubDate><link>https://news.ycombinator.com/item?id=20669988</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=20669988</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20669988</guid></item><item><title><![CDATA[New comment by khr in "Speaking to yourself in the third person makes you wiser"]]></title><description><![CDATA[
<p>Sure, there is subjectivity in the ways researchers operationalize the concepts that they study.  That doesn't mean that their research is not "real science".  If the study is of sound design and the result is replicable, it ought to be called science.<p>Regarding the self-measurements influencing the results: the wisdom in the participants' reasoning (the dependent variable in the focal study) was evaluated by two independent hypothesis-blind raters.  This seems like a pretty solid evaluation of the participants which should be immune to anything but the manipulation the researchers employed (the diary conditions).  I am not sure what self-measurement you are concerned about.</p>
]]></description><pubDate>Sun, 11 Aug 2019 19:10:21 +0000</pubDate><link>https://news.ycombinator.com/item?id=20669819</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=20669819</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=20669819</guid></item><item><title><![CDATA[New comment by khr in "Scientists rise up against statistical significance"]]></title><description><![CDATA[
<p>A 95% confidence interval will contain the true mean 95% of the time (across an infinite number of replications of the experiment/study).  For a single confidence interval, you have either captured the mean in your confidence interval, or you've not -- there's no probability about it.</p>
]]></description><pubDate>Wed, 20 Mar 2019 22:49:21 +0000</pubDate><link>https://news.ycombinator.com/item?id=19447782</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=19447782</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=19447782</guid></item><item><title><![CDATA[New comment by khr in "Commandeering Australian citizens to become spies"]]></title><description><![CDATA[
<p>erentz was probably referring to the single transferable vote system (<a href="https://en.wikipedia.org/wiki/Single_transferable_vote" rel="nofollow">https://en.wikipedia.org/wiki/Single_transferable_vote</a>), which uses a ranked ballot in elections and results in relatively proportional representation.  CGP grey explains it pretty well: <a href="https://www.youtube.com/watch?v=l8XOZJkozfI" rel="nofollow">https://www.youtube.com/watch?v=l8XOZJkozfI</a></p>
]]></description><pubDate>Thu, 06 Dec 2018 18:17:19 +0000</pubDate><link>https://news.ycombinator.com/item?id=18620562</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=18620562</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=18620562</guid></item><item><title><![CDATA[New comment by khr in "Robert and Virginia Heinlein's Colorado Springs House"]]></title><description><![CDATA[
<p>Mirrors in skylights seems like a very obvious improvement to increase the amount of natural sunlight in a space.  It seems adaptable to north-facing top-floor suites.  Mirrors could be installed such that the sun would reflect into the suite throughout the day.  It seems to be such an obvious improvement, but I've not noticed such a system anywhere in my city.  Maybe the regular cleaning of the mirrors is enough of a deterrent for building owners to invest in something like this?</p>
]]></description><pubDate>Thu, 18 Oct 2018 20:39:43 +0000</pubDate><link>https://news.ycombinator.com/item?id=18251914</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=18251914</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=18251914</guid></item><item><title><![CDATA[Blogdown: Creating Websites with R Markdown]]></title><description><![CDATA[
<p>Article URL: <a href="https://bookdown.org/yihui/blogdown/">https://bookdown.org/yihui/blogdown/</a></p>
<p>Comments URL: <a href="https://news.ycombinator.com/item?id=18097690">https://news.ycombinator.com/item?id=18097690</a></p>
<p>Points: 3</p>
<p># Comments: 0</p>
]]></description><pubDate>Fri, 28 Sep 2018 22:51:14 +0000</pubDate><link>https://bookdown.org/yihui/blogdown/</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=18097690</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=18097690</guid></item><item><title><![CDATA[New comment by khr in "The Irreproducibility Crisis of Modern Science"]]></title><description><![CDATA[
<p>Power is also a concern that many researchers do not pay attention to (at least in psychology/neuroscience).<p>If the original study was under-powered, the estimated effect size in that study will be inflated and any replication attempt that uses this inflated effect size estimate will be severely underpowered.<p>Plus, two independently conducted studies that are both powered at 80% to detect a true effect will both be positive results only 64% of the time (assuming absolutely nothing fishy going on, e.g. p-hacking).</p>
]]></description><pubDate>Tue, 17 Apr 2018 18:26:43 +0000</pubDate><link>https://news.ycombinator.com/item?id=16860979</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=16860979</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=16860979</guid></item><item><title><![CDATA[New comment by khr in "The emotions we feel may shape what we see"]]></title><description><![CDATA[
<p>There are many ways to study attention and mood.  What I took from the press release which appears to be novel (though I've not read the original research article) is that our higher-order representations of facial emotions are able to be influenced by stimuli presented to the participant unconsciously.  Although the participant was not aware of the happy faces being presented to them, their representation of the emotion of a separate face was affected.  This is very different from the obvious "our mood influences what we attend to in the world".<p>Also highlighted in the press release is the fact that this was robust for unconsciously presented happy faces -- it is unusual for positive stimuli to have a stronger effect on most psychological measures.  This is usually due to negative stimuli causing higher levels of arousal (as far as I know, though I'd need to confirm this in the literature), so it's really due to a confounding of valence and arousal.<p>My main question from this article would be how they controlled for low-level visual properties of the stimuli presented.  The hope is that their upside-down face experiment was able to account for any possible confounding of face emotion with something like spatial frequency characteristics influencing the participant's subjective judgement of the neutral face, but there will never be a way to fully claim that it was the emotion of the face alone.  If you fully control the underlying visual properties of the stimulus, you remove the emotion!</p>
]]></description><pubDate>Wed, 11 Apr 2018 23:16:19 +0000</pubDate><link>https://news.ycombinator.com/item?id=16816667</link><dc:creator>khr</dc:creator><comments>https://news.ycombinator.com/item?id=16816667</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=16816667</guid></item></channel></rss>