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pixelperfect

351 karma · joined July 6, 2014

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pixelperfect··on Hiring Developers: look for the ability to abstract and not for experience
> Ideally all our interview problems should be built in a way that even a non-technical person with highly developed abstract thinking could answer.

This technology is more than a century old and is called an "IQ test."

But giving IQ tests is legally dicey, so SV companies use algorithmic challenges instead.

pixelperfect··on With teen mental health deteriorating over five years, there’s a likely culprit
When I was around that age I also had my PC taken away from me. My recommendation would be to see if you can kickstart some hobby by spending a few hundred dollars on something as a substitute for the PC. Something of his choice than is more constructive than video games. When my PC was taken away and not replaced with anything, I just got bored and didn't know what to do with my time.
pixelperfect··on Ad campaign runs cryptocurrency miners while unwitting users watch videos
Funny idea: a long form journalism site could intentionally and openly embed such a script, allowing readers to make "micropayments" of lent CPU time to the site while they read articles.
pixelperfect··on How to Study: A Brief Guide
I've been using org-mode with Deft for a few months now and love it. I'm slowly building a personal Wiki filled with knowledge that is rapidly searchable and has no risk of becoming obsolete (unlike say Evernote where you are at the mercy of the service).
pixelperfect··on The Impact of Listening to Music on Cognitive Performance (2013)
I have listened to rainymood.com over 1000 hours and am 100% sure I perform better while listening to it vs. not listening to anything. However, pop music would be much more distracting than silence for me.
pixelperfect··on Why Am I So Lazy?
I like that quote. It reminds me of this video: https://www.youtube.com/watch?v=yL9UJVtgPZY
pixelperfect··on A History of Computation, Logic and Algebra, Part I
I really enjoyed reading this, thanks for sharing. I like the emphasis on primary sources, which I tend not to read enough of.
pixelperfect··on Why Raspberry Pi Isn't Vulnerable to Spectre or Meltdown
Isn't the knowledge of potential for timing attacks using cache/memory fairly old? I am pretty sure I heard of the concept long ago.
pixelperfect··on Productivity in 2017: analyzing 225 million hours of work time
I reached the same conclusion for myself - that a ~40 minute cardio workout actually results in less productivity rather than more.

However, I switched to a 10 minute cycling workout with high intensity intervals (4-5 intervals 30 seconds in length). I have only done this for a few weeks, but I find that it boosts daily energy rather than depleting it.

pixelperfect··on Statistic of the Year 2017: Winners announced
Number of deaths caused by Islamic extremist terror attacks is a fat-tailed distribution, while deaths caused by lawn mowers is not. There is no organized movement among lawnmowers to rise up and kill people - the deaths happen by accident, and the odds of deaths increasing 1000% one year are very, very low. The same logic does not hold for terrorist attacks. There is no reason to assume an attack on the scale of 9/11 or greater will never occur again. These low-probability but highly significant events are not being factored in by Kim Kardashian West, and a lot of people are not thoughtful enough to consider them on their own.
pixelperfect··on In Japan, small children take the subway and run errands alone (2015)
Are abductions rare because they almost never happen in the first place, or because Americans take extreme measures to avoid them?
pixelperfect··on A good resource for financial advice to share with people in their twenties?
He does a breakdown of his household spending each year and it's around $30,000. His house had been paid for in full and he had ~$800,000 invested at the time of retirement. The math works out without income from blogging and handiwork.
pixelperfect··on Ask HN: Books on specific topics that have applied to many areas of your life?
I have not read the book "Nonviolent Communication," but anecdotally, the several people I know who have mentioned reading this book tend to speak in an abnormally passive aggressive, condescending, and overbearing way. I am curious if this is just a fluke or if others have had the same experience.
pixelperfect··on Parity Wallet security alert
A few months ago as a newcomer to Ethereum, I looked into Solidity and concluded that due to the poor design of the language, large-scale problems like this would be inevitable. I decided not to invest in ETH. In my opinion, smart contracts are a good idea, but smart contracts written in Solidity are a bad idea.
pixelperfect··on Ask HN: Best resources for learning JavaScript in 2017
http://javascript.info/ is an excellent, up-to-date, comprehensive resource for learning JS.

I also really liked getify's course on Frontend Masters, "Deep JavaScript Fundamentals," as well as his book series You Don't Know JS (though it's a bit much for a beginner).

pixelperfect··on Why Equifax’s error wasn’t hiring someone with a music degree
I haven't looked into the Equifax hack, but plenty of highly competent programmers have music degrees. Rich Hickey for example. (source: https://gist.github.com/harfangk/f98e627f7567b7b5741fe0c239b...)
pixelperfect··on Tech entrepreneurs’ politics: Liberal, with one big exception
Biggest surprise of the article for me: only 36% of Democrats and 41% of Republicans believe "florists raising prices on holidays is fair."
pixelperfect··on Reddit raises $200M at a $1.8B valuation
I agree. I've heard people say, "I don't understand why you use Reddit. I visited the front page and it is total garbage." But I've never heard anyone say the same thing about YouTube, even though its front page is just as bad.
pixelperfect··on Introverts, Emotional Processing, Self-Esteem and Salary Negotiations
People do care about these things if you are a well-known public figure. I think the constant scrutinizing over the conduct of public figures misleads people into believing that their own actions are being scrutinized in the same way.
pixelperfect··on Ask HN: Books you wish you had read earlier?
I remember telling my parents this was my favorite book when I was 10. I'm currently reading the Chinese translation since it matches my current Chinese reading level, and it's been quite enjoyable, even though a lot of English-specific word play is lost in translation.
pixelperfect··on Extracting Chinese Hard Subs from a Video, Part 1
Thanks for this! I'm looking forward to part 2 also.

A bit off-topic, but does anyone have Chinese TV show suggestions? I watched a few episodes of this show (他来了) already, but I didn't like it very much.

pixelperfect··on Ask HN: What's the best way to relearn math?
Here are some excellent YouTube playlists for the subjects you mentioned. I have used and can vouch for the high quality of all of them:

Linear Algebra: https://www.youtube.com/playlist?list=PLlXfTHzgMRUKXD88IdzS1...

Probability: https://www.youtube.com/watch?v=KbB0FjPg0mw&list=PL2SOU6wwxB...

Calculus: https://www.youtube.com/user/professorleonard57/playlists

Be sure to work through problems and not just watch lectures, because otherwise you'll forget the content. For example, the linear algebra course has a companion site with problems, and the professor of the probability course wrote an excellent book with problems.

pixelperfect··on Coding the Matrix: Linear Algebra Through Computer Science Applications
That series motivated me to learn Linear Algebra when I watched it 8 months ago. After watching those, I started this course: https://www.youtube.com/channel/UCr22xikWUK2yUW4YxOKXclQ/pla...

In my opinion, the latter is one of the best math courses available on YouTube, and definitely deserves more views.

pixelperfect··on $10 Showdown: Linode vs. Digital Ocean vs. Amazon Lightsail
I am sticking with Digital Ocean over Lightsail because I don't like potential financial liability. I like being able to not think about my vps for months and knowing there is a maximum amount I will be charged.
pixelperfect··on A practical guide for learning meditation through the art of gaming
Interesting to see a reference to Culadasa on HN. I discovered his site in 2013 and listened to almost his entire podcast archive. For more than a year I meditated 1+ hours every day, but ultimately I didn't make much progress according to the 10 stages model he has laid out. I ended up getting skeptical/discouraged and stopped meditating regularly. How about you?
pixelperfect··on Taking a stand against unofficial Ubuntu images
Yes, I read OVH does this. Though I don't understand, for what reasons are they doing it?
pixelperfect··on Datomic Update: Client API, Unlimited Peers, Enterprise Edition, and More
I think you are talking about the"Datomic Free" option which is still available: http://www.datomic.com/get-datomic.html
pixelperfect··on Datomic Update: Client API, Unlimited Peers, Enterprise Edition, and More
For anyone curious about Datomic this site has an excellent interactive tutorial for learning how to query: http://www.learndatalogtoday.org/
pixelperfect··on Facebook Does Not Use Your Phone’s Microphone for Ads or News Feed Stories
Any of them from the past few decades. Obama's administration has made secret courts and laws more common than ever before while prosecuting a record number of whistleblowers.
pixelperfect··on Caffeine use disorder
I had the same result after switching to a keto diet 10 months ago. Do you know if there are any research papers on this? I was really surprised how effective the change in diet was because I did it on a whim without receiving medical advice.
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