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pixelperfect

351 karma · joined July 6, 2014

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pixelperfect··on Ask HN: Book which comprehensively covers probability theory?
I second the recommendation for Blitzstein's book and lectures well as the frustration that more of the questions don't have solutions. I enjoyed reading it much more then Sheldon Ross' book, although both books have good problems.
pixelperfect··on Ask HN: Has anyone managed to regain their attention span/ability to focus?
Is your attention span terrible for everything, or is there some activity or hobby where you can become immersed? If the former, you may have a physical problem, perhaps a vitamin or mineral deficiency, sleep deficiency, or ADD, if the latter, it's probably more of a motivational problem.
pixelperfect··on Facebook chooses Canada for Dating feature launch
> When my Bumble push notification comes in, I know it's someone who finds me attractive based on my honest photos and okay with something casual. It's the perfect filter for all involved.

I've never used Bumble before but my understanding is that males in the top 20% of physical attractiveness get nearly all of the requests and that males in the bottom 80% get nearly none. Does that sound accurate?

pixelperfect··on Effective learning: Twenty rules of formulating knowledge (1999)
Using a spaced repetition system for math has never worked well for me. It's useful for memorizing mathematical facts (for example, the mean/variance of various statistical distributions), but over time my intuition will fade, and I'm left parroting facts, having lost the understanding of why they are true.

In my experience, spaced repetition systems excel when I can create cards that take 10 seconds or less to answer. So they work really well for something like language learning. But it's difficult to reduce mathematical arguments into 10 second chunks.

pixelperfect··on Clojure at Netflix (2013) [slides]
Clojure is still around and a great language for experienced devs. But the experience for newcomers is much less attractive than for other languages, which is preventing growth. Also, the largest Clojure community is the Slack channel, which is hidden from the rest of the world.
pixelperfect··on Working at Netflix Sounds Like Hell
"the US needs more programmers and STEM grads" can always mean "we wish we could hire programmers for $45,000 a year, but due to supply and demand we have to pay them more than that"
pixelperfect··on Acquiring absolute pitch in adulthood is difficult but possible
I've heard anecdotal reports that absolute pitch training kind of works as an adult, but not as well. If you practice enough you can start to identify notes correctly, but if you don't keep up with training, the ability goes away.
pixelperfect··on What does the future of software engineering hold for engineer not into ML/AI?
AI won't be able to replace most engineers until general AI is on the horizon, probably a long time from now
pixelperfect··on Ask HN: How do I learn modern JavaScript?
javascript.info is a good comprehensive resource for learning modern JS
pixelperfect··on Skripal Suspect Boshirov Identified as GRU Colonel Anatoliy Chepiga
Especially when they grew up in a tiny town with population 300 before attending a nearby military academy. This guy's background was very obscure.
pixelperfect··on Skripal Suspect Boshirov Identified as GRU Colonel Anatoliy Chepiga
I found it surprising RT aired that interview. The suspects acted extremely evasive and had a very weak cover story. The host also seemed dubious. There was one part where she said, "you all are sweating, let me turn on the AC," and another part where she said, "people won't believe you if you don't provide more information about your background." If their goal was to convince viewers that the suspects were innocent, they failed miserably.
pixelperfect··on Ask HN: Does anyone actually use Keybase?
Right now I use it for encrypted file storage and private git repositories that I don't want anyone looking at. I don't have 100% trust in the security of the platform, but I prefer it to Dropbox or Google Drive where the probability of someone snooping around my files seems higher.
pixelperfect··on Ask HN: Favorite teachers on YouTube?
Pavel Grinfeld (MathTheBeautiful) has a wonderful Linear Algebra course that is imo underwatched. He also has courses on Vector Calculus and Tensor Calculus. [1]

Sandy Bultena has a great series on Euclid's elements with beautiful visualizations made from software she wrote [2]

For learning Mandarin Chinese, Mandarin Corner is my favorite channel. [3]

[1] https://www.youtube.com/channel/UCr22xikWUK2yUW4YxOKXclQ

[2] https://www.youtube.com/channel/UCnHh6XeLupJ5FHSKDh9eIMw/pla...

[3] https://www.youtube.com/channel/UC2fAiRQHRQT9aj9P_ijYeow

pixelperfect··on Preventing Muscle Loss as We Age
There is a lot of evidence that cognitive decline is greater in people with insulin resistance. Eating a relatively low sugar/carb diet that doesn't cause blood sugar to spike is probably a good idea.
pixelperfect··on Feynman's Lost Lecture (ft. 3Blue1Brown) [video]
His videos on linear algebra are excellent, but they are not a complete resource. If you want a comprehensive resource, search for the LA course by "maththebeautiful" on YouTube. Also check out Gilbert Strang's MIT lectures.
pixelperfect··on Show HN: Select Star SQL, an interactive SQL book
I learned SQL mostly by using your site, thank you for making it!
pixelperfect··on Russia tries more precise technology to block Telegram messenger
> I am Russian and I like this escalation because it makes more people to hate Putin making overthrow of his regime more likely.

Is there any chance of that happening? I am not Russian but my impression is that a large majority of Russians favor Putin and it's hard to imagine how he could be overthrown.

pixelperfect··on Tesla stock sinks after Musk gives tearful NYT interview
To me he looks sleep deprived in this interview.
pixelperfect··on Nearly Half of Americans Are Lonely
Most women would not consider such an ordinary social interaction to be harassment, but suppose a small fraction do - being perceived or accused of harassment is such a negative thing that it can be a strong deterrent even if there's a low chance of it actually happening.
pixelperfect··on There Is No Such Thing as Unconscious Thought
The arguments in this article were unconvincing. It's not surprising that naming foods and countries together is no easier than naming them separately. These are two similar, focused tasks. There is no time for the unconscious to do any work amidst this focus. The unconscious mind requires a more diffuse state, which is best attained by walking in the park, taking a shower, or something like that.
pixelperfect··on Ask HN: Any good examples of learning through games/puzzles, for adults?
LeetCode
pixelperfect··on Ask HN: Is anyone studying for technical interviews?
I signed up for an account there months ago, got a message about it being in "closed beta" and have heard nothing since.
pixelperfect··on My struggle to learn React
I've also struggled to learn React, but for me it's because I learned ClojureScript/Reagent/re-frame first. I get demotivated because I vastly prefer those tools, but unfortunately there are many more job opportunities for JS/React than CLJS.
pixelperfect··on Ask HN: Is Keybase a reasonable solution for storing private keys/recovery words
One threat with Keybase is that an adversary can wipe all data on your account if they just have access to your email (see https://keybase.io/#account-reset).

I haven't looked into it in detail but Tarsnap might be preferable.

pixelperfect··on Chinese Tech Companies’ Dirty Secret [video]
> TL;DR - We respect all cultures and viewpoints, except all those which we judge wrong and sexist.

I see nothing wrong with accepting this statement, assuming "wrong" and "sexist" are defined correctly.

pixelperfect··on The Programming Talent Myth (2015)
Does anyone else disagree with this article? There is talent for programming, and that talent is correlated with IQ. A person with average or below average IQ is very unlikely to excel as a programmer. There is a lot of academic literature to back this up.
pixelperfect··on CS109: Ethical Foundations of Computer Science
I took a similar class to this at UT in 2010, and at that time Sarah Abraham was the TA. It was a pretty memorable/enjoyable class. The homework often involved sharing news stories regarding CS ethics. One day I shared an article about Google's new self-driving car program, which was met with skepticism because the results seemed so much dramatically better than everything before :)
pixelperfect··on The Religious Experience of Philip K. Dick by R. Crumb
I think this sort of "divine light" experience happens to a lot of people. In the Burmese school of Buddhism started by Mahasi Sayadaw, there is a stage of insight called the "Arising and Passing Away" that teachers identify when their students report phenomena like this. If you go to a Buddhist internet community like dharmaoverground.org, you will find a lot of people reporting and discussing this sort of thing.

Although I no longer consider myself Buddhist, I don't know what to make of it.

pixelperfect··on How to learn Deep Learning in 6 months
My impression is that a lot of programmers have already followed a similar path, would like to find a job doing ML, but haven't found a way to make it happen. Does that sound correct? I'm not saying the effort isn't worth it anyway.
pixelperfect··on Apple Music on Track to Overtake Spotify in U.S. Subscribers
Palantir
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