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dacohenii

350 karma · joined April 27, 2015

[ my public key: https://keybase.io/dacohenii; my proof: https://keybase.io/dacohenii/sigs/i6zMH-QOY_SM6M4bitRKgix-o_sKKhMh7dorCBfloDc ]
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dacohenii··on Cat Colors
This is only tangentially related, but Veritasium has a fantastic video that discusses the genetics behind the random color patterns of calico cats: https://www.youtube.com/watch?v=BD6h-wDj7bw
dacohenii··on TurboTax Hides Its Free File Page from Search Engines
There's a good Planet Money episode about this, in case you like podcasts: https://www.npr.org/sections/money/2017/03/22/521132960/epis...
dacohenii··on The Knot Book: Introduction to the Mathematical Theory of Knots (1994) [pdf]
Those are really cool!
dacohenii··on Ask HN: What did you learn the hard way?
1. Shopping. Especially big ticket items like cars and places to live. Urgency favors the buyer because you don't do diligence well and you don't shop around for better deals when you're in a rush.

I assume you mean urgency favors the seller (unless you're urgently trying to sell, of course).

Or, in general: (s)he who has the greater time constraint has the disadvantage.

dacohenii··on Ask HN: High quality investing discussion board?
Not really a similar dynamic to HN, but I highly recommend http://bogleheads.org/ - especially recommend their wiki.
dacohenii··on Show HN: SpeechBoard – Edit Podcasts from the Transcript
This reminds me of a recent Radiolab episode [0] in which they discuss a new technology that would allow you not only to remove words from audio, but also to add new ones in the speaker's voice -- and likeness, in the case of video. They made an example video [1], which was not super-convincing, but a very good demonstration of what it may be able to do in the future.

Of course, the focal point of the episode isn't the technology itself, but the implication it could have on society once it gets good enough that its output is virtually indistinguishable from real video (i.e. fake news in the form of convincing-looking videos).

Highly recommended if you have the time.

[0] https://www.radiolab.org/story/breaking-news/ [1] https://www.futureoffakenews.com/

dacohenii··on Ask HN: What tech that's right around the corner are you most excited about?
> We'll be deciding that for future generations.

I think this is only true for genetic modifications to germ cells or embryos, which is why the recent embryonic gene editing story [1] is so controversial.

As far as I know, gene editing in somatic cells only affects the individual and not their offspring, unless that change somehow propagated itself to the genetic material in the gametes.

(Disclaimer: this is in my field of interest but way outside of my field of expertise)

[1] https://www.scientificamerican.com/article/embryo-gene-editi...

dacohenii··on An Ikea Bowl Has Been Setting Things on Fire
They tried and failed three times (episodes 16, 46, and 157).

Here's an interesting write-up about the team of MIT students that worked with them on the second try: http://web.mit.edu/2.009/www/experiments/deathray/10_Mythbus...

dacohenii··on Chrome 59 with TurboFan is Sometimes Slower than 58
Here's an interesting talk about optimization and JIT compilation in V8: https://www.youtube.com/watch?v=p-iiEDtpy6I
dacohenii··on You can learn anything
HN thread with more discussion (linked to the github repo this project): https://news.ycombinator.com/item?id=14314045
dacohenii··on Hardly-used SQL Server functions that should be used more often
I used STUFF all the time until I found and implementation [https://groupconcat.codeplex.com/] of MySQL's GROUP_CONCAT as a SQLCLR function (well, actually they had to create multiple variants to allow sorting and custom delimiters).

It's certainly more ergonomic than STUFF, and I've found its performance to be comparable or better.

dacohenii··on Brain training exercises might just make you better at brain training exercises
Richard Feynman. Here's a video about who he is: https://www.youtube.com/watch?v=JIJw3OLB9sI

And the wiki article: https://en.wikipedia.org/wiki/Richard_Feynman

There are lots of videos of his lectures and interviews on youtube. You should check 'em out.

dacohenii··on Opposition to Galileo was scientific, not just religious
Exactly. From a geocentric perspective, it's not wrong as long as you're explaining past events (which, as you noted, can be done by adding epicycles).

The reason the model is not so useful (to paraphrase my college physics professor) is that you can't use it to predict things in advance with reasonable certainty (i.e. you don't know what epicycles you need until after you've observed it).

dacohenii··on Sensorwake: Olfactory Alarm Clock
That happened to me after using one of those automatic coffee makers for several months. Then again, maybe there's more to it than Pavlov might suggest.
dacohenii··on Make Dope Beats with ReactJS
maybe this version could be called "JSX Gon' Give It To Ya"
dacohenii··on Your Phone Has an FM Chip. So Why Can’t You Listen to the Radio?
Not the case (in the US) for all frequencies; 88.1 MHz - 90.9 MHz is reserved for noncommercial educational radio stations. (This is where you'll find NPR, college radio, etc.)

See here for more details: https://www.fcc.gov/media/radio/how-to-apply#NCE

dacohenii··on LimeSDR funded, some hours left to still get a discounted SDR
Here's a page with radios that work for sure: http://www.rtl-sdr.com/buy-rtl-sdr-dvb-t-dongles/

By the way, these are receivers. If you want to transmit using SDR, the hardware is going to be a bit more expensive.

dacohenii··on HAMNET — A large scale high speed radio network [pdf]
I was surprised to hear this -- my understanding was that encryption was illegal in all cases (at least in the US). A quick googling found this, which sheds a good bit of light on the matter: http://www.amateurradio.com/encryption-is-already-legal-its-...
dacohenii··on HAMNET — A large scale high speed radio network [pdf]
Agreed. It's infeasible to (legally) connect this type of system to the internet, at least in the US. FCC Part 97 also prohibits commercial transmissions, which would conceivably include advertisements, so you couldn't use this page to view any web page that contains ads. There goes most of the internet.

That said, I don't think this was ever intended to connect directly to the internet in this manner.

dacohenii··on Something’s cooking in Apple’s India business
I knew I went to the comments first for a reason.
dacohenii··on This Is Your Brain on Podcasts
I listen to a lot of the popular ones that have already been mentioned (Serial, Radiolab, This American Life, etc), but here are some others I listen to:

- Freakonomics Radio (WNYC). Favorite episode so far: "The Economics of Sleep" [1] - 60 Second Science (Scientific American). Short synopses of new science. - Developer Tea (spec.fm). Targeted towards developers, and episodes generally revolve around tech work and/or career development. Generally around 20 minutes. Good place to start: Interview w/ Sam Lambert, Director of Systems at GitHub [2] - StarTalk Radio (American Museum of Natural History, I guess). Astronomy/Science. I'm especially a fan of the "Cosmic Queries" episodes. - Reply All (Gimlet Media). Tech related, but no specific target audience. 30ish minutes. Favorite episode so far: #53, "In the Desert" [3] - Planet Money (NPR). Economics. Lots of good stuff. - Stuff You Should Know (How Stuff Works). Usually informative, but generally conversational and not heavily edited. - Gastropod (Radiotopia). Food. Also generally conversational with little editing. - Codebreaker, by Marketplace and Tech Insider (NPR). Tech/Ethics.

[1]: http://freakonomics.com/podcast/the-economics-of-sleep-part-... [2]: http://spec.fm/podcasts/developer-tea/30505 [3]: https://gimletmedia.com/episode/53-in-the-desert/

Edit: spelling

dacohenii··on -2000 Lines of Code
I live in an area of the US where the cost of living is low (think $1.60/gallon and $725/month to rent a 2-bedroom apartment).

If I'm interviewing for a potential employer in an area with a higher cost-of-living, I'd (in a certain sense) be cheating myself to state my current pay.

dacohenii··on Negative Impact of English on Math Learning
Malcolm Gladwell talks about this in his book Outliers, which may be a better explanation for you.

Here is an excerpt from that section: http://gladwell.com/outliers/rice-paddies-and-math-tests/

dacohenii··on Elephants Shot with Poison Arrows Travel to Humans for Help
Radiolab has a new episode about this called "Rhino Hunter" about this type of thing: (show and description here: http://www.radiolab.org/story/rhino-hunter/)

It talks about how hunting is used as a funding mechanism for conservation, and in general the ethics of whether (and how) killing an individual could benefit the species as a whole.

If you have 50 or so minutes to spare, I highly recommend it.

dacohenii··on Ask HN: Facebook clickjacking – is it detectable?
I once heard of an instance where the link redirected to a legit website for requests coming from Facebook's IP, and to a scam-type website from all other IPs.
dacohenii··on What's new – Last.fm
That's a good way to publicize both the upgrades and the downtime without pissing off customers. Lots of companies don't quite do that. Kudos, Last.FM.
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