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rococode

6,467 karma · joined September 7, 2017

academia -> startups -> big tech -> non-tech startups :)

pls enjoy this carefully curated selection of emojis not filtered by HN

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contact: HN username plus an r at the end. At the google thing.

(disclaimer: response times vary from quickly to never, it's not my main email sorry...)

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rococode··on Duck Chess
g2 is defended by black's knight, so after Kxg2, black captures the king and wins with Nxg2.
rococode··on Coinbase Q1/22 Shareholder Letter [pdf]
Here's a reference point on their salaries for anyone curious: https://www.levels.fyi/company/Coinbase/salaries/Software-En...
rococode··on Jump Trading sues 79-year-old Carl Sagan fan over wormhole.com domain
Here are some links listing recent domain sales:

https://enaming.com/recent-sales

https://www.dnjournal.com/ytd-sales-charts.htm

https://www.namecheap.com/blog/top-domain-sales-of-2021-so-f...

Wormhole is a cool sci-fi word. A fun word that most people know and don't already associate with another brand. It's high tech, it's something at the frontiers of science, it's fast and futuristic. Easy to spell, easy to remember, and easy to build a new brand around.

"Galaxy.com" recently went for $1.8m, apparently, and that's like a better version of "wormhole".

Comparing to recent sales, I'd say Wormhole could easily go for $800k+. With the right buyer, maybe upwards of $1m.

rococode··on Apple unveils the best photos from the Shot on iPhone Macro Challenge
I'm no expert but I think these shots often use slower shutter speeds, for example 0.5s instead of 0.01s. This increases the amount of light, but any movement that happens while the shutter is open will cause blur. Movement causes blur at fast shutter speeds too, but it's less noticeable because obviously you can move much less in 0.01s than you can in 0.5s.
rococode··on TikTok is scary good. It's digital crack
It really does seem like a lot of the magic here is simply the format. The video lengths are a perfect balance between short enough to be addictive, and long enough to enable content more varied and interesting than just short gags.

Instagram and Facebook get bland real quick. Youtube/Netflix videos are often too long to be really addictive - "just one more" isn't as persuasive if "one more" takes 10 min+. With shorter skits like Key & Peele on Youtube you do get a stronger sense of that addictiveness. Twitter is mostly text and much less expressive, and even influencers treat it mostly as a communication/announcement platform, not a content platform.

Vine was hugely popular when it was shut down by Twitter, and I think it'll go down in history as one of the largest corporate mistakes every made. They were so close on the format - they just needed to allow slightly longer videos (which they did with Twitter message lengths around they same time they shut down Vine!!!).

I'm sure Bytedance's secret recommendation sauce is good, but I think much of their success is simply thanks to them being the first competent executor of the next major social media content format.

rococode··on Ask HN: What do you use as your go-to source of world news?
Wikpedia's current events page is quite nice:

https://en.wikipedia.org/wiki/Portal:Current_events

rococode··on Ask HN: Alternative ways to move a dog, human, and some baggage overseas?
> I can spend a fair amount of money on this.

A charter flight would be your best bet. NYC to Paris will run you about $60-70k, that can accomodate about a dozen passengers so the cost goes down dramatically if you can find some people to share the flight (and the cost). Take a train to your final destination. If you bring friends or family with you, they can help with the luggage at this point. Bring as many pets or suitcases as you like - just inform the airline in advance. It'll be a very memorable experience too!

Many airlines allow small-medium pets on board, but unfortunately at 23kg (= 50 lbs) your dog is likely too big for that.

rococode··on Amazon moves employees out of downtown Seattle office due to crime
From my experience, people in Seattle tend not to report minor crimes because the police have no ability to do anything about it.

If a homeless person pushes you or spits at you, what are you realistically going to do? Call the police, wait 15-30 minutes for them to show up, and hope they can find a guy who's long gone? And even when they do bother to catch the person, the prosecutors in Seattle have a track record of dropping misdemeanor cases. It just seems like a waste of time, so you end up writing it off as an unlucky experience and moving on with your day.

Other cities may be more violent on paper, but perhaps that's because they have smaller homeless populations and their crimes are perpetrated by people who can be reliably located and prosecuted.

rococode··on Ask HN: Which are the best computer science MOOCs?
The videos require a login, but if you go to the modules page there are slides available for nearly everything (all the pdf/html links)

https://stanford-cs221.github.io/autumn2021/modules/

rococode··on Ask HN: Which are the best computer science MOOCs?
If you don't mind missing the "M" part of MOOCs, you can learn a lot from university courses. Most of the top CS schools have slides and homeworks on their course websites.

For example, if you want to learn...

Artificial Intelligence (Stanford): https://stanford-cs221.github.io/autumn2021/

Programming Languages (UW): https://sites.google.com/cs.washington.edu/cse341spring2021/...

Distributed Systems (MIT): http://nil.csail.mit.edu/6.824/2021/schedule.html

These courses have all been through the test of time and are specifically designed to provide an in-depth education with material written by some of the best and brightest educators in the field.

You can simply follow along with the material at your own pace. Occasionally you'll come across something that you can't do (e.g. part of the assignment requires running tests on the school's private cluster), but most of the homeworks you can implement on your own. The only downside is there's nowhere to ask questions if you really get stuck (don't go contacting the course staff...), but with unlimited time you can usually figure it out eventually.

rococode··on I am the healthiest person I know, and I got cancer
From what I can tell as a non-medical professional, some of the most concerning warning signs are:

- Sudden weight loss (>10-15 pounds without a change in exercise or diet)

- Any kind of recurring pain, especially headaches

- Your poop is messed up

- Blood anywhere - coughing up blood, nosebleeds when you don't usually have them, blood in your poop or urine

- Mood or behavior changes (helpful if you have someone close to you who may notice this)

- Feeling fatigued even when well-rested

- Swelling or lumps anywhere

- Trouble sleeping

Which is a lot of stuff, but fortunately can be summed up as "If you feel consistently worse than you usually do, go see a doctor".

The key is to make your judgement of "I am indeed feeling consistently worse" within a couple of weeks, not a few months or even years while hoping it'll get better on its own. It's harder than it sounds - life is always busy and it's easy to tell yourself that your discomfort is mild and you can hold out a little longer. I waited too long to act on some bad heartburn and my few months of delay were rewarded with permanent damage to my lower esophagus...

rococode··on Ask HN: Green Card as a founder/CEO/CTO of early stage startup
Here's his profile: https://news.ycombinator.com/submitted?id=proberts
rococode··on Ask HN: Anyone here have good material for learning how to sketch from scratch?
Charles Bargue's Drawing Course ("cours de dessin" - it's a book) is a classic from the 1800s. It's also in the public domain!

https://archive.org/details/C.BargueDrawingCourse/page/n23/m...

The idea is to slowly progress through the book by copying each plate accurately (the sizes are scaled down in book form, so zoom in!). I found it very effective for practicing lines, tones, and form. It's nice to pick up fundamentals first before delving deeper into a specific style.

And the #1 most important thing is to just draw as much as you can. There are tons of before-and-afters on social media where people with awful beginner drawings have shown that they can improve to become very good artists by simply practicing a lot. Much of drawing is raw mechanical precision - and it can and must be trained like any other physical skill.

rococode··on Indian teen chess grandmaster beats Magnus Carlsen in online rapid tournament
Case in point: Last year, 18-year-old Andrey Esipenko beat Carlsen in classical time controls. It was Carlsen's first classical loss against a teenager in 10 years, and his first loss to a sub-2700 player in 5 years. It was also just 3 months after Carlsen's record-breaking streak of 125 classical games with no losses came to an end.

There was a big buzz in the chess world at the time, but it was hardly front-page material for mainstream media.

That said, of course, newsworthiness is not a competition - so congrats to both youngsters for their awesome achievements. The upcoming chess generation is looking promising! (I expect we'll see similar headlines for Alireza Firouzja someday soon)

rococode··on Ask HN: How Is Your Neck?
OSHA recommends having the top of your monitor at or below eye level. I used to do the opposite - I figured having a higher monitor would force me to look up which would keep my neck straighter, but it seems that it's actually better to keep your head looking a bit downwards - perhaps it's a more natural and relaxing position for your neck? In any case, lowering my monitor did seem to reduce my neck pain.

I also got a split keyboard which I think helped me improve my posture by allowing me to sit back more comfortably with my arms apart. I got a Dygma Raise but there are plenty of options and they're probably all fine.

Exercise also seems to help, especially shoulder/back exercise.

https://www.osha.gov/etools/computer-workstations/components...

rococode··on UK.gov to make adults give credit card details for access to Facebook or TikTok
Mullvad seems to be the most popular recommendation on HN nowadays. A couple recent threads:

https://news.ycombinator.com/item?id=28551960

https://news.ycombinator.com/item?id=29903695

I've been using them for a while, very happy with it so far. Stable connection and high speeds - good enough that I often forget I have it on - and a nice selection of locations.

They even accept cash! Each account is just an ID so you can mail your account number and some money to them and payment will be processed.

Mozilla VPN also uses Mullvad's servers behind the scenes.

rococode··on Feds arrest couple, seize $3.6B in hacked Bitcoin funds
Makes you wonder if he left because he realized he could hack $70m in Bitcoin, or he hacked $70m in Bitcoin because he had left and had nothing else to do (the hack happened in August and he left in May).
rococode··on Frank Rosenblatt's perceptron paved the way for AI 60 years too soon (2019)
Data and compute power in the 70s probably would've limited the usefulness and led people to try other things (perhaps not even "probably" - that could be what really happened), though maybe it could've been revisited with success by the late 90s.

Makes you wonder if there are other abandoned techniques that might be worth circling back to nowadays...

rococode··on Ask HN: What do you use to power search for a static site?
There's also Elasticlunr which is based off of lunr.js and is what mdBook uses

http://elasticlunr.com/

rococode··on Myopia treatment 'smart glasses' from Japan to be sold in Asia
I'm -6 and the risk of complications is what makes me think I'll probably never want to do any corrective procedure. I had been considering it for a while, but one time when I went in for a checkup, I happened to chat with another guy there who was seeing the doctor because his surgery was making him see halos. Apparently they usually go away eventually, but I decided I'd rather not find that out personally.

And I feel there's a kind of meditative calmness to the blurriness that I think I might miss. It's quite nice when I'm going to bed or waking up and everything is just a blur, no distractions to catch my eye because I can't see them! I'm probably doomed if I'm ever in an apocalypse and lose my glasses, though (see Twilight Zone "Time Enough at Last").

rococode··on Ask HN: How do I turn a B2C SaaS product into a self-hosted enterprise product?
Thank you! This is exactly the sort of info I was looking for. I really appreciate it!
rococode··on Ask HN: Have you tried copying successful business to another language/country?
Rocket Internet may interest you, if you haven't already heard of them.

https://en.wikipedia.org/wiki/Rocket_Internet

They've had great success doing pretty much what you're describing.

rococode··on Meta Unveils New AI Supercomputer
I think the academic side will start shifting towards research on efficiency and speed while companies will continue to push the cutting edge.

In the NLP space there's been a lot of work recently around reducing model sizes, since they've started to reach the point where model weights sometimes don't fit in the memory of most GPUs.

There's also projects like MarianNMT which completely abandon Python and write heavily optimized models with fast languages that can run quickly and accurately even without GPUs. I think we'll see a lot more of this, though of course there's a pretty big barrier in the sheer rarity of being good at both deep learning research and writing optimized low-level code.

rococode··on Meta Unveils New AI Supercomputer
I think there are plenty of possibilities:

- 3d worlds with style transfer on the textures, like maybe there's a cafe with the visual style of Starry Night or something

- NPCs with conversation models that are finetuned for each NPC's personality and saves some history for each person it talks to for continuity

- Game-playing AI on NPCs that make them go around doing actual things or playing minigames with players

- The usual user tracking models, figuring out what people like to do in the metaverse and giving them more of that

- All the lower-level stuff that AI can do better - user inputs, rendering, etc.

Whether or not they can pull it off is a separate question - I think the tech is close but not quite there yet - but there's no doubt that the metaverse concept of "an expansive virtual world with lots of fun things to do" has many ways to use huge amounts of computation.

rococode··on Ask HN: What are some worthy non-cryto uses of excess home compute nowadays?
Lichess has a distributed network for analyzing chess games with Stockfish:

https://lichess.org/get-fishnet

https://github.com/niklasf/fishnet

There's also the Mersenne prime search which passed some milestones recently:

https://en.wikipedia.org/wiki/Great_Internet_Mersenne_Prime_...

rococode··on Drones used by farmers could be spying
Wow, off topic but why do the Dutch own so much farmland in America!? That's an unexpected one...

--

Ok, I searched around for a few minutes and this was the best answer I could find:

> Stephen Raes, economic minister for the Netherlands embassy in Washington, D.C., explained in an article in USA Today that the Dutch nationalized pension system is about 130 percent the size of that nation’s gross domestic product, thus making it the world’s largest relative to the size of its economy. That pension plan favors conservative investments, such as American farmland, he said, adding that historically Dutch immigrants to the U.S. became Midwest farmers all throughout the 19th century.

And apparently, they also own a fair amount of wind energy farms in the US.

rococode··on Tell HN: I knew I was headed for a heart attack
I wish there were some kind of master list of things to look out for with regards to health. I know generally "if you suddenly feel consistently worse than before, that's bad", but more specific advice - like what your doctor said about suddenly worsening stamina - would be nice.

It feels like all too often we hear of people getting diagnosed with a few months to live out of the blue... perhaps it's just my inner hypochondriac, but I can't help but worry about my own health every time I read one of those headlines, and wonder if there were really no warning signs or if they were simply ignored out of innocent ignorance/negligence. A mild headache, a dull numbness, suddenly getting winded, how often are serious warning signs ignored until it's too late because of their deceptive mildness making people think "it'll probably go away"? Anyways, congratulations to you on catching something before it happened!

rococode··on Ask HN: Why isn't there a simple, seemless Windows screen recording app?
ShareX can do this.

It lets you select a region + record with one hotkey, detects window borders and snap to those as regions, optionally converts between gif/mp4, and uploads to a variety of sites. Also handles screenshots with a quick built-in image editor, file uploads, and more. <10MB total size so fairly lightweight.

It's open source, too!

https://getsharex.com/

rococode··on Japan's Paper Culture
Itoya is amazing, it's like a wonderland of stationery!

I also highly recommend kakimori, which builds custom notebooks that you can select all the parts for (binding, paper, cover, etc.). Really memorable experience, and it's in a quieter residential part of the city (but still fairly convenient/central) that feels very different from the usual tourist spots.

rococode··on Could housing be cheaper and better if we stop building so many staircases?
Here's something that happened one week ago, a perfect (and sad) example of what happens when you only have one set of stairs:

https://en.wikipedia.org/wiki/2021_Osaka_building_fire

> The victims gasped for air and had difficulties escaping, as there was only one escape route, with the emergency stairs and elevators being located outside the clinic.

> Experts were surprised by the fire's high death toll. The authorities are investigating how victims became trapped and the floor filled up with smoke so quickly.

> Minister for Internal Affairs and Communications Yasushi Kaneko ordered the inspection of some 30,000 buildings in Japan that have three or more floors, but only a single stairwell.

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