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nandemo

4,159 karma · joined August 24, 2008

Brazilian developer living in Tokyo.

Contact me at <rafael dot caetano at gmail dot com>.

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nandemo··on Ask HN: Why would Human Interest (YC SC15) make such arrogant statement?
I don't see anything wrong with it. Honestly it is your post that sounds off to me. You're implying that somehow Human Interest is discriminating against people with Asperger's but there's nothing in their post that says that.
nandemo··on A Brief Guide to a Few Algebraic Structures
My favourite abstract algebra textbook is Fraleigh's A First Course in Abstract Algebra. Unlike the article here, which just dumps you a bunch of definitions, the book introduces each structure with proper motivation. It's not a CS approach though.

https://www.amazon.com/First-Course-Abstract-Algebra-7th/dp/... (the 1-star reviews apply to the Kindle version, not the contents. Just get the paperback and you'll be fine)

If you want a CS approach I suggest learning basic Haskell then tackling the fantastic Typeclassopedia. The downside is you'll be missing on structures/theorems that are super useful in math but not that useful in programming.

https://wiki.haskell.org/Typeclassopedia

nandemo··on What’s the rush? The power of a slow morning
In TFA, "slow morning" doesn't mean waking up late. It means waking up early but taking your time before starting work. If you're a night owl you're probably not doing slow mornings.
nandemo··on Snapshots of Tokyo’s vivid street life
Tokyo's public transit system is overrated IMO. Sure, trains and subways cover a lot of ground and are usually on time, but most of the lines are well over 100% crowdedness during rush hour:

https://japantoday.com/category/features/lifestyle/the-most-...

nandemo··on China can apparently now identify citizens based on the way they walk
Forced? That sounds a bit too 1984-ish. I believe in a more Brave New World future, where people will pay good money to get chipped and the only "natties" (unchipped people) will be people who either cannot afford it, or "wackos".
nandemo··on Insane complexity of calendrically correct date and time operations
What do you mean by "actually reflecting the world"? If you mean using objective criteria of some sort, how would that help deciding if the week starts on Sunday or Monday, or what days of the week are to be business days?
nandemo··on Sony Finally Admits It Doesn’t Own Bach
No one. That's the joke.
nandemo··on How WhatsApp Destroyed a Village
It's clickbaity as hell.

If anything, I wish it was more "negative" about India; instead of talking about why people take part in lynchings and why they are so common in the country, the blame goes to WhatsApp, which "has been getting Indians killed". It's as if the actual killers had no agency.

Same thing about the anti-vaccination groups in Brazil: as a Brazilian citizen my concern is that those groups exist at all and are affecting public health, not what app they happen to use.

nandemo··on The Servers Are Burning
In a surprising turn of events, the user showed they did care.

> “@okcupid how am I supposed to get my daily dose of crushing rejection and emotional humiliation if your site is down????”

nandemo··on Don't Steal Money from Day Traders Before They Lose It
Just by the title I knew it had to be a Matt Levine story.
nandemo··on PagerDuty (YC S10) Raises $90M at a $1.3B Valuation
Banks do lend against receivables.
nandemo··on Tell Your Co-Workers How Much Money You Make
Japan.
nandemo··on Tell Your Co-Workers How Much Money You Make
Where I live permanent employees are protected, so the probability of being legally fired for disclosing my salary is 0, and the probability of illegally being fired should be very close to 0. However, the probability of my salary going up is also very close to 0. In fact, the probability of my salary decreasing is arguably higher than the probability of my salary increasing, since bonuses vary and are decided semi-arbitrarily. :-)

In any case I know a much more effective way to increase my salary: getting a green card and moving to the US. The flipside is that my American wife would have a hard time finding a good job in her field in the US.

nandemo··on More Americans report near-constant cannabis use
> Posting with a throwaway for obvious reasons.

Not obvious to me at all. Weed is already legal in several states in the US; weed use is far from taboo on HN; you have FU money. So why the throwaway? (Of course you have right to your privacy, I just wonder what are the "obvious" reasons ...)

nandemo··on Credit-Card Backlash Mounts as Kroger Weighs Expanding Visa Ban
AFAIK such cards make money primarily on breakage, i.e., points that people buy but do not use.
nandemo··on Fukushima’s nuclear signature found in California wine
AFAIK the main reason is that Japanese whiskeys started getting awards and demand exploded. Even here in Japan they're expensive, to the extent that scotch has a better bang to the buck ratio.
nandemo··on Amazon Prime Day deals 'not what they seem'
In Japan too.
nandemo··on The Japanese Calendar’s Y2K Moment
Two things that are missing from the article:

1) because of this problem, the government is considering keeping Heisei for a while after the emperor steps down https://minhan.jp/4599 (in Japanese)

2) the Japanese calendar (specifically the year) is used in some official documents and formalities, but in daily life people mostly use the Gregorian calendar. If you ask a bunch of Japanese people what Heisei year is now, I bet a significant percentage of them won't remember. I've worked as a software engineer in Japan for over 10 years and I've never had to deal with Japanese calendar years.

nandemo··on Mastering Chess and Shogi by Self-Play with General Reinforcement Learning
Presumably tlb meant what is humanly possible...
nandemo··on Mastering Chess and Shogi by Self-Play with General Reinforcement Learning
Wait, how's the 24h x 5000 TPUs relevant? That is training time, and that training corresponds to years and years of hardcoding evaluations in Stockfish, not to compute time during the match.
nandemo··on Mastering Chess and Shogi by Self-Play with General Reinforcement Learning
I'm pretty sure starting from zero is the point of the Leela-Zero. If they started from Stockfish, it wouldn't be a replication of AlphaZero.
nandemo··on Vassal – Online Adaptations of Board Games
FCM is one game that I prefer to play online. The physical version is a pain to play.
nandemo··on Vassal – Online Adaptations of Board Games
Other games that use simultaneous action: 7 Wonders and one of my top 5 games, Race for the Galaxy.
nandemo··on Vassal – Online Adaptations of Board Games
Thanks for doing this.

For those who are looking into taking up boardgames, I highly recommend Codenames.

nandemo··on Does anyone remember websites?
Besides, there's very little politics in niche subreddits. I'm subscribed to /r/pic (not /r/pics!), /r/flute, /r/stonerrock, /r/chess, /r/boardgames, /foreignmovies, /r/vermiculture and /r/japanlife and the latter is the only one where American politics sometimes creeps up.
nandemo··on Does anyone remember websites?
This was a nightmare before tabs were a thing.
nandemo··on Using Haskell to debug a C chess engine
Personally, I think an engine written in Haskell would be more interesting. Given how ridiculously strong some engines are when running on commodity hardware, a little performance hit wouldn't be the end of the world.
nandemo··on Japanese Vending Machines at Night Juxtaposed with a Wintry Hokkaido Landscape
Point taken.
nandemo··on Japanese Vending Machines at Night Juxtaposed with a Wintry Hokkaido Landscape
> I got lost on takao mountain once and was utterly hopeless of ever finding civilization again.

Wait, what? Takao mountain is in Tokyo! Yeah, not central Tokyo but still, it's like a 45min train ride from Shinjuku. You make it sound like it's some remote place full of bears. :-p

nandemo··on Facebook recruiting and Unix systems
Money can be exchanged for goods and services.

Besides, there are other upsides: you get to work at a company that values developers, you'll have lots of competent colleagues and you'll learn a lot, and you'll work at a product that hundreds of millions of people love.

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