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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 Facebook recruiting and Unix systems
"Ha! He's lying on his resume! Rejected".
nandemo··on U.S. stock valuations haven’t been this extreme since 1929 and 2000
That's not a good analogy. When they say S&P 500 stocks are "expensive" than before, that doesn't mean (just) expensive in absolute terms. It's expensive in terms of price/earnings ratio and such metrics.

The story is still suspicious for other reasons: what jedberg said.

nandemo··on Apple staffers reportedly rebelling against open office plan
Nah, in this case it's good sarcasm, if someone doesn't get it they need to work on their sarcasm detector:

http://www.wikihow.com/Detect-Sarcasm-in-Writing

nandemo··on New York’s Subways Are Not Just Delayed, Some Trains Don’t Run at All
Is that the official reason though? "The service cannot be stopped even for planned maintenance" doesn't sound like a reasonable constraint.
nandemo··on Want to Be Happy? Buy More Takeout and Hire a Maid, Study Suggests
Ah, makes sense. I'm from Brazil where rice & beans is a staple, but 500g sounds like a lot!
nandemo··on Want to Be Happy? Buy More Takeout and Hire a Maid, Study Suggests
> black beans (raw)

What sort of black beans are those? The ones I know aren't edible when raw.

nandemo··on Amazon Hub
Swipe a card? At least in my building there's no need. It's hard to imagine random people messing with it.

The low-tech thing has its downsides: the other day the delivery guy wrote down the wrong code so I had to wait for the building manager to open it.

That said, I agree that it works very well. And I think it's a somewhat recent innovation. Apart from my current apartment none of the places I've lived here (10+ years) had lockers.

nandemo··on Longest Lines of Sight on Earth
Mt Fuji is only about 100km away from Tokyo. Main problem is there are tons of buildings blocking your view, but if you're at a high enough floor you can see the it even when it's a bit cloudy. For example, see the last pic here:

http://traveljapanblog.com/wordpress/tag/mt-fuji/page/3/

nandemo··on “We will stop updating and distributing the Flash Player at the end of 2020”
We came here to bury Flash, not to praise it.
nandemo··on Esperanto as an Asian language
How is it unfortunate? Korean might have some features that sound familiar to a Japanese speaker -- e.g. word order and morphology of Sinitic vocabulary -- but phonology is quite challenging and non-Sinitic vocabulary is completely different. Overall it's far, far harder than Esperanto for Japanese speakers.
nandemo··on Monopoly was invented to demonstrate the evils of capitalism
That's too kind an assessment. Monopoly sucks. It sucks as an educational tool and it sucks as a board game.

First, if it was meant to teach the evils of capitalism it has failed in many levels, as the article illustrates. Even if you were to play with the amended rules, it'd be moot; nobody cares about Georgist socialism anymore.

As a board game: there are literally hundreds of games better than Monopoly. Even we restrict ourselves to so-called "family" games. If there's something you like about Monopoly, I can assure you can find a better game that has that something but it's better designed:

https://boardgamegeek.com/familygames/browse/boardgame?sort=...

Many will be simpler and shorter too. Of course, you might like or dislike a particular game in that set, but consider that Monopoly is ranked at 1583 in the family category. There's no excuse to play Monopoly unless one somehow has managed to stay unaware of the existence of all these other games.

nandemo··on What every PhD should know before interviewing with a tech startup
> I do find it remarkable the extent to which knowledge workers are discouraged from sitting and thinking about stuff.

That's such an uncharitable interpretation of the post.

It's a job interview, not a final exam. You're not supposed to sit there thinking for half an hour in order to produce a flawless solution. Maybe the interviewer was making progress, maybe they completely misunderstood the scope of the problem, who knows? The interviewers can't read your mind. Ask clarifying questions, make sure what would be the output of the algorithm in simple cases, then think about it enough so you can outline a solution.

nandemo··on Bloom Filters by Example
Glad to help. But I noticed the analogy is a bit flawed; testing for membership does not add anything to the set, but the analogy might imply asking yaSeenThisFaceBefore(x) will make the savant remember x. I should change the story and the 2 functions to "remember this terrorist" and "is this a terrorist?" or something like that.
nandemo··on Bloom Filters by Example
If I was going to explain a bloom filter like you're 5... a bloom filter is like a savant who never forgets a face -- maybe he's got a job in passport control in Arstotzka -- if you show him someone's face or picture once, he'll never forget it: if any time later you show him the same picture and ask him "have you seen this face before?" he'll say "yes" without fail. If he replies "no way", you can be 100% sure he's never seen it. But his memory isn't photographic: he confuses people's faces after a while, recognizing faces he's never seen, and that becomes worse the more people he's seen. So to be safe he doesn't reply just "yes" but "hmm, I guess so".

In computing terms the interface has 2 methods:

- takeALookAtThisFace(x)

- yaSeenThisFaceBefore?(x) which returns either "no way" or "hmm, I guess so".

"no way" means P(x is a member) = 0. Its negation is not "hell yes" (P(x is a member) = 1), it's "maybe" (P(x is a member) > 0).

nandemo··on Linus: “I no longer feel like I can trust ‘init’ to do the sane thing”
> Why do so many people hate systemd but not macOS's launchd [0]?

My guess is, it's not as relevant because Mac OS isn't as widely used in servers as Linux.

nandemo··on How Strength Training Changes Your Body for Good
I don't get it; I mean, I understand the idea of selection bias but what does that have to do with grandparent's point?

OK, a relatively large percent of hunter-gatherers die due lack of antibiotics & other modern medicine. But gp isn't claiming it'd be a good idea to return to a full hunter-gatherer lifestyle. They're just observing that "this is what a biologically normal, healthy homo sapiens looks like". And if you go to the gym you might replicate that -- presumably without incurring the fate of short-lived hunter-gatherers.

nandemo··on Counterintuitive problem: People in a room keep giving dollars to random others
No, credit cards essentially replace the tab. In fact that's how credit cards were invented:

https://en.wikipedia.org/wiki/Diners_Club_International#Orig...

With tabs, the bar management has to do risk management: to decide who is allowed to keep a tab and how large each tab can get. This is hard to do without access to customers financial data. With credit cards, that risk management is done by the credit card network (mainly the issuer bank). The merchant pays a fee, and in return it gets cash at a predictable timeline with relatively little risk.

nandemo··on Counterintuitive problem: People in a room keep giving dollars to random others
In addition to what wdewind said, the restriction on charging interest and late fees is problematic. What to do about defaults and late payments? In the Gulf, the solution is to put debtors in prison.
nandemo··on Counterintuitive problem: People in a room keep giving dollars to random others
You're kidding, right? No way a generic observation about a markov chain (which doesn't even model interest) implies that "uncapped debt reduces wealth mobility".
nandemo··on Amazon engineer will let strangers manage his $50,000 stock portfolio 'forever'
Right (not sure why you're downvoted). I don't think the spread will have a large effect though, for such infrequent trading.
nandemo··on Focus on Infants During Childbirth Leaves U.S. Moms in Danger
Hence the qualifier "with exceptions". This could be elaborated but again, not trying to convince anyone, was just pointing out that being anti-abortion doesn't have to be based on religious beliefs.
nandemo··on Amazon engineer will let strangers manage his $50,000 stock portfolio 'forever'
I think y'all are overestimating the risk. He isn't throwing it away. He's mentioned here that it's max 1 trade of 1 share every 5min. The initial portfolio is very diversified, so barring a concerted attack this experiment's returns likely won't be much different from a random actively managed mutual fund -- with the advantage of having no management fees and no trading fees either.

And he can stop the experiment any time.

nandemo··on Focus on Infants During Childbirth Leaves U.S. Moms in Danger
Not trying to convince anyone, but: I believe abortion (with exceptions) is somewhere between manslaughter and murder morally, and therefore should be illegal. Nothing to do with religion.

The "pro-life" label is silly. I don't believe people should have more children (I don't have any). Avoiding unwanted pregancies i.e. contraception is a solved problem. Contraception should be freely available as a matter of public health, just as vaccines are.

nandemo··on Tesla drops 7% after Goldman Sachs says the stock is worth $180
Well, GS has done illegal things before. But yeah, I don't think they'd try to do something blatantly illegal like this.

This wouldn't even appear on HN's radar if it wasn't Tesla.

nandemo··on Tesla drops 7% after Goldman Sachs says the stock is worth $180
What you're doing is technical analysis. It doesn't work.
nandemo··on ‘Anumeric’ people: when a language has no words for numbers
> the absolutist belief that these peoples' lives will be improved by exposing them to a modern education

I haven't seen the documentary, did anyone say that? My point is if you get monetary benefits, then you need to be able to read, write, and do arithmetic. This isn't a controversial idea. We aren't talking about uncontacted tribes. And it's voluntary. Some people want to get education, and they should be able to. The idea the that the government should somehow deny them that is untenable.

And if you think the government should not offer them social security at all then you have a bigger problem.

nandemo··on ‘Anumeric’ people: when a language has no words for numbers
The Everett Sr.'s paper that I linked elsewhere in this thread mentions a bunch of other researchers that have studied Piraha.
nandemo··on ‘Anumeric’ people: when a language has no words for numbers
So your fascination with their way of life is more important than kids getting basic education?

FIY, mandatory schooling doesn't apply to indigenous people. But they're still Brazilian citizens, and our government is obligated by law to offer education to all citizens. Indigenous people (including the Piraha) may also be entitled to e.g. retirement benefits, so it makes sense to learn arithmetic.

nandemo··on ‘Anumeric’ people: when a language has no words for numbers
Everett's reply here:

ling.auf.net/lingbuzz/000427/current.pdf

nandemo··on Poverty is not a personal choice, but a reflection of society
Whether that claim is accurate or not can be judged on data, no? Out of curiosity I googled "graduate high school, maintain employment, and don't have children out of wedlock" and this is the first result:

> Let politicians, (...) and parents drill into children the message that in a free society, they enter adulthood with three major responsibilities: at least finish high school, get a full-time job and wait until age 21 to get married and have children. Our research shows that of American adults who followed these three simple rules, only about 2 percent are in poverty and nearly 75 percent have joined the middle class (defined as earning around $55,000 or more per year). There are surely influences other than these principles at play, but following them guides a young adult away from poverty and toward the middle class. [0]

It's not saying anyone can get rich. It's not saying poor people are lazy. It's saying these 3 things will have a major, measurable impact on your future and your children's.

[0] https://www.brookings.edu/opinions/three-simple-rules-poor-t...

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