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cardosof

1,013 karma · joined August 7, 2015

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cardosof··on Statistical process control after W. Edwards Deming
I've used Deming's ideas to optimize ads and it did work way better than bayesian ab testing or ML-based approaches. However, management did not like that I was using something so old, so I had to rebrand it, but it was Deming still.
cardosof··on Doctests in R
They changed their name to Posit so yeah, that's a conscious move away from R.
cardosof··on Doctests in R
Not really related to the post but since R is so rare here in Hacker News, I will ask anyway: is R still worth using in 2022-23? Even RStudio gave up it's R brand to focus on Python.
cardosof··on Amazon Alexa is on pace to lose $10B this year
The three basic options: either the price for the product pays for itself and its future costs, or the product needs a subscription to run properly, or ads.

Amazon didn't want the first route so they could gain market share/penetration quickly, so we're stuck with options 2 and 3. Voice assistants are a new media and people hate ads, especially where they are not expecting them - so no wonder they failed to insert ads there. We're left with what I believe they'll end up doing - requiring a prime subscription.

cardosof··on Ask HN: How I get a job that uses C?
Here's a personal anecdote: my father is an engineer at a small, 8-person company. He's 68. They use two languages: C and Java. The short story is, they created a system for telco companies in late 90s. Said system deals directly with specific Telco hardware and needs to run real-time fast. The system is over 20 years old and despite this or that patch over the years its core remains the same. So there's a C part, which is the engine and is really performant, and a Java part, admin tooling, testing and integration.

So I guess if I had to find companies with C jobs I would try: - niche jobs/industries - small companies - decades old systems

The problem is that those aren't usually on the mainstream channels for job searching, and they may take years to open a single position.

cardosof··on Ask HN: Working in a VR Headset?
the AI is driving

On a more serious note since this is not Reddit, I have watched movies in VR during bus trips (6h long routes). It works, it's way better than looking at laptop/tablet/phone.

cardosof··on Ask HN: Why do HN feel so negatively about Musk?
He's too erratic for his position at the public company he runs and others he's part of. He tends to run away from technical confrontations. He seeks attention, most often in childish ways. He runs business based on hype, guerrilla marketing and raising consumer expectations, not necessarily on technological breakthroughs (although they do exist). Some people think he's an asshole or he's fraudulent and practices market manipulation (that's either subjective or a legal matter).
cardosof··on Apple gets $19M fine in Brazil for not selling iPhones with charger
In Brazil, what other companies are doing is this: you buy the phone, you get the charger as a gift. It doesn't need to be in the same package, and sometimes it arrives by mail days after - as long as consumers get the charger, no one complains.
cardosof··on Intel plans thousands of job cuts in face of PC slowdown
And the effect gets multiplied - all of them have a family, buy products, hire services etc.
cardosof··on A Cheap 2.5GbE PoE Unmanaged Switch
Switches switch, routers route. More seriously, a switch connects multiple endpoints to form a network, while a router connects switches to create a network of networks, and it routes packets between nodes in the most efficient way so one side of a network can communicate with the other side of another network.

At home, some use additional switches to get more ethernet ports.

cardosof··on Managers with a business degree reduce employees' wages, do not increase profit
I took some business classes at NYU eons ago (2013) and most of the time we were discussing human conflicts and incentives. I think yes, many business schools, even "top" ones, may very well suck, but 90% of anything is crap anyway and there are good lessons in business classes if you know how to find them.
cardosof··on Brazilian vote counting (real time)
Richer areas always get counted first.
cardosof··on Roku will now work with Nielsen to track cross-media viewership
I think it is more reasonable to assume most executives have similar incentives and mindsets so all companies are as "evil" as they can with all the data they have if they believe they can get away with it.
cardosof··on Why do SaaS companies need sales?
Historically, yes* - I'm not sure how things are today.

* https://youtu.be/GrhSLf0I-HM

cardosof··on Facebook proven to negatively impact mental health
Social networks should put up warning signs and only accept 18+ users, just like cigarettes.
cardosof··on 'Soleus pushup' fuels metabolism for hours while sitting
So if I activate this tiny muscle in my calf for a while my metabolism will be up for hours? And where all that added energy will go? I don't know a thing in this area but I know that when something looks too good to be true, it probably isn't.
cardosof··on Better Products Often Fail (and we’re all worse off for it)
Posts mentioning WordStar always make me smile. My father, a 68 y.o. C dev, uses WordStar to this day and always tells me to switch to it from whatever I'm using.
cardosof··on Investors bought a quarter of US homes sold last year
There and back again, a Georgism tale.
cardosof··on Can the Visa-Mastercard duopoly be broken?
Can the duopoly be broken? Yes, you can have Pix, the system created by the Brazilian Central Bank for instant, verified payments and some credit/installments features. It's cheaper for business but then a central bank will know all your transactions. There are some talks of sharing the system with Canada and other countries.
cardosof··on Tell HN: Amazon shopping is racing to the bottom of quality
> they treat retail like its an embarrassing legacy offering

I agree, which is such a shame because their retail brings valuable customer data they'll later monetize with ads and other things.

cardosof··on Who do we spend time with across our lifetime? (2020)
Same here, but everything changed as some folks started having children. Now all events are back, people attend & they are fun again. So, at least in my family, the events are there for the kids and, without kids, no one gets interested.
cardosof··on Leaked documents reveal Amazon’s process to review employees’ worth to Amazon
It's not all that controversial to me. It's simple and it's been around for decades at least: put all employees in a big bell curve, fire one end and promote the other, try to raise motivation and productivity for everyone else, until the next performance review cycle.

Everyone with some sense should hate that, though.

cardosof··on The true costs of inflation in small-town Texas
In general I agree with you, just want to point out that, as others mentioned, inflation was already in a historic record since 1982 by January/22, before the war. Also:

> Russia No one did really stop buying Russian exports, as we can see through RUB/USD YTD. Their exports actually grew.

> COVID, lockdowns It disrupted businesses and supply chains and still has a direct impact on inflation.

Having said that, I think it's about the contribution of each, and I believe all the quantitative easing and the fiscal spending plans may play a larger role on economic issues than many would like to admit.

cardosof··on The true costs of inflation in small-town Texas
As others said: traffic goes down, restaurants close doors. Food prices may not be the culprit, people getting their meals from delivery and cooking at home may be the cause as well.

Having that said, I do work in market research and gather purchase data and create inflation models for a living and to be honest things look really scary from the US to UK+EU and Latin America (which is used to high inflation though). Who knew all that free money from the last decade would do that!

cardosof··on Ask HN: What's is your go to toolset for simple front end development?
Cool, can you build production stuff / products or is it focused on personal projects?
cardosof··on Spotify’s Joe Rogan-Powered Podcast Bet Hasn’t Paid Off
Too soon to tell? If Spotify reaches "the home of podcasts" status, customers who rarely listen to podcasts may keep their subscriptions just for those rare occasions.
cardosof··on How normal am I?
Based on algorithms like those, my 6-7ish beauty score would stop me from becoming a popular social media influencer if I wanted to. Isn't that lovely!
cardosof··on Depressive Realism
"Skepticism is a shortcut to wisdom"
cardosof··on Ask HN: I’m 41 and still unmarried – what should I do?
I was lucky enough to start dating my wife when I was 16 and she was 15. Obviously I can't tell much about dating, my love life was set up before online dating, however, my impression from talking to friends and family is that: 1) people expect their possible partners to be completely aligned on lots of things which don't really matter like tastes or opinions in this or that or background and education level. Having similar character, spine and the same outlook to life matters whey more. 2) sometimes they expect their partner to be a life coach, a career mentor, a doctor or lawyer or whatever - someone with answers to difficult things in life. 3) "oh if he's saying X then he definitely is like my ex": people with many past relationships may be biased and dump a good candidate just because said candidate signaled something.
cardosof··on Job interview questions engineers should ask, but don't
> If the solution can't be differentiated from its competitors, beware.

This is critical and not straightforward to evaluate. Complexity is a (if somewhat bad) proxy for differentiation, in the sense that if you can build it in a weekend, so does your competitor - and maybe he's got the mythical 10x engineer who'll ship it faster.

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