Hacker News: woliveirajr

New comment by woliveirajr in "Barn Owls Know When to Wait"

woliveirajr — Thu, 12 Feb 2026 23:37:34 +0000

C= |2p - 1| doesn't do what the author wishes.

Should be c =|2p|-1

New comment by woliveirajr in "Scientists identify brain waves that define the limits of 'you'"

woliveirajr — Mon, 26 Jan 2026 13:12:42 +0000

A cell phone vibrating in your pocket: in the first days, after some days of use, many people would feel it vibrating as a muscle sensation, not as external thing vibrating.

New comment by woliveirajr in "Management Time: Who's Got the Monkey? [pdf]"

woliveirajr — Sat, 24 Jan 2026 14:41:05 +0000

Well, that actually happens a lot, with many causes.

For example: manager is perfectionist (at some level), it takes more time to delegate than doing it yourself, there's some attitude from the subordinate to undermine the manager, there's lot of work in a specific season and manager prefer to do it himself than risking his job due to a bad work form a subordinate

In an ideal world, of course the manager would replace the subordinate. But in real life, sometimes you can't find someone in the adequate time and is better to have him doing 75% of the work instead of 0%...

New comment by woliveirajr in "Kernel bugs hide for 2 years on average. Some hide for 20"

woliveirajr — Thu, 08 Jan 2026 12:32:59 +0000

But the patchset should use the same license as the original code, shouldn't?

New comment by woliveirajr in "A4 Paper Stories"

woliveirajr — Wed, 07 Jan 2026 14:16:57 +0000

Reverse: perhaps carrying a measuring tape [0] ?

[0] https://www.amazon.com/Measure-iBayam-Measuring-Measurement-...

New comment by woliveirajr in "Standard Ebooks: Public Domain Day 2026 in Literature"

woliveirajr — Fri, 02 Jan 2026 12:32:15 +0000

> tighter

I found it amusing, considering all those memes about German words with 35 letters each.

And, as I get older, I began to consider letter size relevant to choose a book edition. Gave up buying new books and went for used, older editions with bigger letters.

New comment by woliveirajr in "Beginning January 2026, all ACM publications will be made open access"

woliveirajr — Thu, 18 Dec 2025 16:05:59 +0000

Didn't expect Brazil being off the "List of Countries Qualifying for APC Waivers"

Knowing the reality of the Brazilian's public universities, the bureaucracy of the Government and the condition of the students in general, I'm pretty sure we won't have articles from Brazil anymore.

New comment by woliveirajr in "I'm Kenyan. I don't write like ChatGPT, ChatGPT writes like me"

woliveirajr — Mon, 15 Dec 2025 12:58:26 +0000

And good students are getting in trouble (meaning "have to explain themselves") to lousy teachers just because they write well, articulate ideas and can summarize information from documents where other regular people would make mistakes.

New comment by woliveirajr in "Texas Attorney General Sues Epic for Gatekeeping Medical Data"

woliveirajr — Sat, 13 Dec 2025 12:53:22 +0000

I never understood how any exams results aren't given to the person and are hold by the doctor/hospital/company.

New comment by woliveirajr in "Rubio stages font coup: Times New Roman ousts Calibri"

woliveirajr — Thu, 11 Dec 2025 17:51:53 +0000

And now I know why the default font was changed in Word. Arg. Don't think I like Times New Roman but it was the recommend font for academic papers in Brazil (and the recommendation still persists).

New comment by woliveirajr in "Show HN: Gemini Pro 3 imagines the HN front page 10 years from now"

woliveirajr — Tue, 09 Dec 2025 16:54:21 +0000

"Ask HN: How do you prevent ad-injection in AR glasses?"

Things that I haven't thought but, after seeing it, makes total sense. Scary.

New comment by woliveirajr in "The People Outsourcing Their Thinking to AI – Rise of the LLeMmings"

woliveirajr — Mon, 01 Dec 2025 13:13:33 +0000

When you go through a problem and have to solve it, you learn to see patterns (of mistakes) and develop a sense for similar problems. Outsourcing the thinking will speed you up for known problems but won't develop your thinking ability.

The gap between those who can solve new problems (and so earn money with it) and those who can't will only increase, with all the social consequences of it. Idiocracy[0] becomes more and more a documentary.

[0] https://www.imdb.com/title/tt0387808/

New comment by woliveirajr in "How the deadly Hong Kong fire spread"

woliveirajr — Fri, 28 Nov 2025 11:15:50 +0000

It's interesting to see that the bamboo are still holding it's structure despite all the fire. And that having one flammable material in all floors (the window-protecting foam) comes down to "the weakest link" is all it's needed to begin such hell.

New comment by woliveirajr in "Dissecting Flock Safety: The Cameras Tracking You Are a Security Nightmare [video]"

woliveirajr — Sun, 16 Nov 2025 20:23:41 +0000

I'll just leave this one here

https://news.ycombinator.com/item?id=15075384

Backblaze Drive Stats for Q3 2025

woliveirajr — Fri, 14 Nov 2025 13:10:19 +0000

Article URL: https://www.backblaze.com/blog/backblaze-drive-stats-for-q3-2025/

Comments URL: https://news.ycombinator.com/item?id=45926383

Points: 175

# Comments: 22

New comment by woliveirajr in "Android developer verification: Early access starts"

woliveirajr — Thu, 13 Nov 2025 14:01:42 +0000

I'm pretty sure Brazil doesn't have a law saying that Google must forbid sideload. I'm sure that government (be it President, Central Bank etc) doesn't pressure Google about it.

I'm sure some private actors (for example, banks) would love that smartphones are as tight as possible (reason: [0]). Perhaps the same reason applies to Google [1]. But no, "Brazil" isn't demanding that from Google.

[0]: consider that some virus (insecure apps, for example) could somehow steal information from bank apps (even as simple as capture login information). The client might sue the bank and the bank might have to prove that their app is secure and the problem was in the client's smartphone.

[1]: the client, the bank etc might complain to Google that their Android is insecure

Backblaze Drive Stats for Q3 2025

woliveirajr — Wed, 12 Nov 2025 14:31:08 +0000

Article URL: https://www.backblaze.com/blog/backblaze-drive-stats-for-q3-2025/

Comments URL: https://news.ycombinator.com/item?id=45900663

Points: 4

# Comments: 0

New comment by woliveirajr in "Why Don't People Return Their Shopping Carts?"

woliveirajr — Tue, 11 Nov 2025 15:55:48 +0000

You could be right if people drove standing up. When seated, the pressure on the lower back (L3, L4, L5, S1 vertebrae) is reduced and you can drive perfectly.

New comment by woliveirajr in "Why Don't People Return Their Shopping Carts?"

woliveirajr — Tue, 11 Nov 2025 15:54:07 +0000

I noticed that myself, and confirmed with a friend: when you begin to get some harsh backpain (before getting a surgery), you find it pleasant to go shopping and be the one using the shopping cart all the way through.

New comment by woliveirajr in "Backblaze Drive Stats for Q3 2025"

woliveirajr — Tue, 11 Nov 2025 15:51:05 +0000

>The zero failure club: It was a big month for the zero failure club, with four drives making the cut: Seagate (...) Toshiba (...) .

What amazes me is that some models are running with 500+ units, in a total of 100,000+ accumulated hours, and no single drive has failed. One of the models (Seagate ST8000NM000A (8TB)) had one single failure a year ago.