Hacker News: woliveirajr

New comment by woliveirajr in "Smart people don't think others are stupid (2012)"

woliveirajr — Wed, 14 Oct 2026 13:06:42 +0000

And smart people suffer [0] [1] [2] [3] [4] exactly because they, first, think that others can have the same scrutiny about things and get surprised/disappointed when they find out how other people reach conclusions. Loneliness is the most common.

[0] https://doi.org/10.1111/j.0963-7214.2005.00328.x

[1] https://doi.org/10.1111/bjop.12181

[2] https://doi.org/10.1016/j.intell.2020.101465

[3] https://studenttheses.uu.nl/handle/20.500.12932/28009

[4] https://link.springer.com/article/10.1007/s43076-023-00313-8

Evil Font Tool

woliveirajr — Thu, 08 Oct 2026 16:44:18 +0000

Article URL: https://github.com/DoctorEww/EvilFontTool

Comments URL: https://news.ycombinator.com/item?id=50008159

Points: 1

# Comments: 0

New comment by woliveirajr in "Opus 5.5 agents discover two room-temperature magnetic semiconductor candidates"

woliveirajr — Tue, 06 Oct 2026 13:50:43 +0000

who created the GIRLS [0]. Oh my, we surely [1] live in a simulation played by a teenager.

[0] https://en.wikipedia.org/wiki/Pick_operating_system#History [1] https://en.wikipedia.org/wiki/Airplane!

New comment by woliveirajr in "Opus 5.5 agents discover two room-temperature magnetic semiconductor candidates"

woliveirajr — Tue, 06 Oct 2026 01:44:11 +0000

Once upon a time, in Brazil, there was a campaign about STDs. They decided to call the male genitalia as "Braulio". That name become ruined forever.

New comment by woliveirajr in "Anthropic is a supply chain risk for all of us"

woliveirajr — Sun, 27 Sep 2026 22:00:54 +0000

Not only Anthropic but any LLM that refuses to produce an answer because of some objection.

I know that no company want to be associated with a headline that their model was used to {something}.

Instead of helping us better learn something, we're heading (in fast pace) to the world where we won't be free to think outside allowed topics.

Example: I asked some LLM to give me the spell (from a certain religion) to bring justice to someone. It refused as it would be "too powerful and could be use to cause damage".

New comment by woliveirajr in "First Principles Thinking"

woliveirajr — Fri, 25 Sep 2026 15:44:49 +0000

And it's a skill that you'll use in other contexts. Over too learn and practice it in IT/physics, and you find out that you can use it to psychology, humans around you are dealt with another depth and different outcomes become possible

New comment by woliveirajr in "Don't Paste the AI, please"

woliveirajr — Thu, 20 Aug 2026 11:01:50 +0000

I'd love the link to all those Principles

New comment by woliveirajr in "Online clinics and influencers are promoting Cialis as a longevity drug"

woliveirajr — Mon, 17 Aug 2026 13:50:04 +0000

Sildenafil [0] was synthesized to treat high blood pressure. Erectile disfunction was a side effect that raised much more interest.

Tadalafil [1] followed the path of Sildenafil about the phosphodiesterase type 5 (PDE5) enzyme inhibitor.

Help to live longer was the main objective since the beginning.

[0] https://en.wikipedia.org/wiki/Sildenafil#History [1] https://en.wikipedia.org/wiki/Tadalafil#History

New comment by woliveirajr in "Compression is prediction"

woliveirajr — Tue, 11 Aug 2026 20:57:30 +0000

There is Compression done by Prediction by partial matching [0]

There is the Kolmogorov Complexity [1], Normalized Information Distance [2] and Normalized compression distance [3] that correlates those.

Finally, there's the Pre-Big Bang Informational Compression and the Delayed Release of Antimatter [4]

All big {rabbit/black} holes to lose some time, if you have any.

[0] https://en.wikipedia.org/wiki/Prediction_by_partial_matching

[1] https://en.wikipedia.org/wiki/Kolmogorov_complexity

[2] https://homepages.cwi.nl/~paulv/papers/chapter08.pdf

[3] https://en.wikipedia.org/wiki/Normalized_compression_distanc...

[4] https://philarchive.org/rec/GREPBI

New comment by woliveirajr in "Parametron: 50s Japanese computer that uses neither transistors nor vacuum tubes"

woliveirajr — Mon, 10 Aug 2026 16:54:29 +0000

Some years later, Goto was considered harmful :-)

A Trailing Slash Bypassed AWS API Gateway Authorization

woliveirajr — Thu, 06 Aug 2026 14:10:11 +0000

Article URL: https://www.infoq.com/news/2026/06/aws-api-gateway-auth-bypass/

Comments URL: https://news.ycombinator.com/item?id=49196942

Points: 1

# Comments: 0

New comment by woliveirajr in "The Cold Email"

woliveirajr — Thu, 30 Jul 2026 13:45:22 +0000

In 2013 there was some question about the SuperCow Powers that some programs had. I took time to ask Jason Gunthorpe about it. He didn't answer my email: we make a post about it [1] that became the canonical explanation. That had a huge impact on me: how could I take so long to answer simple questions from friends when Jason Gunthorpe took time to answer mine?

[1] https://web.archive.org/web/20190322061230/https://plus.goog...

New comment by woliveirajr in "US tobacco firms applied tobacco strategies to globalize ultra-processed foods"

woliveirajr — Fri, 05 Jun 2026 12:17:01 +0000

It seems similar to just regular marketing. Previously, beverages and drugs companies have used the same playbook, and data analysis just got better. Social sites are just the next step with even more behavioural data.

Normalized Compression Distance

woliveirajr — Fri, 29 May 2026 17:44:26 +0000

Article URL: https://en.wikipedia.org/wiki/Normalized_compression_distance

Comments URL: https://news.ycombinator.com/item?id=48326633

Points: 1

# Comments: 0

New comment by woliveirajr in "The Secret Garden of Rock-Paper-Scissors"

woliveirajr — Fri, 29 May 2026 17:44:00 +0000

Seems a lot like Normalized Compression Distance (https://en.wikipedia.org/wiki/Normalized_compression_distanc...) and Kolmogorov Complexity.

New comment by woliveirajr in "Digital Identity Management in Norway Is a Catastrophe"

woliveirajr — Fri, 29 May 2026 14:49:52 +0000

Brazil has the same. It's possible to login in the government platform by your bank login. Simplifies a lot for the general population that won't use password managers and so on. And, as banks use a 2FA, security is improved.

New comment by woliveirajr in "Toxicity on Social Media – The Noisy Room"

woliveirajr — Tue, 12 May 2026 11:45:56 +0000

Perhaps this: https://en.wikipedia.org/wiki/Spiral_of_silence

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%...