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mportela

507 karma · joined April 26, 2016

Proudly Brazilian

Member of Technical Staff @ Xcelsa MS Computer Science @ NYU

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mportela··on Payments Canada announces launch of Canada's Real-Time Rail (RTR) payment system
It will _eventually_ be exposed to consumers through their banks, but it is financial infrastructure for now.
mportela··on We've built an open-source feature flag server for 11 years
Wouldn't you be having bigger problems if the DB is down (especially if you have good defaults for the flags)?
mportela··on Now Google says it might use your Gmail and Google Photos data to target ads
I've never had issues, but I also use my own domain with it instead of `@protonmail` so that might help...
mportela··on Now Google says it might use your Gmail and Google Photos data to target ads
I'm using Proton. Never had an issue with them.
mportela··on Terence Tao: Math 2.0 [pdf]
Agreed. IIRC the mechanism for anesthesia in unknown to this day. In fact, medicine as a whole is very pragmatic and time and time again prefers using techniques with unknown mechanisms but proven results than waiting for a reasonable scientific explanation of what’s going on.
mportela··on Visa, Mastercard, major banks facing new litigation over 'anticompetitive' fees
Awesome! Rewards are basically transferring wealth from the poor to the rich.
mportela··on Visa, Mastercard, major banks facing new litigation over 'anticompetitive' fees
It’s not about what they have to offer to Europeans, but rather to Brazilians traveling in Europe. PIX is developed by the Brazilian Central Bank to the benefit of Brazilian citizens.
mportela··on U.S. State Department pauses immigrant visa applications
Oh, yeah, that makes sense!
mportela··on U.S. State Department pauses immigrant visa applications
Not really… Theoretically, you could get it issued in a third country under very restrict conditions (renewing to the same class, in Mexico or Canada, force majeure, etc). However, the likelihood of it being denied was considerably higher, so basically all immigration lawyers strongly recommended going back to the home country.

The recent policy change ended that possibility altogether.

mportela··on U.S. State Department pauses immigrant visa applications
Not _this_ time but they were targeted previously: banning up to 75 countries from issuing visas, adding a $100k fee to the application, forcing visa renewals to go through consular processing instead of change of status, etc.

The end goal is to do end migration as a whole (especially from “certain places”) and expel all “undesirables”. To get there, they will test the waters, get the right precedents and judicial orders in place, and move the Overton window enough so the public sees these actions as “business as usual”.

mportela··on Disruption with Some GitHub Services – Resolved
I agree. I think it is the kind of situation that goes “gradually and then suddenly”, to quote Hemingway.
mportela··on Disruption with Some GitHub Services
GitHub Actions upkeep is down to one 9. I miss the days big tech aimed for four or five 9s of reliability :(
mportela··on China's Rise in Drug Development Looms over U.S.
Non-paywalled article: https://archive.is/9tg3a
mportela··on Show HN: Number Gacha, a gacha game distilled to its essence
The legit gacha experience
mportela··on Tell HN: Happy New Year
Happy new year from New York!
mportela··on Metropolis 1998 lets you design every building in an isometric, pixel-art city (2024)
I've recently watched a video [1] that mentions how pre-rendered graphics dominated the 90s-early 2000s and were replaced by real-time rendering. You'll probably like it too!

[1] The Beauty of Pre-Rendered Graphics https://www.youtube.com/watch?v=e3SwbHIPnfo

mportela··on Artificial Intelligence: Foundations of Computational Agents
FWIW I had a professor that defined "robotics" in the same way (we even had a quite philosophical debate on whether automatic doors are robots). I ended up liking Norvig and Russell's definition better by appending the word "autonomously".

Another interesting word that is quite out fashion nowadays is "cybernetics": "Cybernetics is the transdisciplinary study of circular causal processes such as feedback and recursion, where the effects of a system's actions (its outputs) return as inputs to that system, influencing subsequent action." [1]

Having studied Control Engineering in college, to me, all these things are feedback control loops. [2]

[1] https://en.wikipedia.org/wiki/Cybernetics [2] https://en.m.wikipedia.org/wiki/Feedback

mportela··on Statistical Formulas for Programmers (2013)
Then definitely what 3Blue1Brown's video on eigenvalues and eigenvectors. [1] That's when I clicked to me! His entire series on Linear Algebra is incredibly well produced.

[1] https://youtube.com/watch?v=PFDu9oVAE-g

mportela··on The US island that speaks Elizabethan English
While that's true, one of the reasons why Spain mandates Castellano in the federal level is a legacy of Franco's push to annihilate the other languages spoken in the country. In a way, forcing a single language and culture is a textbook example of what authoritarian governments do.
mportela··on Revolt: Open-Source Alternative to Discord
And with good audio chat
mportela··on Revolt: Open-Source Alternative to Discord
Curse was becoming more popular than TS at the time, but Discord offered a better quality of audio and stable connection. That's why my group of friends migrated to Discord around 2016.
mportela··on Show HN: I made my own OS from scratch because I was bored
Great, now go back to study before Duolingo kidnaps your family
mportela··on Surnames from nicknames nobody has any more
"-y" is a quite common diminutive suffix in English nowadays. As a fun fact, Americans find hilarious/cute how Brazilians pronounce English words ending in consonants (e.g. WhatsApp/Facebook) adding an extra "i/ee/y" sound because it sounds like adding "-inho" to them!
mportela··on I'm Peter Roberts, immigration attorney, who does work for YC and startups. AMA
I would assume so, since a foreign attorney wouldn't be able to help with US immigration law.
mportela··on Ozempic and Wegovy are selected for Medicare's price negotiations
Unfortunately, that's all the Biden administration could get written into law. The Big Pharma lobby is too strong and definitely battled to keep this list as small as possible.
mportela··on Apple will soon receive 'made in America' chips from TSMC's Arizona fab
like the healthcare industry in the US
mportela··on Lucy: A concise language for describing Finite State Machines
Hmm, concatenation and alternation are exactly what I thought of when reading the work "composition" (I probably had functional programming in mind).

I'm curious. What came to your mind for "composition"?

mportela··on Updates to H-1B
I believe that's the O-1 visa, not the H-1B.
mportela··on Ask HN: How do you find part time work?
Follow up question: how do you find freelancing opportunities?
mportela··on Bankruptcy judge rejects sale of Infowars to The Onion
It's called garnishment [1]

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

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