Hacker News: lucasfcosta

The Last New Word

lucasfcosta — Sat, 08 Aug 2026 13:35:27 +0000

Article URL: https://www.lucasfcosta.com/fiction/the-last-new-word

Comments URL: https://news.ycombinator.com/item?id=49221727

Points: 2

# Comments: 0

New comment by lucasfcosta in "Why do AI company logos look like buttholes? (2025)"

lucasfcosta — Sat, 18 Jul 2026 12:40:26 +0000

Fantastic article. It started like a joke but then added some pretty interesting notes (still using a funny tone).

Laws of Project Management

lucasfcosta — Sun, 12 Jul 2026 10:57:03 +0000

Article URL: https://www.lucasfcosta.com/blog/laws-of-software-project-management

Comments URL: https://news.ycombinator.com/item?id=48880094

Points: 5

# Comments: 0

Lucas' Laws of Project Management

lucasfcosta — Wed, 08 Jul 2026 12:46:11 +0000

Article URL: https://www.lucasfcosta.com/blog/laws-of-software-project-management

Comments URL: https://news.ycombinator.com/item?id=48831222

Points: 3

# Comments: 0

New comment by lucasfcosta in "Unauthorized alert sent to cell phones across Brazil"

lucasfcosta — Sun, 21 Jun 2026 11:31:59 +0000

You cannot disable maximum severity cell broadcast alerts on the iPhone.

Rio de Janeiro's city government model Rio3.5 beats Qwen3.7 in recent benchmarks

lucasfcosta — Sun, 14 Jun 2026 14:38:37 +0000

Article URL: https://twitter.com/zenmagnets/status/2065796012820848699

Comments URL: https://news.ycombinator.com/item?id=48527634

Points: 142

# Comments: 45

New comment by lucasfcosta in "Backpressure is all you need"

lucasfcosta — Sun, 31 May 2026 13:27:41 +0000

Author here. Well noted. I do think backpressure might not be the ideal analogy/term.

It comes from previous posts I’ve come across, but I haven’t considered exactly what you mentioned. That’s on me.

Backpressure is all you need

lucasfcosta — Sun, 31 May 2026 12:11:27 +0000

Article URL: https://www.lucasfcosta.com/blog/backpressure-is-all-you-need

Comments URL: https://news.ycombinator.com/item?id=48345090

Points: 220

# Comments: 119

Design Docs Considered Harmful

lucasfcosta — Fri, 20 Feb 2026 11:12:31 +0000

Article URL: https://www.lucasfcosta.com/blog/design-docs

Comments URL: https://news.ycombinator.com/item?id=47086505

Points: 4

# Comments: 0

Design docs are waterfall wearing a hoodie

lucasfcosta — Wed, 18 Feb 2026 00:55:16 +0000

Article URL: https://www.lucasfcosta.com/blog/design-docs

Comments URL: https://news.ycombinator.com/item?id=47055618

Points: 3

# Comments: 0

New comment by lucasfcosta in "Ask HN: Share your personal website"

lucasfcosta — Thu, 15 Jan 2026 15:58:37 +0000

My blog and personal website: https://lucasfcosta.com

I usually write about Startups, Agile, and CLIs.

Retrospectives

lucasfcosta — Mon, 24 Nov 2025 21:30:50 +0000

Article URL: https://www.lucasfcosta.com/blog/retrospectives

Comments URL: https://news.ycombinator.com/item?id=46039590

Points: 2

# Comments: 0

Why your retrospectives don't work and how to fix them

lucasfcosta — Wed, 19 Nov 2025 09:27:06 +0000

Article URL: https://www.lucasfcosta.com/blog/retrospectives

Comments URL: https://news.ycombinator.com/item?id=45977541

Points: 1

# Comments: 0

Resend is launching inbound emails

lucasfcosta — Mon, 03 Nov 2025 22:02:09 +0000

Article URL: https://resend.com/blog/inbound-emails

Comments URL: https://news.ycombinator.com/item?id=45804970

Points: 4

# Comments: 0

New comment by lucasfcosta in "A brief history of random numbers (2018)"

lucasfcosta — Tue, 28 Oct 2025 15:01:24 +0000

This is what I come to HN for.

Resend Acquires Briefer

lucasfcosta — Tue, 05 Aug 2025 14:39:58 +0000

Article URL: https://resend.com/blog/resend-acquires-briefer

Comments URL: https://news.ycombinator.com/item?id=44798573

Points: 5

# Comments: 1

Confidence Intervals

lucasfcosta — Tue, 27 May 2025 14:13:28 +0000

Article URL: https://briefer.cloud/blog/posts/confidence-intervals/

Comments URL: https://news.ycombinator.com/item?id=44107224

Points: 7

# Comments: 0

New comment by lucasfcosta in "Find Your People"

lucasfcosta — Fri, 23 May 2025 19:30:56 +0000

Thanks for writing this, Jessica.

This is a great paragraph:

> If you want to, you can just decide to shift gears at this point, and no one's going to tell you you can't. You can just decide to be more curious, or more responsible, or more energetic, and no one's going to go look up your college grades and say, "Hey, wait a minute, this person's supposed to be a slacker."

I've often seen people get too attached to an unproductive "identity" instead of looking at things as they are. It's way too common for people to fail once and think they're a failure, rather than thinking that they just failed at that particular time.

By the way, I remember meeting you during the S23 batch and how genuinely excited you were to meet us, young founders who were just getting started. It does seem like you found your people!

New comment by lucasfcosta in "How linear regression works intuitively and how it leads to gradient descent"

lucasfcosta — Thu, 08 May 2025 15:44:33 +0000

Co-author and founder of Briefer here.

I used to use em dashes before they were cool. I actually learned about them when I emailed a guy who's a software engineer at Genius and also writes for The New Yorker and The Atlantic.

I asked him for tips on how to write well and he recommended that I read Steven Pinker's "The Sense of Style", which uses em dashes exhaustively, and explains when and why one should use them.

It also pains me that I can't use them anymore or else people will think an AI did the writing.

How linear regression works intuitively and how it leads to gradient descent

lucasfcosta — Mon, 05 May 2025 15:05:33 +0000

Article URL: https://briefer.cloud/blog/posts/least-squares/

Comments URL: https://news.ycombinator.com/item?id=43895890

Points: 334

# Comments: 101