Esse é nosso principal desafio. educacao.uol.com.br/noticias…

you don't hate math. you just never saw it like this.

wieldTheSword

Your perspective can either be your prison or your passport.” — Unknown

Elon Musk was asked by an interviewer what he does when he makes a wrong decision. He said he doesn't make decisions based on being right. He makes decisions based on expected value. Which means he expects to be wrong frequently. He said if you're not wrong at least 30% of the time you're not making enough decisions. He described SpaceX's approach to rocket design. Instead of spending years perfecting a design on paper and then building it, they build it fast, launch it, watch it explode, and use the explosion as data for the next version. The explosions aren't failures. They're the fastest way to generate the information needed for success. He said most companies fail not because they make bad decisions but because they make too few decisions. They spend so long trying to be right that the opportunity passes. A wrong decision made quickly generates data. A delayed decision generates nothing. Then he said the part that made the interviewer go quiet. He said the biggest mistakes of his career weren't the times he was wrong. They were the times he was right but too slow. The times he knew the answer and waited for more confirmation before acting. The delay cost more than any wrong answer ever did. The world sees Elon as a risk taker. He sees himself as someone who moves fast enough that the cost of being wrong is always lower than the cost of being slow. That's not the same thing as courage. It's math.

“I gave a problem to all of my 8 children, I said: “Well there’s a sport in America, and the national champion became the national champion on 2 separate occasions, 65 years apart. Name the activity.” “7 of them couldn’t remotely do it. The 8th is a PhD physicist and he did it in 15 seconds.” “He said, no 85 year old would win athletic thing, also it couldn’t be chess because he knew what a chess tournament is like.” “That led him to Checkers, a game you can almost master with experience. So almost all problems in life can be solved when you turn them around. Inversion helps.” - Charlie Munger

This is what entrepreneurialism feels like. nitter.net/tannokasa9/status/2079…

The new development cycle in one image.

theIdealCandidate

Marcus Aurelius wrote this over 1800 years ago: “Be satisfied with even the smallest progress.”

Employee: 2k, 2k, 2k, 2k, 2k Freelancer: 800, 3k, 0, 6k, 1k, 4k Founder: 0, 0, 0, 0, 0, 0, 300k Open Source Maintainer: 0, 0, 0, 0, "thanks bro"

Day 1 of vibecoding

A Danish engineer dropped out of university in 1979, wrote a Pascal compiler so fast it made Borland a hundred-million-dollar company, then built the language that became the backbone of Microsoft's entire software ecosystem, then built TypeScript, which became the number one language on GitHub in 2025 and most developers who use his work every day have never heard his name. His name is Anders Hejlsberg. He was born in Copenhagen in 1960, started studying engineering at the Technical University of Denmark in 1979, and left before finishing his degree because he was already building something more interesting than anything his courses could offer. He had access to a minicomputer at his high school, one of the first in Denmark to have one. He taught himself machine code, Algol, and Pascal. By the time he was supposed to be finishing his degree, he had already written a Pascal compiler from scratch for the Nascom-2 microcomputer. He released it under the name Blue Label Pascal. A small Danish software company called PolyData picked it up. Borland, the American developer tools company, found it and saw immediately what they had. They licensed the compiler, brought Hejlsberg to California, and in November 1983 released it as Turbo Pascal. The price was $49.95. At the time, most Pascal compilers cost hundreds of dollars and ran slowly. Turbo Pascal was cheap and compiled code so fast that developers could not believe it was real. One reviewer read the speed claims on the box, assumed they were marketing fiction, tested it, and then wrote that he had never seen anything like it. The product sold over one million copies. Borland became a serious company almost overnight, and Hejlsberg was the reason. He kept building. He became chief architect of Delphi in 1995, Borland's rapid application development environment built on Object Pascal. Delphi let Windows developers build full graphical applications faster than anything else available. It dominated enterprise Windows development through the mid-1990s. Teams that used it could ship in weeks what their competitors took months to build. Microsoft noticed. In 1996 they made him an offer. He left Borland and joined Microsoft, and the project they handed him was the one that would define the next decade of enterprise software. He designed C#. Released in 2000 alongside the .NET Framework, C# was built to be modern in ways Java was not. Clean object orientation. Garbage collection. Strong typing. A syntax familiar enough that Java and C++ developers could pick it up quickly but designed without the legacy decisions those languages had accumulated over decades. Hejlsberg later said one of his goals was to make the language feel inevitable, as if every decision was the only sensible one. It worked. C# became the primary language of Microsoft's entire development platform. It powers enterprise applications, game development through Unity, cloud services on Azure, and Windows applications across hundreds of millions of machines. Around 6.2 million developers write C# professionally today. Then he did it again. By 2010, JavaScript had become unavoidable. Every web application ran on it. But JavaScript had been designed in ten days in 1995 for simple browser scripting, not for building complex systems with large teams. As codebases grew to hundreds of thousands of lines, the lack of a type system meant bugs that a compiler would have caught in any other language were only discovered in production. Hejlsberg saw the problem clearly and spent two years designing a solution. TypeScript launched in 2012 as an open-source typed superset of JavaScript. You write TypeScript, and it compiles down to plain JavaScript. The type system catches errors before the code runs. Large teams can work on the same codebase without breaking each other's code. Every major JavaScript framework adopted it. Google, Airbnb, Slack, and Microsoft all moved their codebases to TypeScript. In August 2025, TypeScript overtook Python and JavaScript to become the number one language on GitHub by monthly contributors. He is 65 years old. He is still at Microsoft as a Technical Fellow. He is still working on TypeScript. Four languages. Four decades. Turbo Pascal made developer tools affordable and fast. Delphi made Windows application development accessible. C# became the backbone of enterprise software. TypeScript became the dominant language of the modern web. Most of the developers using his work right now are too young to know what Turbo Pascal was. They learned to code in languages that borrowed from C#. They write TypeScript every day without knowing who designed it. He dropped out of university in 1979 to build a compiler. He has not stopped since.

How we browsed the internet in 2000

Write your Own Virtual Machine teaches you to build a VM that runs actual assembly programs, like a working 2048 or roguelike. the final code is ~250 lines of C and runs on the LC-3 architecture

A developer in China named tw93 got tired of his laptop dying. He would open Slack and watch 524 megabytes of disk space disappear. He would open Discord and watch another 265. He would open Notion and watch 800 megabytes of RAM evaporate before he had typed a single word. He looked into why. Every "desktop app" on his computer was the same thing. A website wrapped in a full copy of the Chrome browser engine. The framework is called Electron. An empty Electron app starts at 150 megabytes of RAM before you click anything. With twelve of them open, his laptop was running twelve copies of the same browser. He thought there had to be a better way. So in 2022, he started building one. He called it Pake. Two characters in Chinese mean "packaging." He wrote it in Rust on top of a framework called Tauri. The idea was simple. Point Pake at any webpage. Get a desktop app. Without dragging an entire browser engine into the binary. The first version of Slack he wrapped with it was 8 megabytes. Not 524. Eight. That is what 20 times smaller looks like. Four years later, his repo has 50,594 stars. 6,144 forks. The license is MIT. The last commit was yesterday. The bio on his GitHub reads: "Anything added dilutes everything else." Today the Pake releases page contains pre-built apps for ChatGPT, Discord, Gemini, Grok, DeepSeek, Twitter, YouTube, Excalidraw, Flomo, WeChat, and twelve more. All under 10 megabytes. All native. All free. Or you point Pake at any URL you want and it builds one for you in one command. Slack's desktop app: 524 megabytes. Pake-built Slack: 8 megabytes. Discord's desktop app: 265 megabytes. Pake-built Discord: 9 megabytes. ChatGPT for Windows: 260 megabytes. Pake-built ChatGPT: 9 megabytes. tw93 is one person. He has 11,305 followers on GitHub. He runs a blog at tw93.fun. He has shipped 39 public repos. He still pushes commits to Pake every week. He did not start a company. He did not raise money. He did not write a Medium post about how Electron is dead. He just shipped the thing that made it true. (Link in the comments)

IN 1986 MIT FILMED A LECTURE THAT OPENS BY TELLING YOU COMPUTER SCIENCE IS NOT A SCIENCE AND HAS ALMOST NOTHING TO DO WITH COMPUTERS 72 minutes from Hal Abelson and Gerald Sussman, the lecture an entire generation of engineers calls the one that rewired how they think. -> The line that lands: computer science is about computers the way astronomy is about telescopes. The tool was never the point. The real subject was always one thing -- controlling complexity. Everything else is detail. Forty years later it reads like a prophecy. AI writes the syntax now. What's left is exactly what they taught: taming complexity nobody can hold in their head. The language was never the skill -> the thinking was. This is where you learn it. Most people chase the newest framework. The ones who watched this think on a level frameworks can't touch. Bookmark & Watch today it, this one's a legend ↓

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