Silent failure: when your AI makes stuff up and tests say everything's fine

Yesterday I discovered that half of a module in my app was based on fabricated data. Not by a confused junior developer. By my AI. The worst part isn’t that it made things up. The worst part is that everything compiled and all 90 tests passed. The coherent fiction I’m building BFClaude-9000, a macOS menu bar app that monitors Claude Max quota. Part of the functionality requires distinguishing whether a Claude account is paid or free by calling the claude.ai API. ...

February 13, 2026 · Fernando

When Your AI Becomes Your Worst Enemy

Yesterday my AI sent 44 emails. The problem is that the content was fabricated. I’m not kidding. I had files with detailed feedback for each recipient, carefully generated. The task was simple: read each file and send it. Instead, the AI decided to “summarize” the content to “go faster.” It invented facts. It told one person they were missing docstrings when their code was perfectly documented. To top it off, four of those emails went to people who hadn’t even submitted anything. ...

February 6, 2026 · Fernando

Apple installed 84GB of jellyfish on my Mac. Duplicated.

Kimi K2 will have to wait Yesterday I wanted to download the latest Moonshot model, Kimi K2 Instruct. A pretty promising model that I’d been wanting to test for days. I went to make some space, checked the disk, and found this: Disk: 927GB Used: 644GB Free: 283GB Hmm. 283GB free isn’t bad, but what the hell is taking up 644GB? I keep my Mac pretty clean, don’t store movies locally, and use the cloud for almost everything. ...

January 29, 2026 · Fernando

Your Brain Was Already Using AI Algorithms Before AI Even Existed

Two Predictions About You I’m going to go out on a limb with two predictions: Your professional success is largely due to an algorithm you master without knowing it. You’re worried that your kids apparently don’t use it. The first one is correct. The second… well, it might not be the problem you think it is. The algorithms are called Breadth First Search (BFS) and Depth First Search (DFS). Even if they don’t ring a bell, I guarantee they’re old friends. Your brain has been using them for millions of years. ...

January 28, 2026 · Fernando

Claude Code Native Build: 100MB Binary to Ditch Node for Good

A 100-Megabyte Binary for a CLI Anthropic just announced that Claude Code is now available as a native build. Translation: a binary executable you can install with a curl command that doesn’t need Node.js. Sounds good, right? One command, no dependencies, background auto-updates. Any CLI tool’s dream. But there’s a catch: the binary weighs 100MB. To put this in perspective, the git binary weighs about 3MB. curl is less than 1MB. Even Go, which has a reputation for generating fat binaries, rarely exceeds 15-20MB. ...

January 27, 2026 · Fernando

The Half-Life of Your Skills Is 2 Years (And Dropping)

The Layoff He Didn’t See Coming A 38-year-old senior developer. Eight years at the company. Clean code, best practices, zero production incidents. In his last performance review, his output was 40% lower than colleagues with half his experience. The difference: they used Copilot, Cursor, and Claude Code. He kept writing every line by hand, convinced that “AI tools generate mediocre code.” He wasn’t fired for writing bad code. He was fired for writing good code too slowly. ...

January 27, 2026 · Fernando

Clawdbot: The open-source AI assistant that's revolutionizing (and worrying) half the internet

A space lobster on your computer Picture this: an Austrian developer creates a personal AI assistant, names it after a space lobster, and decides to open-source it. Within 24 hours it has 9,000 GitHub stars. Within 48 hours, 17,000. It also has 300+ open issues, several critical security vulnerabilities, and someone created an unofficial cryptocurrency with its name. Welcome to Clawdbot. What exactly is this thing? Clawdbot is an open-source AI assistant that runs locally on your machine. The difference from other assistants: it doesn’t just answer questions, it does things. ...

January 26, 2026 · Fernando