cat about.md

about

I'm Douglas Kayama — Brazilian from Minas Gerais, influenced by Japanese, based in São Paulo, writing and thinking in English and português, and slowly absorbing more 日本語. This site is the cyborg hacker: the fast, neon, personal half of a two-mark identity. The other half, Café Linear, is the maker — the company work.

the short version

• Android, algorithms, AI & agents, security, and the occasional quantum rabbit hole.
• Competitive programming brain; I think in invariants and edge cases.
• Neurodivergent — AuDHD, and gifted (to balance the first combination) — and I write about it plainly, pairing the science with lived experience for a general audience. I am not a professional psychologist, nor a psychiatrist; anything I write here comes from my experience and never will be health advice. Each post on this topic will repeat this disclaimer.
• Craft: photography, coffee, stationery, knives, motorcycles, headphones, and far too many writing devices.
• Cyberpunk: I am a big fan of the genre — from the Sprawl Trilogy to Peripherals to Altered Carbon to Matrix to GURPS Cyberpunk to Shadowrun to Cyberpunk 2077, including the tabletop RPG Cyberpunk 2013, 2020, v3.0, and RED, to…

working habits

I've used Linux and Vim since 1999 — :wq is tattooed on my wrist. Notes live in Obsidian and are edited in Obsidian with Vim keybindings or in Vim itself; thinking happens in the margins. My machines are named after cyberpunk — the genre, not (only) the game — characters — Kusanagi Motoko, Judy Alvarez, Molly Millions, etc. I make noise with Strudel and Sonic Pi when the algorave mood strikes.

I live in a mix of analogue and digital tools. I am not a die-hard advocate for any of them, I choose the tool for the task. My tools augment me (hence a cyborg), not the opposite.

Programming languages are tools, not religion. C++ was my first language and it carries nostalgic value, but I code in C, Kotlin, Java, Python, R, LISP, Swift, Objective-C, JavaScript, etc.

Two human languages, uncountable programming languages, one prompt blinking in the dark. jack in.

This page is intentionally sparse. The /now page is what's true today; the blog is what I actually think.