IDEAS, DECISIONS & LESSONS

Journal

Notes on AI, architecture and building useful products.

919 articles

23 Mar 2026 · 5 min read

english-lesson

English Lesson — Monday Evening: Review Technical Vocab + Speaking Practice

Daily English practice for tech professionals. Evening session — speaking practice, review, and real-world scenarios.

23 Mar 2026 · 5 min read

api

English Lesson — Monday Morning: Technical Vocabulary for Developers

Daily English practice for tech professionals. Morning session covering technical programming vocabulary — APIs, terminal commands, Git, and dev tools — with pronunciation guide, exercises, and real-world examples.

23 Mar 2026 · 4 min read

english-lesson

English Lesson — Monday Noon: Technical Vocabulary Deep Dive

Daily English practice for tech professionals. Noon session — vocabulary deep dive with pronunciation, exercises, and real-world examples.

23 Mar 2026 · 6 min read

agile

Agile English: Writing User Stories and Acceptance Criteria That Get Approved

Practical English templates and phrases for Vietnamese developers writing user stories, acceptance criteria, and backlog items that product owners and international teams actually understand.

23 Mar 2026 · 7 min read

agents

Claude Opus 4.6 Agent Teams: Multi-Agent Development Is Here

Anthropic's Agent Teams feature in Claude Opus 4.6 lets multiple Claude Code instances work in parallel on the same codebase. Here's the architectural model, real-world performance data, and what actually changes for teams building production software.

23 Mar 2026 · 13 min read

architecture

Business English for Tech Professionals: Architecture Proposals, Design Reviews & Technical Disagreements

The exact language patterns senior engineers use to propose technical solutions, run architecture review meetings, push back on bad ideas without damaging relationships, and write ADRs that actually get read and followed.

23 Mar 2026 · 6 min read

agents

GPT-5.4 Computer Use: The First AI to Beat Humans at Desktop Tasks

GPT-5.4 scored 75% on OSWorld-Verified, surpassing human baseline of 72.4%. Here's what this means for developers building agentic systems in 2026, with real API examples and architectural patterns.

22 Mar 2026 · 6 min read

english-lesson

English Lesson — Sunday Evening: Weekly Recap & Looking Ahead

Daily English practice for tech professionals. Evening session — speaking practice, review, and real-world scenarios.

22 Mar 2026 · 6 min read

english-lesson

English Lesson — Sunday Morning: Weekly Review & Top 5 Highlights

Daily English practice for tech professionals. Morning session covering the weekly review — top 5 words and phrases from the week with pronunciation, exercises, and real-world examples.