Thought occurred to me to throw this at ChatGPT 5.2:
Given the article at https://addyosmani.com/blog/21-lessons/, find a short list of points which summarizes and touches on all of his lessons
Answer:
Here’s a short “umbrella list” that still covers all 21 lessons (each bullet is doing a lot of work on purpose):
- Start with the user, not the toy. Get unreasonably concrete about real user pain (tickets, observation, “why” drills), and let solutions fall out of that—otherwise you’ll build complexity to justify a preconceived answer.
- Engineering is a team sport: alignment beats being right. The job is getting to “right” together: create shared understanding, reduce misalignment (the real cause of “slow” teams), avoid “winning” debates into silent resistance, use metrics carefully (they get gamed), and design process to reduce uncertainty rather than produce paperwork.
- Ship early, then iterate—clarity over cleverness. Bias to action: drafts and MVPs teach faster than armchair perfection. Write code and docs that are obvious at 2am during an incident, not “impressive.” And treat novelty as debt you repay in ops/hiring/cognitive overhead—spend your “innovation tokens” where you’re uniquely paid to innovate.
- Do less: deletion is a superpower (and often the fastest optimization). Prefer “code you never wrote” (or work you removed) over clever additions. Many performance wins come from removing unnecessary computation, not adding fancy machinery.
- Respect scale and failure: compatibility, migrations, and leaky abstractions are the real product. At scale, even bugs become dependencies; deprecations are migrations with empathy/tooling/time. Abstractions don’t erase complexity—they postpone it until on-call—so keep a working mental model of what’s underneath.
- Make your impact legible and invest in compounding. Code doesn’t advocate for you—people do—so communicate outcomes, not just activity. Use writing/teaching to force clarity and deepen your own understanding; treat “glue work” as deliberate, bounded, and visible. Build psychological safety by saying “I don’t know.” Maintain relationships because your network outlasts any job. And manage your career like compound interest: protect time, practice deliberately, turn scar tissue into reusable playbooks.
