Welcome to Ted’s Content Factory#

Everything published here—books, apps, and everything else—is content. I’ll keep adding new kinds of content over time.

About#

• I’m a software engineer currently building AI-powered applications, and I also run this “factory.”
• Profile: iamted.kim

Content#

• Books: Serialized and organized “books.” (Go to Books)
• Apps: Notes on apps I’ve personally built, launched, and operated. (Go to Apps)
• Widgets: Experimental tools / mini games built with just HTML and JavaScript. (Go to Widgets)
• Notes: General posts that don’t fit under Books/Apps (tech, life, opinions). (Go to Notes)
• News: Short curated briefings on AI and technology updates worth checking. (Go to News)

Latest Content

Cross Cube — An Unfolded Cube Puzzle

A 2D cube puzzle that unfolds the 3×3×3 cube into a cross. See all six faces at once — including the back — race the timer, and solve your first cube with the step-by-step beginner's guide.

Why Do Coding Agents All Design Alike? — Research and Decisions Behind Choosing a Design Stack

An essay on why web designs produced by coding agents look similar and slightly unpolished, surveying the skills, MCP servers, and harness guidelines that address this, and walking through the decisions that shaped an actual project's design stack.

Formula Calculator — A Calculator That Saves Your Own Formulas

Save the calculations you do often as reusable formulas (functions) and just swap in the values. Supports function composition, conditionals, and list aggregation, with button-only input, PC key mapping, and sound.

LLM Wiki, Opened Up — The 'Automatic Memory' Myth and a Schema That's Just a Few Lines

A record of actually applying Andrej Karpathy's LLM Wiki to my repository and what I learned. I correct the myth that it's 'automatic memory that updates itself,' show that the heart of the pattern is really 'a schema that's just a few lines,' and walk through how I brought it into my repository.

What Do Feature Flags Actually Solve? Single-Branch Collaboration and the Myth of Google-Style Trunk Development

An essay examining whether feature flags can fix the problems of having everyone push directly to a single shared branch. It lays out what feature flags actually solve, what they don't, and the real conditions that make Google-style trunk-based development work.

Piano Keyboard — A Keyboard You Play Like a Piano

A keyboard shaped like a piano. Type, and a song plays along. A 2011 Android app revived for the web. Hangul/Latin/symbol input with copy & save.

No Look Keyboard — Type Without Looking

A peculiar keyboard that picks letters with 8-direction gestures. A 2012 Android app revived for the web. Hangul/Latin/number/symbol input with copy & save.

TakeFive — Gomoku UFO Battle

A 10-stage mission Gomoku (Renju) game. Occupy five areas with your flying saucer. A 2014 Android app revived for the web.

I Thought AWS Bedrock Was Just Relaying Models — Turns Out It Runs Them Directly

A record of digging into how AWS Bedrock serves external LLMs like Claude and GPT. It is not a dedicated-line relay but direct hosting, with cryptographic sealing and zero operator access protecting the model assets.

Latest News