Table of Contents
Artificial Intelligence Translates the Language of Animals
Kim Kyung-jin, Attorney at Law
The Story of AI Learning to Listen to Whales, Dolphins, Birds, and Bees
Twelve chapters on how AI listens to dolphins, sperm whales, humpback whales, birds, and bees to find rules in their sounds, and what this technology means for its risks and for animal rights. Written in simple sentences a child can read, with verified sources in every section.
Table of Contents
AI Deciphers Ancient Scripts
Kim Kyung-jin, Attorney at Law
Ancient Records Revived by AI
In twelve chapters, this book explains how AI revives records once unreadable, from burned scrolls and wooden slips buried in mud to broken clay tablets. It covers virtual unrolling at Herculaneum, virtual collation of oracle-bone texts, reading Silla wooden tablets, computational analysis of undeciphered scripts, and multispectral archives, with verified references for each chapter.
Table of Contents
Artificial Intelligence for New Materials Design and Rocket Propulsion Engineering
Kim Kyung-jin, Attorney at Law
AI Potentials, Self-Driving Laboratories, and Physics-Informed Machine Learning (PIML)
Ten chapters on how artificial intelligence is changing new materials and rocket propulsion: atomic simulation, generative models, self-driving labs, high-temperature alloys, metal 3D printing, combustion, cooling design, and engine diagnosis and control. Written without equations, with verified sources in every chapter.
AI Library
The Age of Autonomous Scientific Discovery
Kim Kyung-jin, Attorney at Law
AI Scientists and Self-Driving Labs
This book follows how AI scientists and self-driving labs are changing the way science generates and verifies claims. It covers literature-based discovery, natural-language protocols translated into robot commands, multi-agent research systems, closed-loop laboratories, materials search, the verification gap, chains of evidence, research harnesses, journal ethics, and legal responsibility.
AI Library
A New Era of Life Sciences Opened by Artificial Intelligence
Structural Proteomics, Genomic Foundation Models, Autonomous Laboratories, and Global Governance
Kim Kyung-jin, Attorney at Law
This book is a research volume compiled with artificial intelligence. A human selected the materials and structured the work, while AI models drafted the sentences and cross-checked the facts.
AI Library
The Double Structure of Digital Sovereignty
Europe’s Departure from Palantir and the Chains of American Big Tech
Kim Kyung-jin, Attorney at Law
This is a record of 2026, when European intelligence agencies and defense ministries began removing analytics tools from America’s Palantir. It covers the replacement decisions made by France’s General Directorate for Internal Security (DGSI), Germany’s Federal Office for the Protection of the Constitution (BfV), and the Netherlands Ministry of Defense; the incident in which US export controls severed an ally’s ac…
New English Edition
Artificial Intelligence in Horticulture
Kim Kyung-jin, Attorney at Law
Across five chapters and ten sections, this book examines computer vision for crop diagnosis, harvesting robots and autonomous field systems, smart greenhouses and digital twins, precision irrigation and supply-chain quality control, high-throughput phenotyping, and predictive breeding.
New English Edition
Artificial Intelligence in Food Crop Agriculture
Kim Kyung-jin, Attorney at Law
Across six chapters and eighteen sections, the book examines digital agricultural infrastructure, remote sensing, crop diagnosis, yield forecasting, precision irrigation, genomics, molecular breeding, agricultural robotics, climate-smart agriculture, and global food security.
New English Edition
The Future of Forestry and Agroforestry
Kim Kyung-jin, Attorney at Law
Driven by Artificial Intelligence and Digital Innovation
Across five chapters and fifteen sections, the book follows satellites, drones, LiDAR, digital twins, forest-specific language models, wildfire and pest forecasting, forestry robotics, agroforestry, timber traceability, and forest carbon markets.
New English Edition
Smart Livestock Farming: AI Enters the Barn
Kim Kyung-jin, Attorney at Law
Sensors listen, cameras watch, and artificial intelligence helps farmers decide.
Across five chapters and fifteen sections, the book follows precision livestock farming from animal health and reproduction to robotic milking, virtual fencing, digital twins, methane reduction, welfare, and data ownership.
Table of Contents
Han Dong-hoon, Busan Buk-gu Gap: A Record of the 100 Days Before and After the Election (Mar. 26-Jul. 3, 2026)
Kim Kyung-jin
Table of Contents and 13 sections
From March 26 to July 3, 2026, this record follows the spring after expulsion, the Busan Buk-gu Gap by-election, victory as an independent, and the first bill submitted in the National Assembly.
Table of Contents
Artificial Intelligence and Medicine
Kim Kyung-jin, Attorney at Law
AI in clinical care, hospitals, education, and research
AI in medical imaging, risk prediction, treatment planning, hospital operations, education, and research, with patient safety, privacy, and accountability.
[AI Library] Chapter 5. Claude Code and Codex: What Is Different?
Leaving It to AI and Stepping Away - A Complete Beginner's Guide to YOLO Mode
Chapter 5. Claude Code and Codex: What Is Different?
Kim Kyung-jin
Let's compare the two tools.
Claude Code was made by Anthropic. Codex was made by OpenAI. Both are AI tools that run in the terminal, and both create files and execute code directly on your computer. Their capabilities are similar, but the companies behind them differ, the commands differ, and the names of their safety features differ.
First, let's go over installation. Both tools require a program called Node.js to be installed. Node.js is what runs the JavaScript programming language, but all you need to know is the installation process. You don't need to understand how it works under the hood.
Here's how to install Node.js. On a Mac, open the terminal and enter the following command.
brew install node
(brew install node)
brew is a Mac program installer called Homebrew. It works similarly to the App Store, but operates in the terminal. If you don't have Homebrew yet, you'll need to install it first. Just follow the instructions on the Homebrew website (brew.sh).
On Windows, go to nodejs.org, download the installer, and double-click it to install. "Next, Next, Finish." It's the same as installing any ordinary program.
Once Node.js is installed, install Claude Code. Type this into the terminal.
npm install -g @anthropic-ai/claude-code
(npm install -g @anthropic-ai/claude-code)
npm is the package installer that comes bundled with Node.js. install means "install this," and -g means "make it available from anywhere on the computer." That single command is all it takes to install Claude Code.
Installing Codex is similar.
npm install -g @openai/codex
(npm install -g @openai/codex)
Now let's lay out the differences between the two tools.
The commands are different. To launch Claude Code, type claude in the terminal. To launch Codex, type codex.
The safety feature names are different. Claude Code's YOLO mode flag is --dangerously-skip-permissions. Codex's YOLO mode flag is --yolo. The function is identical. Only the names differ.
The default models are different. Claude Code uses Claude models. As of May 2026, the default is Claude Opus 4.7. Codex uses GPT-series models. The default is GPT-5.5.
The pricing structures are similar for both. Claude Code can be used within the usage included in an Anthropic subscription (Claude Pro, Max, or Team), and it can also be used on a pay-as-you-go API basis without a subscription. Codex works the same way: it has usage included in an OpenAI subscription (ChatGPT Pro) and is also available via pay-as-you-go API. Either way, if you already have a subscription, you can get started without any extra cost.
Which one you use depends on your situation. If you're already paying for ChatGPT, Codex is the natural fit. If you're already paying for Claude, Claude Code is the natural fit. If you're using neither, both offer free trials, so just pick one and start. The two tools work in much the same way, so once you learn one, switching to the other isn't difficult.
One more thing worth mentioning: both tools exist in forms other than the terminal version. Claude Code can be used as an extension for the code editor VS Code, and similar functionality is available in the Claude Desktop app. Codex has a version that runs inside the ChatGPT website. That said, to use YOLO mode — the fully automated mode where AI manipulates files directly on your computer — you need the terminal version. That's why this book focuses on the terminal version.
Kim Kyung-jin
Lawyer · Former Member of the National Assembly · AI Policy Researcher
© 2026 Kim Kyung-jin. All rights reserved.